Merge cam.ac.uk:/rain/usr/src/bkntfs-tng-2.5 into cam.ac.uk:/usr/src/tng

Documentation/filesystems/ntfs.txt

+NTFS Overview
+=============
+
+To mount an NTFS 1.2/3.x (Windows NT4/2000/XP) volume, use the filesystem
+type 'ntfs'. The driver currently works only in read-only mode, with no
+fault-tolerance supported.
+
+For ftdisk support, limited success was reported with volume sets on top of
+the md driver, although mirror and stripe sets should work as well - if the
+md driver can be talked into using the same layout as Windows NT. However,
+using the md driver will fail if any of your NTFS partitions have an odd
+number of sectors.
+
+Supported mount options
+=======================
+
+nls=name		Character set to use when returning file names.
+			Unlike VFAT, NTFS suppresses names that contain
+			unconvertible characters. Note that most character
+			sets contain insufficient characters to represent all
+			possible Unicode characters that can exist on NTFS. To
+			be sure you are not missing any files, you are advised
+			to use nls=utf8 which is capable of representing all
+			Unicode characters.
+
+uid=
+gid=
+umask=			Provide default owner, group, and access mode mask.
+			These options work as documented in mount(8). By
+			default, the files are owned by root and are not
+			readable by anyone else.
+
+fmask=
+dmask=			Instead of specifying umask which applies both to
+			files and directories, fmask applies only to files and
+			dmask only to directories.
+
+sloppy=<BOOL>		If sloppy is specified, ignore unknown mount options.
+			Otherwise the default behaviour is to abort mount if
+			any unknown options are found.
+
+errors=opt		What to do when critical file system errors are found.
+			Following values can be used for "opt":
+			  continue: DEFAULT, try to clean-up as much as
+				    possible, e.g. marking a corrupt inode as
+				    bad so it is no longer accessed.
+			  recover:  At present only supported is recovery of
+				    the boot sector from the backup copy. If a
+				    read-only mount, the recovery is done in
+				    memory only and not written to disk.
+
+show_inodes=opt		Allows choice of which types of inode names readdir()
+			returns, i.e. this affects what "ls" shows. Following
+			values can be used for "opt":
+			   system: show system files
+			   win32:  long file names (includes POSIX) [DEFAULT]
+			   long:   same as win32
+			   dos:    short file names only (excludes POSIX)
+			   short:  same as dos
+			   posix:  same as both win32 and dos
+			   all:    all file names
+			Note that the options are additive, i.e. specifying:
+			   show_inodes=system,show_inodes=win32,show_inodes=dos
+			is the same as specifying:
+			   show_inodes=all
+			Note that the "posix" and "all" options will show all
+			directory names, BUT the link count on each directory
+			inode entry is set to 1, due to Linux not supporting
+			directory hard links. This may well confuse some
+			userspace applications, since the directory names will
+			have the same inode numbers. Thus it is NOT advisable
+			to use the "posix" and "all" options. We provide them
+			only for completeness sake.
+			Further, note that the "system" option will not show
+			"$MFT" due to bugs/mis-features in glibc. Even though
+			it does not show, you can specifically "ls" it:
+				ls -l \$MFT
+			And of course you can stat it, too.
+			Further, note that irrespective of what show_inodes
+			option(s) you use, all files are accessible when you
+			specify the correct name, even though they may not be
+			shown in a normal "ls", i.e. you can always access the
+			system files and both the short and long file names of
+			files and directories.
+			Finally, note that win32 and dos file names are not
+			case sensitive and can be accessed using any
+			combination of lower and upper case, while POSIX file
+			names are case sensitive and they can only be accessed
+			given the correct case.
+
+mft_zone_multiplier=	Set the MFT zone multiplier for the volume (this
+			setting is not persistent across mounts and can be
+			changed from mount to mount but cannot be changed on
+			remount). Values of 1 to 4 are allowed, 1 being the
+			default. The MFT zone multiplier determines how much
+			space is reserved for the MFT on the volume. If all
+			other space is used up, then the MFT zone will be
+			shrunk dynamically, so this has no impact on the
+			amount of free space. However, it can have an impact
+			on performance by affecting fragmentation of the MFT.
+			In general use the default. If you have a lot of small
+			files then use a higher value. The values have the
+			following meaning:
+			      Value	     MFT zone size (% of volume size)
+				1		12.5%
+				2		25%
+				3		37.5%
+				4		50%
+			Note this option is irrelevant for read-only mounts.
+
+Features
+========
+
+- Implementation of NTFS read support functionally equivalent to the old ntfs
+  driver.
+
+Known bugs and (mis-)features
+=============================
+
+- None
+
+Please send bug reports/comments/feedback/abuse to the Linux-NTFS development
+list at sourceforge: linux-ntfs-dev@lists.sourceforge.net
+
+ChangeLog
+=========
+
+Note that a technical ChangeLog aimed at kernel hackers is in fs/ntfs/ChangeLog.
+
+TNG-0.0.8:
+	- Started ChangeLog.
+

