--- old/usr/src/lib/libntfs/common/libntfs/dir.c	2014-07-17 16:13:42.235854213 +0200
+++ /dev/null	2014-07-17 16:13:42.000000000 +0200
@@ -1,1773 +0,0 @@
-/**
- * dir.c - Directory handling code. Part of the Linux-NTFS project.
- *
- * Copyright (c) 2002-2005 Anton Altaparmakov
- * Copyright (c) 2005-2007 Yura Pakhuchiy
- * Copyright (c) 2004-2005 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
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-
-#ifdef HAVE_SYS_SYSMACROS_H
-#include <sys/sysmacros.h>
-#endif
-
-#include "compat.h"
-#include "types.h"
-#include "debug.h"
-#include "attrib.h"
-#include "inode.h"
-#include "dir.h"
-#include "volume.h"
-#include "mft.h"
-#include "index.h"
-#include "ntfstime.h"
-#include "lcnalloc.h"
-#include "logging.h"
-
-/*
- * The little endian Unicode strings "$I30", "$SII", "$SDH", "$O"
- *  and "$Q" as global constants.
- */
-ntfschar NTFS_INDEX_I30[5] = { const_cpu_to_le16('$'), const_cpu_to_le16('I'),
-		const_cpu_to_le16('3'), const_cpu_to_le16('0'),
-		const_cpu_to_le16('\0') };
-ntfschar NTFS_INDEX_SII[5] = { const_cpu_to_le16('$'), const_cpu_to_le16('S'),
-		const_cpu_to_le16('I'), const_cpu_to_le16('I'),
-		const_cpu_to_le16('\0') };
-ntfschar NTFS_INDEX_SDH[5] = { const_cpu_to_le16('$'), const_cpu_to_le16('S'),
-		const_cpu_to_le16('D'), const_cpu_to_le16('H'),
-		const_cpu_to_le16('\0') };
-ntfschar NTFS_INDEX_O[3] = { const_cpu_to_le16('$'), const_cpu_to_le16('O'),
-		const_cpu_to_le16('\0') };
-ntfschar NTFS_INDEX_Q[3] = { const_cpu_to_le16('$'), const_cpu_to_le16('Q'),
-		const_cpu_to_le16('\0') };
-ntfschar NTFS_INDEX_R[3] = { const_cpu_to_le16('$'), const_cpu_to_le16('R'),
-		const_cpu_to_le16('\0') };
-
-/**
- * ntfs_inode_lookup_by_name - find an inode in a directory given its name
- * @dir_ni:	ntfs inode of the directory in which to search for the name
- * @uname:	Unicode name for which to search in the directory
- * @uname_len:	length of the name @uname in Unicode characters
- *
- * Look for an inode with name @uname in the directory with inode @dir_ni.
- * ntfs_inode_lookup_by_name() walks the contents of the directory looking for
- * the Unicode name. If the name is found in the directory, the corresponding
- * inode number (>= 0) is returned as a mft reference in cpu format, i.e. it
- * is a 64-bit number containing the sequence number.
- *
- * On error, return -1 with errno set to the error code. If the inode is is not
- * found errno is ENOENT.
- *
- * Note, @uname_len does not include the (optional) terminating NULL character.
- *
- * Note, we look for a case sensitive match first but we also look for a case
- * insensitive match at the same time. If we find a case insensitive match, we
- * save that for the case that we don't find an exact match, where we return
- * the mft reference of the case insensitive match.
- *
- * If the volume is mounted with the case sensitive flag set, then we only
- * allow exact matches.
- */
-u64 ntfs_inode_lookup_by_name(ntfs_inode *dir_ni, const ntfschar *uname,
-		const int uname_len)
-{
-	VCN vcn;
-	u64 mref = 0;
-	s64 br;
-	ntfs_volume *vol = dir_ni->vol;
-	ntfs_attr_search_ctx *ctx;
-	INDEX_ROOT *ir;
-	INDEX_ENTRY *ie;
-	INDEX_ALLOCATION *ia;
-	u8 *index_end;
-	ntfs_attr *ia_na;
-	int eo, rc;
-	u32 index_block_size, index_vcn_size;
-	u8 index_vcn_size_bits;
-
-	if (!dir_ni || !dir_ni->mrec || !uname || uname_len <= 0) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	ctx = ntfs_attr_get_search_ctx(dir_ni, NULL);
-	if (!ctx)
-		return -1;
-
-	/* Find the index root attribute in the mft record. */
-	if (ntfs_attr_lookup(AT_INDEX_ROOT, NTFS_INDEX_I30, 4, CASE_SENSITIVE,
-				0, NULL, 0, ctx)) {
-		ntfs_log_perror("Index root attribute missing in directory "
-				"inode 0x%llx", (unsigned long long)dir_ni->
-				mft_no);
-		goto put_err_out;
-	}
-	/* Get to the index root value. */
-	ir = (INDEX_ROOT*)((u8*)ctx->attr +
-			le16_to_cpu(ctx->attr->u.res.value_offset));
-	index_block_size = le32_to_cpu(ir->index_block_size);
-	if (index_block_size < NTFS_BLOCK_SIZE ||
-			index_block_size & (index_block_size - 1)) {
-		ntfs_log_debug("Index block size %u is invalid.\n",
-				(unsigned)index_block_size);
-		goto put_err_out;
-	}
-	index_end = (u8*)&ir->index + le32_to_cpu(ir->index.index_length);
-	/* The first index entry. */
-	ie = (INDEX_ENTRY*)((u8*)&ir->index +
-			le32_to_cpu(ir->index.entries_offset));
-	/*
-	 * Loop until we exceed valid memory (corruption case) or until we
-	 * reach the last entry.
-	 */
-	for (;; ie = (INDEX_ENTRY*)((u8*)ie + le16_to_cpu(ie->length))) {
-		/* Bounds checks. */
-		if ((u8*)ie < (u8*)ctx->mrec || (u8*)ie +
-				sizeof(INDEX_ENTRY_HEADER) > index_end ||
-				(u8*)ie + le16_to_cpu(ie->key_length) >
-				index_end)
-			goto put_err_out;
-		/*
-		 * The last entry cannot contain a name. It can however contain
-		 * a pointer to a child node in the B+tree so we just break out.
-		 */
-		if (ie->flags & INDEX_ENTRY_END)
-			break;
-		/*
-		 * We perform a case sensitive comparison and if that matches
-		 * we are done and return the mft reference of the inode (i.e.
-		 * the inode number together with the sequence number for
-		 * consistency checking). We convert it to cpu format before
-		 * returning.
-		 */
-		if (ntfs_names_are_equal(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length,
-				CASE_SENSITIVE, vol->upcase, vol->upcase_len)) {
-found_it:
-			/*
-			 * We have a perfect match, so we don't need to care
-			 * about having matched imperfectly before.
-			 */
-			mref = le64_to_cpu(ie->u.indexed_file);
-			ntfs_attr_put_search_ctx(ctx);
-			return mref;
-		}
-		/*
-		 * For a case insensitive mount, we also perform a case
-		 * insensitive comparison. If the comparison matches, we cache
-		 * the mft reference in mref. Use first case insensitive match
-		 * in case if no name matches case sensitive, but several names
-		 * matches case insensitive.
-		 */
-		if (!mref && !NVolCaseSensitive(vol) &&
-				ntfs_names_are_equal(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length,
-				IGNORE_CASE, vol->upcase, vol->upcase_len))
-			mref = le64_to_cpu(ie->u.indexed_file);
-		/*
-		 * Not a perfect match, need to do full blown collation so we
-		 * know which way in the B+tree we have to go.
-		 */
-		rc = ntfs_names_collate(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length, 1,
-				IGNORE_CASE, vol->upcase, vol->upcase_len);
-		/*
-		 * If uname collates before the name of the current entry, there
-		 * is definitely no such name in this index but we might need to
-		 * descend into the B+tree so we just break out of the loop.
-		 */
-		if (rc == -1)
-			break;
-		/* The names are not equal, continue the search. */
-		if (rc)
-			continue;
-		/*
-		 * Names match with case insensitive comparison, now try the
-		 * case sensitive comparison, which is required for proper
-		 * collation.
-		 */
-		rc = ntfs_names_collate(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length, 1,
-				CASE_SENSITIVE, vol->upcase, vol->upcase_len);
-		if (rc == -1)
-			break;
-		if (rc)
-			continue;
-		/*
-		 * Perfect match, this will never happen as the
-		 * ntfs_are_names_equal() call will have gotten a match but we
-		 * still treat it correctly.
-		 */
-		goto found_it;
-	}
-	/*
-	 * We have finished with this index without success. Check for the
-	 * presence of a child node and if not present return error code
-	 * ENOENT, unless we have got the mft reference of a matching name
-	 * cached in mref in which case return mref.
