Initial check in of cifs filesystem version 0.54 for Linux 2.5 (to clean tree as one changeset)

Documentation/filesystems/00-INDEX

@@ -8,6 +8,8 @@ affs.txt
 	- info and mount options for the Amiga Fast File System.
 bfs.txt
 	- info for the SCO UnixWare Boot Filesystem (BFS).
+cifs.txt
+	- description of the CIFS filesystem
 coda.txt
 	- description of the CODA filesystem.
 cramfs.txt

Documentation/filesystems/cifs.txt

+This module, cifs, is a filesystem that implements the SMB/CIFS protocol, which is the
+protocol used by Windows based operating systems (including Windows 2000 and its successors)
+as well as Samba, OS/2 and many others operating systems and network file server appliances.
+The Cifs VFS filesystem module is designed to work well with servers that implement the newer versions
+(dialects) of the SMB/CIFS protocol such as Samba, the program written by Andrew Tridgell
+that turns any Unix host into a file server for DOS or Windows clients, as well as Windows NT,
+Windows 2000 and its successors.  It is not designed to handle older smb servers well, those that
+implement older versions of the dialect (such as OS/2 or Windows 95), for this purpose use smbfs.  
+
+This module can support mounting without a mount helper program.  The mount syntax is:
+        mount //server_ip_address/share_name  /mnt -o user=username,password=your_password
+where "username", "your_password" and "server_ip_address" and "share_name" should be replaced
+with specific values (supplied by the user) e.g.  
+	mount //9.53.216.16/public /mnt -o user=jsmith,password=openup  
+
+This cifs implementation is designed to handle network caching (safely) as well as to implement locking,
+large file (64 bit access), distributed file system ("dfs") and other advanced protocol features. It
+also implements the SNIA standard for Unix extensions to CIFS (when communicating with servers such as
+Samba 2.2.3 or later which support it).
+
+For more information contact sfrench@us.ibm.com
+
+Cifs is an SMB client (or gateway). For more info on the SMB/CIFS protocol and Samba, including
+documentation, please go to http://www.samba.org/ and then on to your nearest mirror.  For more
+information about the cifs vfs, go to the project page at:
+	http://us1.samba.org/samba/Linux_CIFS_client.html

fs/Config.help

@@ -950,6 +950,33 @@ CONFIG_VXFS_FS
   module, say M here and read <file:Documentation/modules.txt>.  If
   unsure, say N.
 
+CIFS (Common Internet File System) support
+CONFIG_CIFS
+  This is the client VFS module for the Common Internet File System
+  (CIFS) protocol which is the successor to the Server Message Block 
+  (SMB) protocol, the native file sharing mechanism for most early
+  PC operating systems.  CIFS is fully supported by current network
+  file servers such as Windows 2000 (including Windows NT version 4 
+  and Windows XP) as well by Samba (which provides excellent CIFS
+  server support for Linux and many other operating systems).  For
+  production systems the smbfs module may be used instead of this
+  cifs module since smbfs is currently more stable and provides
+  support for older servers.  The intent of this module is to provide the
+  most advanced network file system function for CIFS compliant servers, 
+  including support for dfs (heirarchical name space), secure per-user
+  session establishment, safe distributed caching (oplock), optional
+  packet signing, Unicode and other internationalization improvements, and
+  optional Winbind (nsswitch) integration.  This module is in an early
+  development stage, so unless you are specifically interested in this
+  filesystem, just say N.
+
+CIFS Debugging
+CONFIG_CIFS_DEBUG
+  If you are experiencing any problems with the CIFS filesystem, say
+  Y here.  This will result in additional debugging messages to be
+  written to the system log.  Under normal circumstances, this
+  results in very little overhead.  
+
 CONFIG_SMB_FS
   SMB (Server Message Block) is the protocol Windows for Workgroups
   (WfW), Windows 95/98, Windows NT and OS/2 Lan Manager use to share

fs/Config.in

@@ -140,6 +140,8 @@ if [ "$CONFIG_NET" = "y" ]; then
    fi
    define_tristate CONFIG_EXPORTFS $CONFIG_NFSD
 