fs/Config.help

@@ -576,6 +576,37 @@ CONFIG_HPFS_FS
   say M here and read <file:Documentation/modules.txt>.  If unsure,
   say N.
 
+CONFIG_NTFS_FS
+  NTFS is the file system of Microsoft Windows NT/2000/XP. For more
+  information see <file:Documentation/filesystems/ntfs.txt>. Saying Y
+  here would allow you to read from NTFS partitions.
+
+  This file system is also available as a module ( = code which can be
+  inserted in and removed from the running kernel whenever you want).
+  The module will be called ntfs.o. If you want to compile it as a
+  module, say M here and read <file:Documentation/modules.txt>. If you
+  are not using Windows NT/2000/XP in addition to Linux on your computer
+  it is safe to say N.
+
+CONFIG_NTFS_DEBUG
+  If you are experiencing any problems with the NTFS file system, say
+  Y here. This will result in additional consistency checks to be
+  performed by the driver as well as additional debugging messages to
+  be written to the system log. Note that debugging messages are
+  disabled by default. To enable them, supply the option debug_msgs=1
+  at the kernel command line when booting the kernel or as an option
+  to insmod when loading the ntfs module. Once the driver is active,
+  you can enable debugging messages by doing (as root):
+    echo 1 > /proc/sys/fs/ntfs-debug
+  Replacing the "1" with "0" would disable debug messages.
+
+  If you leave debugging messages disable, this results in little
+  overhead, but enabling debug messages results in very significant
+  slowdown of the system.
+
+  When reporting bugs, please try to have available a full dump of
+  debugging messages while the misbehaviour was occurring.
+
 CONFIG_SYSV_FS
   SCO, Xenix and Coherent are commercial Unix systems for Intel
   machines, and Version 7 was used on the DEC PDP-11. Saying Y

fs/Config.in

@@ -62,6 +62,9 @@ tristate 'Minix fs support' CONFIG_MINIX_FS
 
 tristate 'FreeVxFS file system support (VERITAS VxFS(TM) compatible)' CONFIG_VXFS_FS
 
+tristate 'NTFS file system support (read only)' CONFIG_NTFS_FS
+dep_mbool '  NTFS debugging support' CONFIG_NTFS_DEBUG $CONFIG_NTFS_FS
+
 tristate 'OS/2 HPFS file system support' CONFIG_HPFS_FS
 
 bool '/proc file system support' CONFIG_PROC_FS

fs/Makefile

@@ -52,6 +52,7 @@ subdir-$(CONFIG_SYSV_FS)	+= sysv
 subdir-$(CONFIG_SMB_FS)		+= smbfs
 subdir-$(CONFIG_NCP_FS)		+= ncpfs
 subdir-$(CONFIG_HPFS_FS)	+= hpfs
+subdir-$(CONFIG_NTFS_FS)	+= ntfs
 subdir-$(CONFIG_UFS_FS)		+= ufs
 subdir-$(CONFIG_EFS_FS)		+= efs
 subdir-$(CONFIG_JFFS_FS)	+= jffs

fs/ntfs/Makefile

+# Rules for making the NTFS TNG driver.
+
+O_TARGET := ntfs.o
+
+obj-y   := time.o unistr.o inode.o file.o mft.o super.o debug.o aops.o \
+		attrib.o dir.o namei.o mst.o upcase.o compress.o sysctl.o
+
+obj-m   := $(O_TARGET)
+
+EXTRA_CFLAGS = -DNTFS_VERSION=\"TNG-0.0.8\"
+
+ifeq ($(CONFIG_NTFS_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
+
+include $(TOPDIR)/Rules.make
+