-	 */
-	if (!(ie->flags & INDEX_ENTRY_NODE)) {
-		ntfs_attr_put_search_ctx(ctx);
-		if (mref)
-			return mref;
-		ntfs_log_debug("Entry not found.\n");
-		errno = ENOENT;
-		return -1;
-	} /* Child node present, descend into it. */
-
-	/* Open the index allocation attribute. */
-	ia_na = ntfs_attr_open(dir_ni, AT_INDEX_ALLOCATION, NTFS_INDEX_I30, 4);
-	if (!ia_na) {
-		ntfs_log_perror("Failed to open index allocation attribute. "
-				"Directory inode 0x%llx is corrupt or driver "
-				"bug", (unsigned long long)dir_ni->mft_no);
-		goto put_err_out;
-	}
-
-	/* Allocate a buffer for the current index block. */
-	ia = (INDEX_ALLOCATION*)malloc(index_block_size);
-	if (!ia) {
-		ntfs_log_perror("Failed to allocate buffer for index block");
-		ntfs_attr_close(ia_na);
-		goto put_err_out;
-	}
-
-	/* Determine the size of a vcn in the directory index. */
-	if (vol->cluster_size <= index_block_size) {
-		index_vcn_size = vol->cluster_size;
-		index_vcn_size_bits = vol->cluster_size_bits;
-	} else {
-		index_vcn_size = vol->sector_size;
-		index_vcn_size_bits = vol->sector_size_bits;
-	}
-
-	/* Get the starting vcn of the index_block holding the child node. */
-	vcn = sle64_to_cpup((u8*)ie + le16_to_cpu(ie->length) - 8);
-
-descend_into_child_node:
-
-	/* Read the index block starting at vcn. */
-	br = ntfs_attr_mst_pread(ia_na, vcn << index_vcn_size_bits, 1,
-			index_block_size, ia);
-	if (br != 1) {
-		if (br != -1)
-			errno = EIO;
-		ntfs_log_perror("Failed to read vcn 0x%llx",
-			       	(unsigned long long)vcn);
-		goto close_err_out;
-	}
-
-	if (sle64_to_cpu(ia->index_block_vcn) != vcn) {
-		ntfs_log_debug("Actual VCN (0x%llx) of index buffer is "
-				"different from expected VCN (0x%llx).\n",
-				(long long)sle64_to_cpu(ia->index_block_vcn),
-				(long long)vcn);
-		errno = EIO;
-		goto close_err_out;
-	}
-	if (le32_to_cpu(ia->index.allocated_size) + 0x18 != index_block_size) {
-		ntfs_log_debug("Index buffer (VCN 0x%llx) of directory inode "
-				"0x%llx has a size (%u) differing from the "
-				"directory specified size (%u).\n",
-				(long long)vcn, (unsigned long long)dir_ni->
-				mft_no, (unsigned)le32_to_cpu(ia->index.
-				allocated_size) + 0x18, (unsigned)
-				index_block_size);
-		errno = EIO;
-		goto close_err_out;
-	}
-	index_end = (u8*)&ia->index + le32_to_cpu(ia->index.index_length);
-	if (index_end > (u8*)ia + index_block_size) {
-		ntfs_log_debug("Size of index buffer (VCN 0x%llx) of directory "
-				"inode 0x%llx exceeds maximum size.\n",
-				(long long)vcn, (unsigned long long)dir_ni->
-				mft_no);
-		errno = EIO;
-		goto close_err_out;
-	}
-
-	/* The first index entry. */
-	ie = (INDEX_ENTRY*)((u8*)&ia->index +
-			le32_to_cpu(ia->index.entries_offset));
-	/*
-	 * Iterate similar to above big loop but applied to index buffer, thus
-	 * loop until we exceed valid memory (corruption case) or until we
-	 * reach the last entry.
-	 */
-	for (;; ie = (INDEX_ENTRY*)((u8*)ie + le16_to_cpu(ie->length))) {
-		/* Bounds check. */
-		if ((u8*)ie < (u8*)ia || (u8*)ie +
-				sizeof(INDEX_ENTRY_HEADER) > index_end ||
-				(u8*)ie + le16_to_cpu(ie->key_length) >
-				index_end) {
-			ntfs_log_debug("Index entry out of bounds in directory "
-					"inode 0x%llx.\n",
-					(unsigned long long)dir_ni->mft_no);
-			errno = EIO;
-			goto close_err_out;
-		}
-		/*
-		 * The last entry cannot contain a name. It can however contain
-		 * a pointer to a child node in the B+tree so we just break out.
-		 */
-		if (ie->flags & INDEX_ENTRY_END)
-			break;
-		/*
-		 * We perform a case sensitive comparison and if that matches
-		 * we are done and return the mft reference of the inode (i.e.
-		 * the inode number together with the sequence number for
-		 * consistency checking). We convert it to cpu format before
-		 * returning.
-		 */
-		if (ntfs_names_are_equal(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length,
-				CASE_SENSITIVE, vol->upcase, vol->upcase_len)) {
-found_it2:
-			/*
-			 * We have a perfect match, so we don't need to care
-			 * about having matched imperfectly before.
-			 */
-			mref = le64_to_cpu(ie->u.indexed_file);
-			free(ia);
-			ntfs_attr_close(ia_na);
-			ntfs_attr_put_search_ctx(ctx);
-			return mref;
-		}
-		/*
-		 * For a case insensitive mount, we also perform a case
-		 * insensitive comparison. If the comparison matches, we cache
-		 * the mft reference in mref. Use first case insensitive match
-		 * in case if no name matches case sensitive, but several names
-		 * matches case insensitive.
-		 */
-		if (!mref && !NVolCaseSensitive(vol) &&
-				ntfs_names_are_equal(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length,
-				IGNORE_CASE, vol->upcase, vol->upcase_len))
-			mref = le64_to_cpu(ie->u.indexed_file);
-		/*
-		 * Not a perfect match, need to do full blown collation so we
-		 * know which way in the B+tree we have to go.
-		 */
-		rc = ntfs_names_collate(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length, 1,
-				IGNORE_CASE, vol->upcase, vol->upcase_len);
-		/*
-		 * If uname collates before the name of the current entry, there
-		 * is definitely no such name in this index but we might need to
-		 * descend into the B+tree so we just break out of the loop.
-		 */
-		if (rc == -1)
-			break;
-		/* The names are not equal, continue the search. */
-		if (rc)
-			continue;
-		/*
-		 * Names match with case insensitive comparison, now try the
-		 * case sensitive comparison, which is required for proper
-		 * collation.
-		 */
-		rc = ntfs_names_collate(uname, uname_len,
-				(ntfschar*)&ie->key.file_name.file_name,
-				ie->key.file_name.file_name_length, 1,
-				CASE_SENSITIVE, vol->upcase, vol->upcase_len);
-		if (rc == -1)
-			break;
-		if (rc)
-			continue;
-		/*
-		 * Perfect match, this will never happen as the
-		 * ntfs_are_names_equal() call will have gotten a match but we
-		 * still treat it correctly.
-		 */
-		goto found_it2;
-	}
-	/*
-	 * We have finished with this index buffer without success. Check for
-	 * the presence of a child node.
-	 */
-	if (ie->flags & INDEX_ENTRY_NODE) {
-		if ((ia->index.flags & NODE_MASK) == LEAF_NODE) {
-			ntfs_log_debug("Index entry with child node found in a "
-					"leaf node in directory inode "
-					"0x%llx.\n",
-					(unsigned long long)dir_ni->mft_no);
-			errno = EIO;
-			goto close_err_out;
-		}
-		/* Child node present, descend into it. */
-		vcn = sle64_to_cpup((u8*)ie + le16_to_cpu(ie->length) - 8);
-		if (vcn >= 0)
-			goto descend_into_child_node;
-		ntfs_log_debug("Negative child node vcn in directory inode "
-				"0x%llx.\n", (unsigned long long)dir_ni->
-				mft_no);
-		errno = EIO;
-		goto close_err_out;
-	}
-	free(ia);
-	ntfs_attr_close(ia_na);
-	ntfs_attr_put_search_ctx(ctx);
-	/*
-	 * No child node present, return error code ENOENT, unless we have got
-	 * the mft reference of a matching name cached in mref in which case
-	 * return mref.
-	 */
-	if (mref)
-		return mref;
-	ntfs_log_debug("Entry not found.\n");
-	errno = ENOENT;
-	return -1;
-put_err_out:
-	eo = EIO;
-	ntfs_log_debug("Corrupt directory. Aborting lookup.\n");
-eo_put_err_out:
-	ntfs_attr_put_search_ctx(ctx);
-	errno = eo;
-	return -1;
-close_err_out:
-	eo = errno;
-	free(ia);
-	ntfs_attr_close(ia_na);
-	goto eo_put_err_out;
-}
-
-/**
- * ntfs_pathname_to_inode_num - find the inode number which represents the
- * 				given pathname
- * @vol:       An ntfs volume obtained from ntfs_mount
- * @parent:    A directory inode to begin the search (may be NULL)
- * @pathname:  Pathname to be located
- *
- * Take an ASCII pathname and find the inode that represents it.  The function
- * splits the path and then descends the directory tree.  If @parent is NULL,
- * then the root directory '.' will be used as the base for the search.