+   dep_tristate 'CIFS support (advanced network filesystem for Samba, Window and other CIFS compliant servers)(EXPERIMENTAL)' CONFIG_CIFS $CONFIG_INET
+
    dep_tristate 'SMB file system support (to mount Windows shares etc.)' CONFIG_SMB_FS $CONFIG_INET
    if [ "$CONFIG_SMB_FS" != "n" ]; then
       bool '  Use a default NLS' CONFIG_SMB_NLS_DEFAULT

fs/Makefile

@@ -65,6 +65,7 @@ obj-$(CONFIG_LOCKD)		+= lockd/
 obj-$(CONFIG_NLS)		+= nls/
 obj-$(CONFIG_SYSV_FS)		+= sysv/
 obj-$(CONFIG_SMB_FS)		+= smbfs/
+obj-$(CONFIG_CIFS)             += cifs/
 obj-$(CONFIG_NCP_FS)		+= ncpfs/
 obj-$(CONFIG_HPFS_FS)		+= hpfs/
 obj-$(CONFIG_NTFS_FS)		+= ntfs/

fs/cifs/AUTHORS

+Original Author
+===============
+Steve French (sfrench@samba.org)
+
+The author wishes to express his appreciation and thanks to:
+Andrew Tridgell (Samba team) for his early suggestions about smb/cifs VFS
+improvements. Thanks to IBM for allowing me the time and test resources to pursue
+this project. Jim McDonough from IBM (and the Samba Team) for his help.
+The IBM Linux JFS team for explaining many esoteric Linux filesystem features.
+Dave Boutcher of IBM Rochester (author of the OS/400 smb/cifs filesystem client)
+for proving years ago that a very good smb/cifs client could be done on a Unix like 
+operating system.  Volker Lendecke, Andrew Tridgell, Urban Widmark, John Newbigin 
+and others for their work on the Linux smbfs module over the years. Thanks to
+the other members of the Storage Network Industry Association CIFS Technical
+Workgroup for their work specifying this highly complex protocol and finally
+thanks to the Samba team for their technical advice and encouragement.

fs/cifs/CHANGES

+Version 0.54
+------------
+Fix problem with captive thread hanging around at unmount time.  Adjust to 2.5.42-pre
+changes to superblock layout.   Remove wasteful allocation of smb buffers (now the send 
+buffer is reused for responses).  Add more oplock handling. Additional minor cleanup.
+
+Version 0.53
+------------
+More stylistic updates to better match kernel style.  Add additional statistics
+for filesystem which can be viewed via /proc/fs/cifs.  Add more pieces of NTLMv2
+and CIFS Packet Signing enablement.
+
+Version 0.52
+------------
+Replace call to sleep_on with safer wait_on_event.
+Make stylistic changes to better match kernel style recommendations.
+Remove most typedef usage (except for the PDUs themselves).
+
+Version 0.51
+------------
+Update mount so the -unc mount option is no longer required (the ip address can be specified
+in a UNC style device name.   Implementation of readpage/writepage started.
+
+Version 0.50
+------------
+Fix intermittent problem with incorrect smb header checking on badly 
+fragmented tcp responses
+
+Version 0.49
+------------
+Fixes to setting of allocation size and file size.
+
+Version 0.48
+------------
+Various 2.5.38 fixes.  Now works on 2.5.38
+
+Version 0.47
+------------
+Prepare for 2.5 kernel merge.  Remove ifdefs.
+
+Version 0.46
+------------
+Socket buffer management fixes.  Fix dual free.
+
+Version 0.45
+------------
+Various big endian fixes for hardlinks and symlinks and also for dfs.
+
+Version 0.44
+------------
+Various big endian fixes for servers with Unix extensions such as Samba
+
+Version 0.43
+------------
+Various FindNext fixes for incorrect filenames on large directory searches on big endian
+clients.  basic posix file i/o tests now work on big endian machines, not just le
+
+Version 0.42
+------------
+SessionSetup and NegotiateProtocol now work from Big Endian machines.