fs/ntfs/attraops.c

+#include "ntfs.h"
+
+/*
+ * We need to define the attribute object structure. FIXME: Move these to
+ * ntfs.h.
+ */
+typedef struct {
+	ntfs_inode *a_ni;
+	ntfs_volume *a_vol;
+	atomic_t a_count;
+	s64 a_size;
+	struct rw_semaphore a_sem;
+	struct address_space a_mapping;
+	unsigned long a_flags;
+} attr_obj;
+
+/**
+ * ntfs_attr_readpage - fill a page @page of an attribute object @aobj with data
+ * @aobj:	attribute object to which the page @page belongs
+ * @page:	page cache page to fill with data
+ *
+ */
+//static int ntfs_attr_readpage(attr_obj *aobj, struct page *page)
+static int ntfs_attr_readpage(struct file *aobj, struct page *page)
+{
+	return -EOPNOTSUPP;
+}
+
+/*
+ * Address space operations for accessing attributes. Note that these functions
+ * do not accept an inode as the first parameter but an attribute object. We
+ * use this to implement a generic interface that is not bound to inodes in
+ * order to support multiple named streams per file, multiple bitmaps per file
+ * and directory, etc. Basically, this gives access to any attribute within an
+ * mft record.
+ *
+ * We make use of a slab cache for attribute object allocations.
+ */
+struct address_space_operations ntfs_attr_aops = {
+	writepage:	NULL,			/* Write dirty page to disk. */
+	readpage:	ntfs_attr_readpage,	/* Fill page with data. */
+	sync_page:	block_sync_page,	/* Currently, just unplugs the
+						   disk request queue. */
+	prepare_write:	NULL,			/* . */
+	commit_write:	NULL,			/* . */
+	//truncatepage:	NULL,			/* . */
+};
+

fs/ntfs/attrib.h

+/*
+ * attrib.h - Defines for attribute handling in NTFS Linux kernel driver.
+ *	      Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001,2002 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 <linux/fs.h>
+
+#include "endian.h"
+#include "types.h"
+#include "layout.h"
+
+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;
+
+/**
+ * attr_search_context - 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
+ *
+ * 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;
+} attr_search_context;
+
+extern run_list_element *decompress_mapping_pairs(const ntfs_volume *vol,
+		const ATTR_RECORD *attr, run_list_element *old_rl);
+
+extern int map_run_list(ntfs_inode *ni, VCN vcn);
+
+extern LCN vcn_to_lcn(const run_list_element *rl, const VCN vcn);
+
+extern BOOL find_attr(const ATTR_TYPES type, const uchar_t *name,
+		const u32 name_len, const IGNORE_CASE_BOOL ic, const u8 *val,
+		const u32 val_len, attr_search_context *ctx);
+
+BOOL lookup_attr(const ATTR_TYPES type, const uchar_t *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);
+
+extern int load_attribute_list(ntfs_volume *vol, run_list_element *rl, u8 *al,
+		const s64 size);
+
+static inline s64 attribute_value_length(const ATTR_RECORD *a)
+{
+	if (!a->non_resident)
+		return (s64)le32_to_cpu(a->_ARA(value_length));
+	return sle64_to_cpu(a->_ANR(data_size));
+}
+
+extern void reinit_attr_search_ctx(attr_search_context *ctx);
+extern int get_attr_search_ctx(attr_search_context **ctx, ntfs_inode *ni,
+		MFT_RECORD *mrec);
+extern void put_attr_search_ctx(attr_search_context *ctx);
+
+#endif /* _LINUX_NTFS_ATTRIB_H */
+