- *
- * Return:  -1    Error, the pathname was invalid, or some other error occurred
- *          else  Success, the pathname was valid
- */
-u64 ntfs_pathname_to_inode_num(ntfs_volume *vol, ntfs_inode *parent,
-		const char *pathname)
-{
-	u64 inum, result;
-	int len, err = 0;
-	char *p, *q;
-	ntfs_inode *ni = NULL;
-	ntfschar *unicode = NULL;
-	char *ascii = NULL;
-
-	inum = result = (u64)-1;
-	if (!vol || !pathname) {
-		err = EINVAL;
-		goto close;
-	}
-	ntfs_log_trace("Path: '%s'\n", pathname);
-	if (parent) {
-		ni = parent;
-	} else
-		inum = FILE_root;
-	unicode = calloc(1, MAX_PATH);
-	ascii = strdup(pathname);
-	if (!unicode || !ascii) {
-		ntfs_log_error("Out of memory.\n");
-		err = ENOMEM;
-		goto close;
-	}
-	p = ascii;
-	/* Remove leading /'s. */
-	while (p && *p == PATH_SEP)
-		p++;
-	while (p && *p) {
-		if (!ni) {
-			ni = ntfs_inode_open(vol, inum);
-			if (!ni) {
-				ntfs_log_debug("Cannot open inode %llu.\n",
-						(unsigned long long)inum);
-				err = EIO;
-				goto close;
-			}
-		}
-		/* Find the end of the first token. */
-		q = strchr(p, PATH_SEP);
-		if (q != NULL) {
-			*q = 0;
-			q++;
-		}
-		len = ntfs_mbstoucs(p, &unicode, MAX_PATH);
-		if (len < 0) {
-			ntfs_log_debug("Couldn't convert name to Unicode: "
-					"%s.\n", p);
-			err = EILSEQ;
-			goto close;
-		}
-		inum = ntfs_inode_lookup_by_name(ni, unicode, len);
-		if (inum == (u64)-1) {
-			ntfs_log_debug("Couldn't find name '%s' in pathname "
-					"'%s'.\n", p, pathname);
-			err = ENOENT;
-			goto close;
-		}
-		inum = MREF(inum);
-		if (ni != parent)
-			ntfs_inode_close(ni);
-		ni = NULL;
-		p = q;
-		while (p && *p == PATH_SEP)
-			p++;
-	}
-	result = inum;
-close:
-	if (ni && (ni != parent))
-		ntfs_inode_close(ni);
-	free(ascii);
-	free(unicode);
-	if (err)
-		errno = err;
-	return result;
-}
-
-/**
- * ntfs_pathname_to_inode - Find the inode which represents the given pathname
- * @vol:       An ntfs volume obtained from ntfs_mount
- * @parent:    A directory inode to begin the search (may be NULL)
- * @pathname:  Pathname to be located
- *
- * Take an ASCII pathname and find the inode that represents it.  The function
- * splits the path and then descends the directory tree.  If @parent is NULL,
- * then the root directory '.' will be used as the base for the search.
- *
- * Return:  inode  Success, the pathname was valid
- *	    NULL   Error, the pathname was invalid, or some other error occurred
- */
-ntfs_inode *ntfs_pathname_to_inode(ntfs_volume *vol, ntfs_inode *parent,
-		const char *pathname)
-{
-	u64 inum;
-
-	inum = ntfs_pathname_to_inode_num(vol, parent, pathname);
-	if (inum == (u64)-1)
-		return NULL;
-	return ntfs_inode_open(vol, inum);
-}
-
-/*
- * The little endian Unicode string ".." for ntfs_readdir().
- */
-static const ntfschar dotdot[3] = { const_cpu_to_le16('.'),
-				   const_cpu_to_le16('.'),
-				   const_cpu_to_le16('\0') };
-
-/**
- * ntfs_filldir - ntfs specific filldir method
- * @vol:	ntfs volume with wjich we are working
- * @pos:	current position in directory
- * @ie:		current index entry
- * @dirent:	context for filldir callback supplied by the caller
- * @filldir:	filldir callback supplied by the caller
- *
- * Pass information specifying the current directory entry @ie to the @filldir
- * callback.
- */
-static int ntfs_filldir(ntfs_volume *vol, s64 *pos, INDEX_ENTRY *ie,
-		void *dirent, ntfs_filldir_t filldir)
-{
-	FILE_NAME_ATTR *fn = &ie->key.file_name;
-	unsigned dt_type;
-
-	ntfs_log_trace("Entering.\n");
-
-	/* Skip root directory self reference entry. */
-	if (MREF_LE(ie->u.indexed_file) == FILE_root)
-		return 0;
-	if (ie->key.file_name.file_attributes & FILE_ATTR_I30_INDEX_PRESENT)
-		dt_type = NTFS_DT_DIR;
-	else {
-		if (NVolInterix(vol) && fn->file_attributes & FILE_ATTR_SYSTEM)
-			dt_type = NTFS_DT_UNKNOWN;
-		else
-			dt_type = NTFS_DT_REG;
-	}
-	return filldir(dirent, fn->file_name, fn->file_name_length,
-			fn->file_name_type, *pos,
-			le64_to_cpu(ie->u.indexed_file), dt_type);
-}
-
-/**
- * ntfs_mft_get_parent_ref - find mft reference of parent directory of an inode
- * @ni:		ntfs inode whose parent directory to find
- *
- * Find the parent directory of the ntfs inode @ni. To do this, find the first
- * file name attribute in the mft record of @ni and return the parent mft
- * reference from that.
- *
- * Note this only makes sense for directories, since files can be hard linked
- * from multiple directories and there is no way for us to tell which one is
- * being looked for.
- *
- * Technically directories can have hard links, too, but we consider that as
- * illegal as Linux/UNIX do not support directory hard links.
- *
- * Return the mft reference of the parent directory on success or -1 on error
- * with errno set to the error code.
- */
-static MFT_REF ntfs_mft_get_parent_ref(ntfs_inode *ni)
-{
-	MFT_REF mref;
-	ntfs_attr_search_ctx *ctx;
-	FILE_NAME_ATTR *fn;
-	int eo;
-
-	ntfs_log_trace("Entering.\n");
-
-	if (!ni) {
-		errno = EINVAL;
-		return ERR_MREF(-1);
-	}
-
-	ctx = ntfs_attr_get_search_ctx(ni, NULL);
-	if (!ctx)
-		return ERR_MREF(-1);
-	if (ntfs_attr_lookup(AT_FILE_NAME, AT_UNNAMED, 0, 0, 0, NULL, 0, ctx)) {
-		ntfs_log_debug("No file name found in inode 0x%llx. Corrupt "
-				"inode.\n", (unsigned long long)ni->mft_no);
-		goto err_out;
-	}
-	if (ctx->attr->non_resident) {
-		ntfs_log_debug("File name attribute must be resident. "
-				"Corrupt inode 0x%llx.\n",
-				(unsigned long long)ni->mft_no);
-		goto io_err_out;
-	}
-	fn = (FILE_NAME_ATTR*)((u8*)ctx->attr +
-			le16_to_cpu(ctx->attr->u.res.value_offset));
-	if ((u8*)fn +	le32_to_cpu(ctx->attr->u.res.value_length) >
-			(u8*)ctx->attr + le32_to_cpu(ctx->attr->length)) {
-		ntfs_log_debug("Corrupt file name attribute in inode 0x%llx.\n",
-				(unsigned long long)ni->mft_no);
-		goto io_err_out;
-	}
-	mref = le64_to_cpu(fn->parent_directory);
-	ntfs_attr_put_search_ctx(ctx);
-	return mref;
-io_err_out:
-	errno = EIO;
-err_out:
-	eo = errno;
-	ntfs_attr_put_search_ctx(ctx);
-	errno = eo;
-	return ERR_MREF(-1);
-}
-
-/**
- * ntfs_readdir - read the contents of an ntfs directory
- * @dir_ni:	ntfs inode of current directory
- * @pos:	current position in directory
- * @dirent:	context for filldir callback supplied by the caller
- * @filldir:	filldir callback supplied by the caller
- *
- * Parse the index root and the index blocks that are marked in use in the
- * index bitmap and hand each found directory entry to the @filldir callback
- * supplied by the caller.
- *
- * Return 0 on success or -1 on error with errno set to the error code.
- *
- * Note: Index blocks are parsed in ascending vcn order, from which follows
- * that the directory entries are not returned sorted.