+Various Big Endian fixes found during testing on the Linux on 390.  Various fixes for compatability with older
+versions of 2.4 kernel (now builds and works again on kernels at least as early as 2.4.7).
+
+Version 0.41
+------------
+Various minor fixes for Connectathon Posix "basic" file i/o test suite.  Directory caching fixed so hardlinked
+files now return the correct rumber of links on fstat as they are repeatedly linked and unlinked.
+
+Version 0.40
+------------
+Implemented "Raw" (i.e. not encapsulated in SPNEGO) NTLMSSP (i.e. the Security Provider Interface used to negotiate
+session advanced session authentication).  Raw NTLMSSP is preferred by Windows 2000 Professional and Windows XP.
+Began implementing support for SPNEGO encapsulation of NTLMSSP based session authentication blobs
+(which is the mechanism preferred by Windows 2000 server in the absence of Kerberos).
+
+Version 0.38
+------------
+Introduced optional mount helper utility mount.cifs and made coreq changes to cifs vfs to enable
+it. Fixed a few bugs in the DFS code (e.g. bcc two bytes too short and incorrect uid in PDU).
+
+Version 0.37
+------------
+Rewrote much of connection and mount/unmount logic to handle bugs with
+multiple uses to same share, multiple users to same server etc.
+
+Version 0.36
+------------
+Fixed major problem with dentry corruption (missing call to dput)
+
+Version 0.35
+------------
+Rewrite of readdir code to fix bug. Various fixes for bigendian machines.
+Begin adding oplock support.  Multiusermount and oplockEnabled flags added to /proc/fs/cifs
+although corresponding function not fully implemented in the vfs yet
+
+Version 0.34
+------------
+Fixed dentry caching bug, misc. cleanup 
+
+Version 0.33
+------------
+Fixed 2.5 support to handle build and configure changes as well as misc. 2.5 changes.  Now can build
+on current 2.5 beta version (2.5.24) of the Linux kernel as well as on 2.4 Linux kernels.
+Support for STATUS codes (newer 32 bit NT error codes) added.  DFS support begun to be added.
+
+Version 0.32
+------------
+Unix extensions (symlink, readlink, hardlink, chmod and some chgrp and chown) implemented
+and tested against Samba 2.2.5
+
+
+Version 0.31
+------------
+1) Fixed lockrange to be correct (it was one byte too short)
+
+2) Fixed GETLK (i.e. the fcntl call to test a range of bytes in a file to see if locked) to correctly 
+show range as locked when there is a conflict with an existing lock.
+
+3) default file perms are now 2767 (indicating support for mandatory locks) instead of 777 for directories
+in most cases.  Eventually will offer optional ability to query server for the correct perms.
+
+3) Fixed eventual trap when mounting twice to different shares on the same server when the first succeeded 
+but the second one was invalid and failed (the second one was incorrectly disconnecting the tcp and smb
+session) 
+
+4) Fixed error logging of valid mount options
+
+5) Removed logging of password field.
+
+6) Moved negotiate, treeDisconnect and uloggoffX (only tConx and SessSetup remain in connect.c) to cifssmb.c
+and cleaned them up and made them more consistent with other cifs functions. 
+
+7) Server support for Unix extensions is now fully detected and FindFirst is implemented both ways 
+(with or without Unix exentions) but FindNext and QueryPathInfo with the Unix extensions are not completed,
+nor is the symlink support using the Unix extensions
+
+8) Started adding the readlink and follow_link code 
+
+Version 0.3 
+-----------
+Initial drop
+