fs/ntfs/debug.c

+/*
+ * debug.c - NTFS kernel debug support. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001,2002 Anton Altaparmakov.
+ *
+ * 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
+ */
+
+#include "debug.h"
+
+/*
+ * A static buffer to hold the error string being displayed and a spinlock
+ * to protect concurrent accesses to it.
+ */
+static char err_buf[1024];
+static spinlock_t err_buf_lock = SPIN_LOCK_UNLOCKED;
+
+/**
+ * __ntfs_warning - output a warning to the syslog
+ * @function:	name of function outputting the warning
+ * @sb:		super block of mounted ntfs filesystem
+ * @fmt:	warning string containing format specifications
+ * @...:	a variable number of arguments specified in @fmt
+ *
+ * Outputs a warning to the syslog for the mounted ntfs filesystem described
+ * by @sb.
+ *
+ * @fmt and the corresponding @... is printf style format string containing
+ * the warning string and the corresponding format arguments, respectively.
+ *
+ * @function is the name of the function from which __ntfs_warning is being
+ * called.
+ *
+ * Note, you should be using debug.h::ntfs_warning(@sb, @fmt, @...) instead
+ * as this provides the @function parameter automatically.
+ */
+void __ntfs_warning(const char *function, const struct super_block *sb,
+		const char *fmt, ...)
+{
+	va_list args;
+	int flen = 0;
+
+	if (function)
+		flen = strlen(function);
+	spin_lock(&err_buf_lock);
+	va_start(args, fmt);
+	vsnprintf(err_buf, sizeof(err_buf), fmt, args);
+	va_end(args);
+	if (sb)
+		printk(KERN_ERR "NTFS-fs warning (device %s): %s(): %s\n",
+				sb->s_id, flen ? function : "", err_buf);
+	else
+		printk(KERN_ERR "NTFS-fs warning: %s(): %s\n",
+				flen ? function : "", err_buf);
+	spin_unlock(&err_buf_lock);
+}
+
+/**
+ * __ntfs_error - output an error to the syslog
+ * @function:	name of function outputting the error
+ * @sb:		super block of mounted ntfs filesystem
+ * @fmt:	error string containing format specifications
+ * @...:	a variable number of arguments specified in @fmt
+ *
+ * Outputs an error to the syslog for the mounted ntfs filesystem described
+ * by @sb.
+ *
+ * @fmt and the corresponding @... is printf style format string containing
+ * the error string and the corresponding format arguments, respectively.
+ *
+ * @function is the name of the function from which __ntfs_error is being
+ * called.
+ *
+ * Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead
+ * as this provides the @function parameter automatically.
+ */
+void __ntfs_error(const char *function, const struct super_block *sb,
+		const char *fmt, ...)
+{
+	va_list args;
+	int flen = 0;
+
+	if (function)
+		flen = strlen(function);
+	spin_lock(&err_buf_lock);
+	va_start(args, fmt);
+	vsnprintf(err_buf, sizeof(err_buf), fmt, args);
+	va_end(args);
+	if (sb)
+		printk(KERN_ERR "NTFS-fs error (device %s): %s(): %s\n",
+				sb->s_id, flen ? function : "", err_buf);
+	else
+		printk(KERN_ERR "NTFS-fs error: %s(): %s\n",
+				flen ? function : "", err_buf);
+	spin_unlock(&err_buf_lock);
+}
+
+#ifdef DEBUG
+
+/* If 1, output debug messages, and if 0, don't. */
+int debug_msgs = 0;
+
+void __ntfs_debug (const char *file, int line, const char *function,
+		const char *fmt, ...)
+{
+	va_list args;
+	int flen = 0;
+
+	if (!debug_msgs)
+		return;
+	if (function)
+		flen = strlen(function);
+	spin_lock(&err_buf_lock);
+	va_start(args, fmt);
+	vsnprintf(err_buf, sizeof(err_buf), fmt, args);
+	va_end(args);
+	printk(KERN_DEBUG "NTFS-fs DEBUG (%s, %d): %s: %s\n",
+		file, line, flen ? function : "", err_buf);
+	spin_unlock(&err_buf_lock);
+}
+
+/* Dump a run list. Caller has to provide synchronisation for @rl. */
+void ntfs_debug_dump_runlist(const run_list_element *rl)
+{
+	int i;
+	const char *lcn_str[5] = { "LCN_HOLE         ", "LCN_RL_NOT_MAPPED",
+				   "LCN_ENOENT       ", "LCN_EINVAL       ",
+				   "LCN_unknown      " };
+
+	if (!debug_msgs)
+		return;
+	printk(KERN_DEBUG "NTFS-fs DEBUG: Dumping run list (values "
+			"in hex):\n");
+	if (!rl) {
+		printk(KERN_DEBUG "Run list not present.\n");
+		return;
+	}
+	printk(KERN_DEBUG "VCN              LCN               Run length\n");
+	for (i = 0; ; i++) {
+		LCN lcn = (rl + i)->lcn;
+
+		if (lcn < (LCN)0) {
+			int index = -lcn - 1;
+
+			if (index > -LCN_EINVAL - 1)
+				index = 4;
+			printk(KERN_DEBUG "%-16Lx %s %-16Lx%s\n",
+				(rl + i)->vcn, lcn_str[index],
+				(rl + i)->length, (rl + i)->length ?
+				"" : " (run list end)");
+		} else
+			printk(KERN_DEBUG "%-16Lx %-16Lx  %-16Lx%s\n",
+				(rl + i)->vcn, (rl + i)->lcn,
+				(rl + i)->length, (rl + i)->length ?
+				"" : " (run list end)");
+		if (!(rl + i)->length)
+			break;
+	}
+}
+
+#endif
+