- */
-int ntfs_readdir(ntfs_inode *dir_ni, s64 *pos,
-		void *dirent, ntfs_filldir_t filldir)
-{
-	s64 i_size, br, ia_pos, bmp_pos, ia_start;
-	ntfs_volume *vol;
-	ntfs_attr *ia_na, *bmp_na = NULL;
-	ntfs_attr_search_ctx *ctx = NULL;
-	u8 *index_end, *bmp = NULL;
-	INDEX_ROOT *ir;
-	INDEX_ENTRY *ie;
-	INDEX_ALLOCATION *ia = NULL;
-	int rc, ir_pos, bmp_buf_size, bmp_buf_pos, eo;
-	u32 index_block_size, index_vcn_size;
-	u8 index_block_size_bits, index_vcn_size_bits;
-
-	ntfs_log_trace("Entering.\n");
-
-	if (!dir_ni || !pos || !filldir) {
-		errno = EINVAL;
-		return -1;
-	}
-
-	if (!(dir_ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)) {
-		errno = ENOTDIR;
-		return -1;
-	}
-
-	vol = dir_ni->vol;
-
-	ntfs_log_trace("Entering for inode 0x%llx, *pos 0x%llx.\n",
-			(unsigned long long)dir_ni->mft_no, (long long)*pos);
-
-	/* Open the index allocation attribute. */
-	ia_na = ntfs_attr_open(dir_ni, AT_INDEX_ALLOCATION, NTFS_INDEX_I30, 4);
-	if (!ia_na) {
-		if (errno != ENOENT) {
-			ntfs_log_perror("Failed to open index allocation "
-					"attribute. Directory inode 0x%llx is "
-					"corrupt or bug", (unsigned long long)
-					dir_ni->mft_no);
-			return -1;
-		}
-		i_size = 0;
-	} else
-		i_size = ia_na->data_size;
-
-	rc = 0;
-
-	/* Are we at end of dir yet? */
-	if (*pos >= i_size + vol->mft_record_size)
-		goto done;
-
-	/* Emulate . and .. for all directories. */
-	if (!*pos) {
-		rc = filldir(dirent, dotdot, 1, FILE_NAME_POSIX, *pos,
-				MK_MREF(dir_ni->mft_no,
-				le16_to_cpu(dir_ni->mrec->sequence_number)),
-				NTFS_DT_DIR);
-		if (rc)
-			goto err_out;
-		++*pos;
-	}
-	if (*pos == 1) {
-		MFT_REF parent_mref;
-
-		parent_mref = ntfs_mft_get_parent_ref(dir_ni);
-		if (parent_mref == ERR_MREF(-1)) {
-			ntfs_log_perror("Parent directory not found");
-			goto dir_err_out;
-		}
-
-		rc = filldir(dirent, dotdot, 2, FILE_NAME_POSIX, *pos,
-				parent_mref, NTFS_DT_DIR);
-		if (rc)
-			goto err_out;
-		++*pos;
-	}
-
-	ctx = ntfs_attr_get_search_ctx(dir_ni, NULL);
-	if (!ctx)
-		goto err_out;
-
-	/* Get the offset into the index root attribute. */
-	ir_pos = (int)*pos;
-	/* Find the index root attribute in the mft record. */
-	if (ntfs_attr_lookup(AT_INDEX_ROOT, NTFS_INDEX_I30, 4, CASE_SENSITIVE,
-				0, NULL, 0, ctx)) {
-		ntfs_log_debug("Index root attribute missing in directory "
-				"inode 0x%llx.\n", (unsigned long long)dir_ni->
-				mft_no);
-		goto dir_err_out;
-	}
-	/* Get to the index root value. */
-	ir = (INDEX_ROOT*)((u8*)ctx->attr +
-			le16_to_cpu(ctx->attr->u.res.value_offset));
-
-	/* Determine the size of a vcn in the directory index. */
-	index_block_size = le32_to_cpu(ir->index_block_size);
-	if (index_block_size < NTFS_BLOCK_SIZE ||
-			index_block_size & (index_block_size - 1)) {
-		ntfs_log_debug("Index block size %u is invalid.\n",
-				(unsigned)index_block_size);
-		goto dir_err_out;
-	}
-	index_block_size_bits = ffs(index_block_size) - 1;
-	if (vol->cluster_size <= index_block_size) {
-		index_vcn_size = vol->cluster_size;
-		index_vcn_size_bits = vol->cluster_size_bits;
-	} else {
-		index_vcn_size = vol->sector_size;
-		index_vcn_size_bits = vol->sector_size_bits;
-	}
-
-	/* Are we jumping straight into the index allocation attribute? */
-	if (*pos >= vol->mft_record_size) {
-		ntfs_attr_put_search_ctx(ctx);
-		ctx = NULL;
-		goto skip_index_root;
-	}
-
-	index_end = (u8*)&ir->index + le32_to_cpu(ir->index.index_length);
-	/* The first index entry. */
-	ie = (INDEX_ENTRY*)((u8*)&ir->index +
-			le32_to_cpu(ir->index.entries_offset));
-	/*
-	 * Loop until we exceed valid memory (corruption case) or until we
-	 * reach the last entry or until filldir tells us it has had enough
-	 * or signals an error (both covered by the rc test).
-	 */
-	for (;; ie = (INDEX_ENTRY*)((u8*)ie + le16_to_cpu(ie->length))) {
-		ntfs_log_debug("In index root, offset 0x%x.\n",
-				(u8*)ie - (u8*)ir);
-		/* Bounds checks. */
-		if ((u8*)ie < (u8*)ctx->mrec || (u8*)ie +
-				sizeof(INDEX_ENTRY_HEADER) > index_end ||
-				(u8*)ie + le16_to_cpu(ie->key_length) >
-				index_end)
-			goto dir_err_out;
-		/* The last entry cannot contain a name. */
-		if (ie->flags & INDEX_ENTRY_END)
-			break;
-		/* Skip index root entry if continuing previous readdir. */
-		if (ir_pos > (u8*)ie - (u8*)ir)
-			continue;
-		/* Advance the position even if going to skip the entry. */
-		*pos = (u8*)ie - (u8*)ir;
-		/*
-		 * Submit the directory entry to ntfs_filldir(), which will
-		 * invoke the filldir() callback as appropriate.
-		 */
-		rc = ntfs_filldir(vol, pos, ie, dirent, filldir);
-		if (rc)
-			goto err_out;
-	}
-	ntfs_attr_put_search_ctx(ctx);
-	ctx = NULL;
-
-	/* If there is no index allocation attribute we are finished. */
-	if (!ia_na)
-		goto EOD;
-
-	/* Advance *pos to the beginning of the index allocation. */
-	*pos = vol->mft_record_size;
-
-skip_index_root:
-
-	if (!ia_na)
-		goto done;
-
-	/* Allocate a buffer for the current index block. */
-	ia = (INDEX_ALLOCATION*)malloc(index_block_size);
-	if (!ia) {
-		ntfs_log_perror("Failed to allocate buffer for index block");
-		goto err_out;
-	}
-
-	bmp_na = ntfs_attr_open(dir_ni, AT_BITMAP, NTFS_INDEX_I30, 4);
-	if (!bmp_na) {
-		ntfs_log_perror("Failed to open index bitmap attribute");
-		goto dir_err_out;
-	}
-
-	/* Get the offset into the index allocation attribute. */
-	ia_pos = *pos - vol->mft_record_size;
-
-	bmp_pos = ia_pos >> index_block_size_bits;
-	if (bmp_pos >> 3 >= bmp_na->data_size) {
-		ntfs_log_debug("Current index position exceeds index bitmap "
-				"size.\n");
-		goto dir_err_out;
-	}
-
-	bmp_buf_size = min(bmp_na->data_size - (bmp_pos >> 3), 4096);
-	bmp = (u8*)malloc(bmp_buf_size);
-	if (!bmp) {
-		ntfs_log_perror("Failed to allocate bitmap buffer");
-		goto err_out;
-	}
-
-	br = ntfs_attr_pread(bmp_na, bmp_pos >> 3, bmp_buf_size, bmp);
-	if (br != bmp_buf_size) {
-		if (br != -1)
-			errno = EIO;
-		ntfs_log_perror("Failed to read from index bitmap attribute");
-		goto err_out;
-	}
-
-	bmp_buf_pos = 0;
-	/* If the index block is not in use find the next one that is. */
-	while (!(bmp[bmp_buf_pos >> 3] & (1 << (bmp_buf_pos & 7)))) {
-find_next_index_buffer:
-		bmp_pos++;
-		bmp_buf_pos++;
-		/* If we have reached the end of the bitmap, we are done. */
-		if (bmp_pos >> 3 >= bmp_na->data_size)
-			goto EOD;
-		ia_pos = bmp_pos << index_block_size_bits;
-		if (bmp_buf_pos >> 3 < bmp_buf_size)
-			continue;
-		/* Read next chunk from the index bitmap. */
-		if ((bmp_pos >> 3) + bmp_buf_size > bmp_na->data_size)
-			bmp_buf_size = bmp_na->data_size - (bmp_pos >> 3);
-		br = ntfs_attr_pread(bmp_na, bmp_pos >> 3, bmp_buf_size, bmp);
-		if (br != bmp_buf_size) {
-			if (br != -1)
-				errno = EIO;
-			ntfs_log_perror("Failed to read from index bitmap "
-					"attribute");
-			goto err_out;
-		}
-	}
-
-	ntfs_log_debug("Handling index block 0x%llx.\n", (long long)bmp_pos);
-
-	/* Read the index block starting at bmp_pos. */
-	br = ntfs_attr_mst_pread(ia_na, bmp_pos << index_block_size_bits, 1,
-			index_block_size, ia);
-	if (br != 1) {
-		if (br != -1)
-			errno = EIO;
-		ntfs_log_perror("Failed to read index block");
-		goto err_out;
-	}
-
-	ia_start = ia_pos & ~(s64)(index_block_size - 1);
-	if (sle64_to_cpu(ia->index_block_vcn) != ia_start >>
-			index_vcn_size_bits) {
-		ntfs_log_debug("Actual VCN (0x%llx) of index buffer is "
-				"different from expected VCN (0x%llx) in "
-				"inode 0x%llx.\n",
-				(long long)sle64_to_cpu(ia->index_block_vcn),
-				(long long)ia_start >> index_vcn_size_bits,
-				(unsigned long long)dir_ni->mft_no);
-		goto dir_err_out;
-	}
-	if (le32_to_cpu(ia->index.allocated_size) + 0x18 != index_block_size) {
-		ntfs_log_debug("Index buffer (VCN 0x%llx) of directory inode "
-				"0x%llx has a size (%u) differing from the "
-				"directory specified size (%u).\n",
-				(long long)ia_start >> index_vcn_size_bits,
-				(unsigned long long)dir_ni->mft_no,
-				(unsigned) le32_to_cpu(ia->index.allocated_size)
-				+ 0x18, (unsigned)index_block_size);
-		goto dir_err_out;
-	}
-	index_end = (u8*)&ia->index + le32_to_cpu(ia->index.index_length);
-	if (index_end > (u8*)ia + index_block_size) {
-		ntfs_log_debug("Size of index buffer (VCN 0x%llx) of directory "
-				"inode 0x%llx exceeds maximum size.\n",
-				(long long)ia_start >> index_vcn_size_bits,
-				(unsigned long long)dir_ni->mft_no);
-		goto dir_err_out;
-	}
-	/* The first index entry. */
-	ie = (INDEX_ENTRY*)((u8*)&ia->index +
-			le32_to_cpu(ia->index.entries_offset));
-	/*
-	 * Loop until we exceed valid memory (corruption case) or until we
-	 * reach the last entry or until ntfs_filldir tells us it has had
-	 * enough or signals an error (both covered by the rc test).
-	 */
-	for (;; ie = (INDEX_ENTRY*)((u8*)ie + le16_to_cpu(ie->length))) {
-		ntfs_log_debug("In index allocation, offset 0x%llx.\n",
-				(long long)ia_start + ((u8*)ie - (u8*)ia));
-		/* Bounds checks. */
-		if ((u8*)ie < (u8*)ia || (u8*)ie +
-				sizeof(INDEX_ENTRY_HEADER) > index_end ||
-				(u8*)ie + le16_to_cpu(ie->key_length) >
-				index_end) {
-			ntfs_log_debug("Index entry out of bounds in directory "
-					"inode 0x%llx.\n", (unsigned long long)
-					dir_ni->mft_no);
-			goto dir_err_out;
-		}
-		/* The last entry cannot contain a name. */
-		if (ie->flags & INDEX_ENTRY_END)
-			break;
-		/* Skip index entry if continuing previous readdir. */
-		if (ia_pos - ia_start > (u8*)ie - (u8*)ia)
-			continue;
-		/* Advance the position even if going to skip the entry. */
-		*pos = (u8*)ie - (u8*)ia + (sle64_to_cpu(
-				ia->index_block_vcn) << index_vcn_size_bits) +
-				dir_ni->vol->mft_record_size;
-		/*
-		 * Submit the directory entry to ntfs_filldir(), which will
-		 * invoke the filldir() callback as appropriate.
-		 */
-		rc = ntfs_filldir(vol, pos, ie, dirent, filldir);
-		if (rc)
-			goto err_out;
-	}
-	goto find_next_index_buffer;
-EOD:
-	/* We are finished, set *pos to EOD. */
-	*pos = i_size + vol->mft_record_size;
-done:
-	free(ia);
-	free(bmp);
-	if (bmp_na)
-		ntfs_attr_close(bmp_na);
-	if (ia_na)
-		ntfs_attr_close(ia_na);
-	ntfs_log_debug("EOD, *pos 0x%llx, returning 0.\n", (long long)*pos);
-	return 0;
-dir_err_out:
-	errno = EIO;
-err_out:
-	eo = errno;
-	if (rc)
-		ntfs_log_trace("filldir returned %i, *pos 0x%llx.", rc,
-				(long long)*pos);
-	ntfs_log_trace("Failed.\n");
-	if (ctx)
-		ntfs_attr_put_search_ctx(ctx);
-	free(ia);
-	free(bmp);
-	if (bmp_na)
-		ntfs_attr_close(bmp_na);
-	if (ia_na)
-		ntfs_attr_close(ia_na);
-	errno = eo;
-	return -1;
-}
-
-/**
- * __ntfs_create - create object on ntfs volume
- * @dir_ni:	ntfs inode for directory in which create new object
- * @name:	unicode name of new object
- * @name_len:	length of the name in unicode characters
- * @type:	type of the object to create
- * @dev:	major and minor device numbers (obtained from makedev())
- * @target:	target in unicode (only for symlinks)
- * @target_len:	length of target in unicode characters
- *
- * Internal, use ntfs_create{,_device,_symlink} wrappers instead.
- *
- * @type can be:
- *	S_IFREG		to create regular file
- *	S_IFDIR		to create directory
- *	S_IFBLK		to create block device
- *	S_IFCHR		to create character device
- *	S_IFLNK		to create symbolic link
- *	S_IFIFO		to create FIFO
- *	S_IFSOCK	to create socket
- * other values are invalid.
- *
- * @dev is used only if @type is S_IFBLK or S_IFCHR, in other cases its value
- * ignored.
- *
- * @target and @target_len are used only if @type is S_IFLNK, in other cases
- * their value ignored.
- *
- * Return opened ntfs inode that describes created object on success or NULL
- * on error with errno set to the error code.
- */
-static ntfs_inode *__ntfs_create(ntfs_inode *dir_ni,
-		ntfschar *name, u8 name_len, dev_t type, dev_t dev,
-		ntfschar *target, u8 target_len)
-{
-	ntfs_inode *ni;
-	int rollback_data = 0, rollback_sd = 0;
-	FILE_NAME_ATTR *fn = NULL;
-	STANDARD_INFORMATION *si = NULL;
-	SECURITY_DESCRIPTOR_ATTR *sd = NULL;
-	ACL *acl;
-	ACCESS_ALLOWED_ACE *ace;
-	SID *sid;
-	int err, fn_len, si_len, sd_len;
-
-	ntfs_log_trace("Entering.\n");
-
-	/* Sanity checks. */
-	if (!dir_ni || !name || !name_len) {
-		ntfs_log_error("Invalid arguments.\n");
-		errno = EINVAL;
-		return NULL;
-	}
-	/* FIXME: Reparse points requires special handling. */
-	if (dir_ni->flags & FILE_ATTR_REPARSE_POINT) {
-		errno = EOPNOTSUPP;
-		return NULL;
-	}
-	/* Allocate MFT record for new file. */
-	ni = ntfs_mft_record_alloc(dir_ni->vol, NULL);
-	if (!ni) {
-		ntfs_log_error("Failed to allocate new MFT record: %s.\n",
-				strerror(errno));
-		return NULL;
-	}
-	/*
-	 * Create STANDARD_INFORMATION attribute. Write STANDARD_INFORMATION
-	 * version 1.2, windows will upgrade it to version 3 if needed.
-	 */
-	si_len = offsetof(STANDARD_INFORMATION, u.v12.v1_end);
-	si = calloc(1, si_len);
-	if (!si) {
-		err = errno;
-		ntfs_log_error("Not enough memory.\n");
-		goto err_out;
-	}
-	si->creation_time = utc2ntfs(ni->creation_time);
-	si->last_data_change_time = utc2ntfs(ni->last_data_change_time);
-	si->last_mft_change_time = utc2ntfs(ni->last_mft_change_time);
-	si->last_access_time = utc2ntfs(ni->last_access_time);
-	if (!S_ISREG(type) && !S_ISDIR(type)) {
-		si->file_attributes = FILE_ATTR_SYSTEM;
-		ni->flags = FILE_ATTR_SYSTEM;
-	}
-	/* Add STANDARD_INFORMATION to inode. */
-	if (ntfs_attr_add(ni, AT_STANDARD_INFORMATION, AT_UNNAMED, 0,
-			(u8*)si, si_len)) {
-		err = errno;
-		ntfs_log_error("Failed to add STANDARD_INFORMATION "
-				"attribute.\n");
-		goto err_out;
-	}
-	/* Create SECURITY_DESCRIPTOR attribute (everyone has full access). */
-	/*
-	 * Calculate security descriptor length. We have 2 sub-authorities in
-	 * owner and group SIDs, but structure SID contain only one, so add
-	 * 4 bytes to every SID.