fs/ntfs/debug.h

+/*
+ * debug.h - NTFS kernel debug support. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001,2002 Anton Altaparmakov.
+ *
+ * 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_DEBUG_H
+#define _LINUX_NTFS_DEBUG_H
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+#include <linux/fs.h>
+
+#include "inode.h"
+#include "attrib.h"
+
+#ifdef DEBUG
+
+extern int debug_msgs;
+
+#if 0 /* Fool kernel-doc since it doesn't do macros yet */
+/**
+ * ntfs_debug - write a debug level message to syslog
+ * @f:		a printf format string containing the message
+ * @...:	the variables to substitute into @f
+ *
+ * ntfs_debug() writes a DEBUG level message to the syslog but only if the
+ * driver was compiled with -DDEBUG. Otherwise, the call turns into a NOP.
+ */
+static void ntfs_debug(const char *f, ...);
+#endif
+
+extern void __ntfs_debug (const char *file, int line, const char *function,
+	const char *format, ...) __attribute__ ((format (printf, 4, 5)));
+#define ntfs_debug(f, a...)						\
+	__ntfs_debug(__FILE__, __LINE__, __FUNCTION__, f, ##a)
+
+extern void ntfs_debug_dump_runlist(const run_list_element *rl);
+
+#else	/* !DEBUG */
+
+#define ntfs_debug(f, a...)		do {} while (0)
+#define ntfs_debug_dump_runlist(rl)	do {} while (0)
+
+#endif	/* !DEBUG */
+
+extern void __ntfs_warning(const char *function, const struct super_block *sb,
+		const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
+#define ntfs_warning(sb, f, a...)	__ntfs_warning(__FUNCTION__, sb, f, ##a)
+
+extern void __ntfs_error(const char *function, const struct super_block *sb,
+		const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
+#define ntfs_error(sb, f, a...)		__ntfs_error(__FUNCTION__, sb, f, ##a)
+
+#endif /* _LINUX_NTFS_DEBUG_H */
+

fs/ntfs/endian.h

+/*
+ * endian.h - Defines for endianness handling in NTFS Linux kernel driver.
+ *	      Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001 Anton Altaparmakov.
+ *
+ * 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_ENDIAN_H
+#define _LINUX_NTFS_ENDIAN_H
+
+#include <asm/byteorder.h>
+
+/*
+ * Signed endianness conversion defines.
+ */
+#define sle16_to_cpu(x)		((s16)__le16_to_cpu((s16)(x)))
+#define sle32_to_cpu(x)		((s32)__le32_to_cpu((s32)(x)))
+#define sle64_to_cpu(x)		((s64)__le64_to_cpu((s64)(x)))
+
+#define sle16_to_cpup(x)	((s16)__le16_to_cpu(*(s16*)(x)))
+#define sle32_to_cpup(x)	((s32)__le32_to_cpu(*(s32*)(x)))
+#define sle64_to_cpup(x)	((s64)__le64_to_cpu(*(s64*)(x)))
+
+#define cpu_to_sle16(x)		((s16)__cpu_to_le16((s16)(x)))
+#define cpu_to_sle32(x)		((s32)__cpu_to_le32((s32)(x)))
+#define cpu_to_sle64(x)		((s64)__cpu_to_le64((s64)(x)))
+
+#define cpu_to_sle16p(x)	((s16)__cpu_to_le16(*(s16*)(x)))
+#define cpu_to_sle32p(x)	((s32)__cpu_to_le32(*(s32*)(x)))
+#define cpu_to_sle64p(x)	((s64)__cpu_to_le64(*(s64*)(x)))
+
+#endif /* _LINUX_NTFS_ENDIAN_H */
+

kernel/ksyms.c

@@ -165,7 +165,8 @@ EXPORT_SYMBOL(d_alloc);
 EXPORT_SYMBOL(d_lookup);
 EXPORT_SYMBOL(__d_path);
 EXPORT_SYMBOL(mark_buffer_dirty);
-EXPORT_SYMBOL(set_buffer_async_io); /* for reiserfs_writepage */
+EXPORT_SYMBOL(end_buffer_io_sync);
+EXPORT_SYMBOL(set_buffer_async_io);
 EXPORT_SYMBOL(__mark_buffer_dirty);
 EXPORT_SYMBOL(__mark_inode_dirty);
 EXPORT_SYMBOL(get_empty_filp);