-	 */
-	sd_len = sizeof(SECURITY_DESCRIPTOR_ATTR) + 2 * (sizeof(SID) + 4) +
-		sizeof(ACL) + sizeof(ACCESS_ALLOWED_ACE);
-	sd = calloc(1, sd_len);
-	if (!sd) {
-		err = errno;
-		ntfs_log_error("Not enough memory.\n");
-		goto err_out;
-	}
-	sd->revision = 1;
-	sd->control = SE_DACL_PRESENT | SE_SELF_RELATIVE;
-	sid = (SID*)((u8*)sd + sizeof(SECURITY_DESCRIPTOR_ATTR));
-	sd->owner = cpu_to_le32((u8*)sid - (u8*)sd);
-	sid->revision = 1;
-	sid->sub_authority_count = 2;
-	sid->sub_authority[0] = cpu_to_le32(32);
-	sid->sub_authority[1] = cpu_to_le32(544);
-	sid->identifier_authority.value[5] = 5;
-	sid = (SID*)((u8*)sid + sizeof(SID) + 4);
-	sd->group = cpu_to_le32((u8*)sid - (u8*)sd);
-	sid->revision = 1;
-	sid->sub_authority_count = 2;
-	sid->sub_authority[0] = cpu_to_le32(32);
-	sid->sub_authority[1] = cpu_to_le32(544);
-	sid->identifier_authority.value[5] = 5;
-	acl = (ACL*)((u8*)sid + sizeof(SID) + 4);
-	sd->dacl = cpu_to_le32((u8*)acl - (u8*)sd);
-	acl->revision = 2;
-	acl->size = cpu_to_le16(sizeof(ACL) + sizeof(ACCESS_ALLOWED_ACE));
-	acl->ace_count = cpu_to_le16(1);
-	ace = (ACCESS_ALLOWED_ACE*)((u8*)acl + sizeof(ACL));
-	ace->type = ACCESS_ALLOWED_ACE_TYPE;
-	ace->flags = OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE;
-	ace->size = cpu_to_le16(sizeof(ACCESS_ALLOWED_ACE));
-	ace->mask = cpu_to_le32(0x1f01ff); /* FIXME */
-	ace->sid.revision = 1;
-	ace->sid.sub_authority_count = 1;
-	ace->sid.sub_authority[0] = 0;
-	ace->sid.identifier_authority.value[5] = 1;
-	/* Add SECURITY_DESCRIPTOR attribute to inode. */
-	if (ntfs_attr_add(ni, AT_SECURITY_DESCRIPTOR, AT_UNNAMED, 0,
-			(u8*)sd, sd_len)) {
-		err = errno;
-		ntfs_log_error("Failed to add SECURITY_DESCRIPTOR "
-				"attribute.\n");
-		goto err_out;
-	}
-	rollback_sd = 1;
-	/* Add DATA/INDEX_ROOT attribute. */
-	if (S_ISDIR(type)) {
-		INDEX_ROOT *ir = NULL;
-		INDEX_ENTRY *ie;
-		int ir_len, index_len;
-
-		/* Create INDEX_ROOT attribute. */
-		index_len = sizeof(INDEX_HEADER) + sizeof(INDEX_ENTRY_HEADER);
-		ir_len = offsetof(INDEX_ROOT, index) + index_len;
-		ir = calloc(1, ir_len);
-		if (!ir) {
-			err = errno;
-			ntfs_log_error("Not enough memory.\n");
-			goto err_out;
-		}
-		ir->type = AT_FILE_NAME;
-		ir->collation_rule = COLLATION_FILE_NAME;
-		ir->index_block_size = cpu_to_le32(ni->vol->indx_record_size);
-		if (ni->vol->cluster_size <= ni->vol->indx_record_size)
-			ir->clusters_per_index_block =
-					ni->vol->indx_record_size >>
-					ni->vol->cluster_size_bits;
-		else
-			ir->clusters_per_index_block =
-					ni->vol->indx_record_size >>
-					ni->vol->sector_size_bits;
-		ir->index.entries_offset = cpu_to_le32(sizeof(INDEX_HEADER));
-		ir->index.index_length = cpu_to_le32(index_len);
-		ir->index.allocated_size = cpu_to_le32(index_len);
-		ie = (INDEX_ENTRY*)((u8*)ir + sizeof(INDEX_ROOT));
-		ie->length = cpu_to_le16(sizeof(INDEX_ENTRY_HEADER));
-		ie->key_length = 0;
-		ie->flags = INDEX_ENTRY_END;
-		/* Add INDEX_ROOT attribute to inode. */
-		if (ntfs_attr_add(ni, AT_INDEX_ROOT, NTFS_INDEX_I30, 4,
-				(u8*)ir, ir_len)) {
-			err = errno;
-			free(ir);
-			ntfs_log_error("Failed to add INDEX_ROOT attribute.\n");
-			goto err_out;
-		}
-		free(ir);
-	} else {
-		INTX_FILE *data;
-		int data_len;
-
-		switch (type) {
-			case S_IFBLK:
-			case S_IFCHR:
-				data_len = offsetof(INTX_FILE, u.s.device_end);
-				data = ntfs_malloc(data_len);
-				if (!data) {
-					err = errno;
-					goto err_out;
-				}
-				data->u.s.major = cpu_to_le64(major(dev));
-				data->u.s.minor = cpu_to_le64(minor(dev));
-				if (type == S_IFBLK)
-					data->magic = INTX_BLOCK_DEVICE;
-				if (type == S_IFCHR)
-					data->magic = INTX_CHARACTER_DEVICE;
-				break;
-			case S_IFLNK:
-				data_len = sizeof(INTX_FILE_TYPES) +
-						target_len * sizeof(ntfschar);
-				data = ntfs_malloc(data_len);
-				if (!data) {
-					err = errno;
-					goto err_out;
-				}
-				data->magic = INTX_SYMBOLIC_LINK;
-				memcpy(data->u.target, target,
-						target_len * sizeof(ntfschar));
-				break;
-			case S_IFSOCK:
-				data = NULL;
-				data_len = 1;
-				break;
-			default: /* FIFO or regular file. */
-				data = NULL;
-				data_len = 0;
-				break;
-		}
-		/* Add DATA attribute to inode. */
-		if (ntfs_attr_add(ni, AT_DATA, AT_UNNAMED, 0, (u8*)data,
-				data_len)) {
-			err = errno;
-			free(data);
-			ntfs_log_error("Failed to add DATA attribute.\n");
-			goto err_out;
-		}
-		rollback_data = 1;
-		free(data);
-	}
-	/* Create FILE_NAME attribute. */
-	fn_len = sizeof(FILE_NAME_ATTR) + name_len * sizeof(ntfschar);
-	fn = ntfs_calloc(fn_len);
-	if (!fn) {
-		err = errno;
-		goto err_out;
-	}
-	fn->parent_directory = MK_LE_MREF(dir_ni->mft_no,
-			le16_to_cpu(dir_ni->mrec->sequence_number));
-	fn->file_name_length = name_len;
-	fn->file_name_type = FILE_NAME_POSIX;
-	if (S_ISDIR(type))
-		fn->file_attributes = FILE_ATTR_I30_INDEX_PRESENT;
-	if (!S_ISREG(type) && !S_ISDIR(type))
-		fn->file_attributes = FILE_ATTR_SYSTEM;
-	fn->creation_time = utc2ntfs(ni->creation_time);
-	fn->last_data_change_time = utc2ntfs(ni->last_data_change_time);
-	fn->last_mft_change_time = utc2ntfs(ni->last_mft_change_time);
-	fn->last_access_time = utc2ntfs(ni->last_access_time);
-	memcpy(fn->file_name, name, name_len * sizeof(ntfschar));
-	/* Add FILE_NAME attribute to inode. */
-	if (ntfs_attr_add(ni, AT_FILE_NAME, AT_UNNAMED, 0, (u8*)fn, fn_len)) {
-		err = errno;
-		ntfs_log_error("Failed to add FILE_NAME attribute.\n");
-		goto err_out;
-	}
-	/* Add FILE_NAME attribute to index. */
-	if (ntfs_index_add_filename(dir_ni, fn, MK_MREF(ni->mft_no,
-			le16_to_cpu(ni->mrec->sequence_number)))) {
-		err = errno;
-		ntfs_log_perror("Failed to add entry to the index");
-		goto err_out;
-	}
-	/* Set hard links count and directory flag. */
-	ni->mrec->link_count = cpu_to_le16(1);
-	if (S_ISDIR(type))
-		ni->mrec->flags |= MFT_RECORD_IS_DIRECTORY;
-	ntfs_inode_mark_dirty(ni);
-	/* Done! */
-	free(fn);
-	free(si);
-	free(sd);
-	ntfs_log_trace("Done.\n");
-	return ni;
-err_out:
-	ntfs_log_trace("Failed.\n");
-	if (rollback_sd) {
-		ntfs_attr *na;
-
-		na = ntfs_attr_open(ni, AT_SECURITY_DESCRIPTOR, AT_UNNAMED, 0);
-		if (!na)
-			ntfs_log_perror("Failed to open SD (0x50) attribute of "
-					" inode 0x%llx. Run chkdsk.\n",
-					(unsigned long long)ni->mft_no);
-		else if (ntfs_attr_rm(na))
-			ntfs_log_perror("Failed to remove SD (0x50) attribute "
-					"of inode 0x%llx. Run chkdsk.\n",
-					(unsigned long long)ni->mft_no);
-	}
-	if (rollback_data) {
-		ntfs_attr *na;
-
-		na = ntfs_attr_open(ni, AT_DATA, AT_UNNAMED, 0);
-		if (!na)
-			ntfs_log_perror("Failed to open data attribute of "
-					" inode 0x%llx. Run chkdsk.\n",
-					(unsigned long long)ni->mft_no);
-		else if (ntfs_attr_rm(na))
-			ntfs_log_perror("Failed to remove data attribute of "
-					"inode 0x%llx. Run chkdsk.\n",
-					(unsigned long long)ni->mft_no);
-	}
-	/*
-	 * Free extent MFT records (should not exist any with current
-	 * ntfs_create implementation, but for any case if something will be
-	 * changed in the future).
-	 */
-	while (ni->nr_extents)
-		if (ntfs_mft_record_free(ni->vol, *(ni->u.extent_nis))) {
-			err = errno;
-			ntfs_log_error("Failed to free extent MFT record.  "
-					"Leaving inconsistent metadata.\n");
-		}
-	if (ntfs_mft_record_free(ni->vol, ni))
-		ntfs_log_error("Failed to free MFT record.  "
-				"Leaving inconsistent metadata. Run chkdsk.\n");
-	free(fn);
-	free(si);
-	free(sd);
-	errno = err;
-	return NULL;
-}
-
-/**
- * Some wrappers around __ntfs_create() ...
- */
-
-ntfs_inode *ntfs_create(ntfs_inode *dir_ni, ntfschar *name, u8 name_len,
-		dev_t type)
-{
-	if (type != S_IFREG && type != S_IFDIR && type != S_IFIFO &&
-			type != S_IFSOCK) {
-		ntfs_log_error("Invalid arguments.\n");
-		return NULL;
-	}
-	return __ntfs_create(dir_ni, name, name_len, type, 0, NULL, 0);
-}
-
-ntfs_inode *ntfs_create_device(ntfs_inode *dir_ni, ntfschar *name, u8 name_len,
-		dev_t type, dev_t dev)
-{
-	if (type != S_IFCHR && type != S_IFBLK) {
-		ntfs_log_error("Invalid arguments.\n");
-		return NULL;
-	}
-	return __ntfs_create(dir_ni, name, name_len, type, dev, NULL, 0);
-}
-
-ntfs_inode *ntfs_create_symlink(ntfs_inode *dir_ni, ntfschar *name, u8 name_len,
-		ntfschar *target, u8 target_len)
-{
-	if (!target || !target_len) {
-		ntfs_log_error("Invalid arguments.\n");
-		return NULL;
-	}
-	return __ntfs_create(dir_ni, name, name_len, S_IFLNK, 0,
-			target, target_len);
-}
-
-/**
- * ntfs_delete - delete file or directory from ntfs volume
- * @pni:	ntfs inode for object to delete
- * @dir_ni:	ntfs inode for directory in which delete object
- * @name:	unicode name of the object to delete
- * @name_len:	length of the name in unicode characters
- *
- * @pni is pointer to pointer to ntfs_inode structure. Upon successful
- * completion and if inode is really deleted (there are no more links left to
- * it) this function will close @*pni and set it to NULL, in the other cases
- * @*pni will stay opened.
- *
- * Return 0 on success or -1 on error with errno set to the error code.
- */
-int ntfs_delete(ntfs_inode **pni, ntfs_inode *dir_ni, ntfschar *name,
-		u8 name_len)
-{
-	ntfs_attr_search_ctx *actx = NULL;
-	ntfs_index_context *ictx = NULL;
-	ntfs_inode *ni;
-	FILE_NAME_ATTR *fn = NULL;
-	BOOL looking_for_dos_name = FALSE, looking_for_win32_name = FALSE;
-	BOOL case_sensitive_match = TRUE;
-	int err = 0;
-
-	ntfs_log_trace("Entering.\n");
-
-	if (!pni || !(ni = *pni) || !dir_ni || !name || !name_len ||
-			ni->nr_extents == -1 || dir_ni->nr_extents == -1) {
-		ntfs_log_error("Invalid arguments.\n");
-		errno = EINVAL;
-		goto err_out;
-	}
-	if (ni->nr_references > 1 && le16_to_cpu(ni->mrec->link_count) == 1) {
-		ntfs_log_error("Trying to deleting inode with left "
-				"references.\n");
-		errno = EINVAL;
-		goto err_out;
-	}
-	/*
-	 * Search for FILE_NAME attribute with such name. If it's in POSIX or
-	 * WIN32_AND_DOS namespace, then simply remove it from index and inode.
-	 * If filename in DOS or in WIN32 namespace, then remove DOS name first,
-	 * only then remove WIN32 name. Mark WIN32 name as POSIX name to prevent
-	 * chkdsk to complain about DOS name absence in case if DOS name had
-	 * been successfully deleted, but WIN32 name remove failed.
-	 */
-	actx = ntfs_attr_get_search_ctx(ni, NULL);
-	if (!actx)
-		goto err_out;
-search:
-	while (!ntfs_attr_lookup(AT_FILE_NAME, AT_UNNAMED, 0, CASE_SENSITIVE,
-			0, NULL, 0, actx)) {
-		errno = 0;
-		fn = (FILE_NAME_ATTR*)((u8*)actx->attr +
-				le16_to_cpu(actx->attr->u.res.value_offset));
-		ntfs_log_trace("Found filename with instance number %d.\n",
-				le16_to_cpu(actx->attr->instance));
-		if (looking_for_dos_name) {
-			if (fn->file_name_type == FILE_NAME_DOS)
-				break;
-			else
-				continue;
-		}
-		if (looking_for_win32_name) {
-			if  (fn->file_name_type == FILE_NAME_WIN32)
-				break;
-			else
-				continue;
-		}
-		if (dir_ni->mft_no == MREF_LE(fn->parent_directory) &&
-				ntfs_names_are_equal(fn->file_name,
-				fn->file_name_length, name,
-				name_len, case_sensitive_match ?
-				CASE_SENSITIVE : IGNORE_CASE, ni->vol->upcase,
-				ni->vol->upcase_len)) {
-			if (fn->file_name_type == FILE_NAME_WIN32) {
-				looking_for_dos_name = TRUE;
-				ntfs_attr_reinit_search_ctx(actx);
-				ntfs_log_trace("Restart search. "
-						"Looking for DOS name.\n");
-				continue;
-			}
-			if (fn->file_name_type == FILE_NAME_DOS)
-				looking_for_dos_name = TRUE;
-			break;
-		}
-	}
-	if (errno) {
-		/*
-		 * If case sensitive search failed and volume mounted case
-		 * insensitive, then try once again ignoring case.
-		 */
-		if (errno == ENOENT && !NVolCaseSensitive(ni->vol) &&
-				case_sensitive_match) {
-			case_sensitive_match = FALSE;
-			ntfs_attr_reinit_search_ctx(actx);
-			ntfs_log_trace("Restart search. Ignore case.");
-			goto search;
-		}
-		ntfs_log_error("Failed to find requested filename in FILE_NAME "
-				"attributes that belong to this inode.\n");
-		goto err_out;
-	}
-	/* If deleting directory check it to be empty. */
-	if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
-		ntfs_attr *na;
-
-		na = ntfs_attr_open(ni, AT_INDEX_ROOT, NTFS_INDEX_I30, 4);
-		if (!na) {
-			ntfs_log_error("Corrupt directory or library bug.\n");
-			errno = EIO;
-			goto err_out;
-		}
-		/*
-		 * Do not allow non-empty directory deletion if hard links count
-		 * is 1 (always) or 2 (in case if filename in DOS namespace,
-		 * because we delete it first in file which have both WIN32 and
-		 * DOS names).
-		 */
-		if ((na->data_size != sizeof(INDEX_ROOT) + sizeof(
-				INDEX_ENTRY_HEADER)) && (le16_to_cpu(
-				ni->mrec->link_count) == 1 ||
-				(le16_to_cpu(ni->mrec->link_count) == 2 &&
-				fn->file_name_type == FILE_NAME_DOS))) {
-			ntfs_attr_close(na);
-			ntfs_log_error("Directory is not empty.\n");
-			errno = ENOTEMPTY;
-			goto err_out;
-		}
-		ntfs_attr_close(na);
-	}
-	/* One more sanity check. */
-	if (ni->nr_references > 1 && looking_for_dos_name &&
-			le16_to_cpu(ni->mrec->link_count) == 2) {
-		ntfs_log_error("Trying to deleting inode with left "
-				"references.\n");
-		errno = EINVAL;
-		goto err_out;
-	}
-	ntfs_log_trace("Found!\n");
-	/* Search for such FILE_NAME in index. */
-	ictx = ntfs_index_ctx_get(dir_ni, NTFS_INDEX_I30, 4);
-	if (!ictx)
-		goto err_out;
-	if (ntfs_index_lookup(fn, le32_to_cpu(actx->attr->u.res.value_length), ictx))
-		goto err_out;
-	/* Set namespace to POSIX for WIN32 name. */
-	if (fn->file_name_type == FILE_NAME_WIN32) {
-		fn->file_name_type = FILE_NAME_POSIX;
-		ntfs_inode_mark_dirty(actx->ntfs_ino);
-		((FILE_NAME_ATTR*)ictx->data)->file_name_type = FILE_NAME_POSIX;
-		ntfs_index_entry_mark_dirty(ictx);
-	}
-	/* Do not support reparse point deletion yet. */
-	if (((FILE_NAME_ATTR*)ictx->data)->file_attributes &
-			FILE_ATTR_REPARSE_POINT) {
-		errno = EOPNOTSUPP;
-		goto err_out;
-	}
-	/* Remove FILE_NAME from index. */
-	if (ntfs_index_rm(ictx))
-		goto err_out;
-
-	/* Remove FILE_NAME from inode. */
-	if (ntfs_attr_record_rm(actx))
-		goto err_out;
-	/* Decrement hard link count. */
-	ni->mrec->link_count = cpu_to_le16(le16_to_cpu(
-			ni->mrec->link_count) - 1);
-	ntfs_inode_mark_dirty(ni);
-	if (looking_for_dos_name) {
-		looking_for_dos_name = FALSE;
-		looking_for_win32_name = TRUE;
-		ntfs_attr_reinit_search_ctx(actx);
-		ntfs_log_trace("DOS name deleted. "
-				"Now search for WIN32 name.\n");
-		goto search;
-	} else
-		ntfs_log_trace("Deleted.\n");
-	/* TODO: Update object id, quota and security indexes if required. */
-	/*
-	 * If hard link count is not equal to zero then we are done. In other
-	 * case there are no reference to this inode left, so we should free all
-	 * non-resident attributes and mark all MFT record as not in use.
-	 */
-	if (ni->mrec->link_count)
-		goto out;
-	ntfs_attr_reinit_search_ctx(actx);
-	while (!ntfs_attrs_walk(actx)) {
-		if (actx->attr->non_resident) {
-			runlist *rl;
-
-			rl = ntfs_mapping_pairs_decompress(ni->vol, actx->attr,
-					NULL);
-			if (!rl) {
-				err = errno;
-				ntfs_log_error("Failed to decompress runlist.  "
-						"Leaving inconsistent "
-						"metadata.\n");
-				continue;
-			}
-			if (ntfs_cluster_free_from_rl(ni->vol, rl)) {
-				err = errno;
-				ntfs_log_error("Failed to free clusters.  "
-						"Leaving inconsistent "
-						"metadata.\n");
-				continue;
-			}
-			free(rl);
-		}
-	}
-	if (errno != ENOENT) {
-		err = errno;
-		ntfs_log_error("Attribute enumeration failed.  "
-				"Probably leaving inconsistent metadata.\n");
-	}
-	/* All extents should be attached after attribute walk. */
-	while (ni->nr_extents)
-		if (ntfs_mft_record_free(ni->vol, *(ni->u.extent_nis))) {
-			err = errno;
-			ntfs_log_error("Failed to free extent MFT record.  "
-					"Leaving inconsistent metadata.\n");
-		}
-	if (ntfs_mft_record_free(ni->vol, ni)) {
-		err = errno;
-		ntfs_log_error("Failed to free base MFT record.  "
-				"Leaving inconsistent metadata.\n");
-	}
-	*pni = NULL;
-out:
-	if (actx)
-		ntfs_attr_put_search_ctx(actx);
-	if (ictx)
-		ntfs_index_ctx_put(ictx);
-	if (err) {
-		ntfs_log_error("%s(): Failed.\n", "ntfs_delete");
-		errno = err;
-		return -1;
-	}
-	ntfs_log_trace("Done.\n");
-	return 0;
-err_out:
-	err = errno;
-	goto out;
-}
-
-/**
- * ntfs_link - create hard link for file or directory
- * @ni:		ntfs inode for object to create hard link
- * @dir_ni:	ntfs inode for directory in which new link should be placed
- * @name:	unicode name of the new link
- * @name_len:	length of the name in unicode characters
- *
- * NOTE: At present we allow creating hard links to directories, we use them
- * in a temporary state during rename. But it's definitely bad idea to have
- * hard links to directories as a result of operation.
- * FIXME: Create internal  __ntfs_link that allows hard links to a directories
- * and external ntfs_link that do not. Write ntfs_rename that uses __ntfs_link.
- *
- * Return 0 on success or -1 on error with errno set to the error code.
- */
-int ntfs_link(ntfs_inode *ni, ntfs_inode *dir_ni, ntfschar *name, u8 name_len)
-{
-	FILE_NAME_ATTR *fn = NULL;
-	int fn_len, err;
-
-	ntfs_log_trace("Entering.\n");
-
-	if (!ni || !dir_ni || !name || !name_len ||
-			ni->mft_no == dir_ni->mft_no) {
-		err = EINVAL;
-		ntfs_log_error("Invalid arguments.");
-		goto err_out;
-	}
-	/* FIXME: Reparse points requires special handling. */
-	if (ni->flags & FILE_ATTR_REPARSE_POINT) {
-		err = EOPNOTSUPP;
-		goto err_out;
-	}
-	/* Create FILE_NAME attribute. */
-	fn_len = sizeof(FILE_NAME_ATTR) + name_len * sizeof(ntfschar);
-	fn = ntfs_calloc(fn_len);
-	if (!fn) {
-		err = errno;
-		goto err_out;
-	}
-	fn->parent_directory = MK_LE_MREF(dir_ni->mft_no,
-			le16_to_cpu(dir_ni->mrec->sequence_number));
-	fn->file_name_length = name_len;
-	fn->file_name_type = FILE_NAME_POSIX;
-	fn->file_attributes = ni->flags;
-	if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY)
-		fn->file_attributes |= FILE_ATTR_I30_INDEX_PRESENT;
-	fn->allocated_size = cpu_to_sle64(ni->allocated_size);
-	fn->data_size = cpu_to_sle64(ni->data_size);
-	fn->creation_time = utc2ntfs(ni->creation_time);
-	fn->last_data_change_time = utc2ntfs(ni->last_data_change_time);
-	fn->last_mft_change_time = utc2ntfs(ni->last_mft_change_time);
-	fn->last_access_time = utc2ntfs(ni->last_access_time);
-	memcpy(fn->file_name, name, name_len * sizeof(ntfschar));
-	/* Add FILE_NAME attribute to index. */
-	if (ntfs_index_add_filename(dir_ni, fn, MK_MREF(ni->mft_no,
-			le16_to_cpu(ni->mrec->sequence_number)))) {
-		err = errno;
-		ntfs_log_error("Failed to add entry to the index.\n");
-		goto err_out;
-	}
-	/* Add FILE_NAME attribute to inode. */
-	if (ntfs_attr_add(ni, AT_FILE_NAME, AT_UNNAMED, 0, (u8*)fn, fn_len)) {
-		ntfs_index_context *ictx;
-
-		err = errno;
-		ntfs_log_error("Failed to add FILE_NAME attribute.\n");
-		/* Try to remove just added attribute from index. */
-		ictx = ntfs_index_ctx_get(dir_ni, NTFS_INDEX_I30, 4);
-		if (!ictx)
-			goto rollback_failed;
-		if (ntfs_index_lookup(fn, fn_len, ictx)) {
-			ntfs_index_ctx_put(ictx);
-			goto rollback_failed;
-		}
-		if (ntfs_index_rm(ictx)) {
-			ntfs_index_ctx_put(ictx);
-			goto rollback_failed;
-		}
-		goto err_out;
-	}
-	/* Increment hard links count. */
-	ni->mrec->link_count = cpu_to_le16(le16_to_cpu(
-			ni->mrec->link_count) + 1);
-	/* Done! */
-	ntfs_inode_mark_dirty(ni);
-	free(fn);
-	ntfs_log_trace("Done.\n");
-	return 0;
-rollback_failed:
-	ntfs_log_error("Rollback failed. Leaving inconsistent metadata.\n");
-err_out:
-	ntfs_log_error("%s(): Failed.\n", "ntfs_link");
-	free(fn);
-	errno = err;
-	return -1;
-}
-