fs/cifs/Makefile

+#
+# Makefile for Linux CIFS VFS client 
+#
+obj-$(CONFIG_CIFS) += cifs.o
+
+cifs-objs := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o link.o misc.o netmisc.o smbdes.o smbencrypt.o transport.o asn1.o md4.o md5.o cifs_unicode.o nterr.o
+
+include $(TOPDIR)/Rules.make

fs/cifs/README

+This is the CIFS VFS support for Linux.  It supports many advanced network filesystem
+features such as heirarchical dfs like filesystem, hardlinks, locking and more.
+It was designed to comply with the SNIA CIFS Technical Reference (which supersedes
+the 1992 X/Open SMB Standard) as well as to perform best practice practical
+interoperability with Windows 2000, Windows XP, Samba and equivalent 
+servers.  
+
+For questions or bug reports please contact sfrench@samba.org (sfrench@us.ibm.com)
+
+Build instructions:
+==================
+extract the kernel from http://www.cifs.bkbits.net/linux-2.5 or 
+http://www.cifs.bkbits.net/linux-2.4  
+make menuconfig (or make xconfig)
+select cifs from within the network filesystem choices
+save and exit
+make dep
+make modules  (or "make" if you did not select CIFS VFS to be built as a module)
+
+Installation instructions:
+=========================
+If you have built the CIFS vfs as module (successfully)you
+simply type "make modules_install" (or if you prefer manually copy the file to
+the modules directory e.g. /lib/modules/2.4.10-4GB/kernel/fs/cifs/cifs.o).
+
+If you have built the CIFS vfs into the kernel itself, follow the instructions
+for your distribution on how to install a new kernel (usually you
+would simply type "make install").
+
+If you do not have the utility mount.cifs (in the Samba 3.0 source tree and on the
+CIFS VFS web site) copy it to the directory /sbin (or the same directory in which 
+mount.smbfs resides).  Although no helper software is required, the installation
+of mount.cifs is recommended.  Eventually the Samba 3.0 utility program "net" 
+may also be helpful since it may someday provide easier mount syntax for users used 
+to Windows e.g.
+	 net use <mount point> <UNC name or cifs URL> 	 
+and there will likely be other helper programs available ala smbmount to provide
+additional optional function in the future.  Note that running Winbind on all
+of your Linux clients is useful in mapping Uids and Gids consistently to the
+proper network user.	
+
+Samba Considerations
+====================
+To get the maximum benefit from the CIFS VFS, we recommend using a server that
+supports the SNIA CIFS Unix Extensions standard (e.g. Samba 2.2.5 or Samba 3.0)
+but the CIFS vfs works fine with a wide variety of CIFS servers.  Note that the
+uid, gid and file permissions will display default values if you do not have
+a server that supports the Unix extensions for CIFS (such as Samba 2.2.3 or
+later).   To enable the Unix CIFS Extensions in the Samba server, add the line:
+	unix extensions = yes
+to your smb.conf file on the server.  Note that the following smb.conf settings are
+also useful (on the Samba server) when the majority of clients are Unix
+or Linux:
+	case sensitive = yes
+	delete readonly = yes
+Some administrators also change the "map archive" and the "create mask" parameters
+from their defaults. For more information on these see the manual pages 
+("man smb.conf") on the Samba server system.  Note that the cifs vfs, unlike the
+smbfs vfs, does not read the smb.conf on the client system (the few optional settings
+are passed in on mount via -o parameters instead).
+
+Use instructions:
+================
+Once the CIFS VFS support is built into the kernel or installed as a module (cifs.o),
+you can use mount syntax like the following to access Samba or Windows servers:
+  mount -t cifs //9.53.216.11/e$ /mnt -o user=myname,pass=mypassword
+after -o the following cifs vfs specific options are supported:
+  user=<username>
+  pass=<password>
+  domain=<domain name>
+TCP names (in addition to ip addresses) will be available when the mount helper
+(mount.cifs) is complete
+
+Restrictions
+============
+Servers must support the NTLM SMB dialect (which is the most recent, supported by Samba
+and Windows NT, 2000 and XP and many other SMB/CIFS servers) and servers must support
+either "pure-TCP" (port 445 TCP/IP CIFS connections) or RFC 1001/1002 support for
+"Netbios-Over-TCP/IP."  Neither of these is likely to be a problem as most servers
+support this.  IPv6 support is planned for the future.
+
+Misc /proc/fs/cifs Flags and Debug Info
+=======================================
+Various experimental features and tracing can be enabled by changing flags in /proc/fs/cifs (after
+the cifs module has been installed or built into the kernel, e.g. insmod cifs).  To enable
+a feature you can set it to 1 e.g. to enable tracing to the kernel message log you can do
+"echo 1 > /proc/fs/cifs/cifsFYI" and "echo 1 > /proc/fs/cifs/traceSMB"
+Also note that "cat /proc/fs/cifs/DebugData" will display some information about the currently
+active sessions and the shares that are mounted. Currently the ntlmv2 enablement and packet
+signing will not work since they the implementation is not quite complete, so do not enable
+these flags unless you are doing specific testing.  Enabling extended security works to
+Windows 2000 Workstations and XP but not to Windows 2000 server or Samba since it does not
+usually send "raw NTLMSSP" (instead it sends NTLMSSP encapsulated in SPNEGO/GSSAPI, which
+support is not complete in the CIFS VFS yet).

fs/cifs/TODO

+version 0.5.3 October 8th, 2002
+
+A Partial List of Known Problems and Missing Features
+=====================================================
+
+Contributions are welcome.  There are plenty of opportunities
+for visible, important contributions to this module.  Here
+is a partial list of the known problems and missing features:
+
+a) Support for SecurityDescriptors for chmod/chgrp/chown
+
+b) Better pam/winbind integration
+
+c) multi-user mounts - multiplexed sessionsetups over single vc
+(ie tcp session) - prettying up needed
+
+d) Kerberos/SPNEGO session setup support - (started)
+
+e)NTLMv2 authentication and MD5-HMAC signing of SMB PDUs - (mostly implemented)
+
+f) oplock support (ie safe CIFS distributed file caching) is not complete.
+In addition Directory entry caching relies on a 1 second timer, rather than 
+using FindNotify or equivalent.  - (started)
+
+g) There may be a few additional changes that could be done to take advantage
+of recent 2.5 kernel improvements in byte-range locking
+
+h) quota support
+
+i) support for the Linux 2.5 kernel new feature get_xattr and set_xattr
+
+j) finish off the mount helper, mount.cifs - (started)
+
+k) support for memory mapped files only partially works until support for
+MS_INVALIDATE implemented.  readpage and writepage code not finished (started)
+
+KNOWN BUGS (updated October 8nd, 2002)
+====================================
+1) symbolic links (Windows reparse points) are recognized but
+can not be created remotely. They are implemented for Samba and those that
+support the CIFS Unix extensions but Samba has a bug currently handling
+symlink text beginning with slash
+2) delete of file with read-only attribute set will fail (may be ok)
+3) autoreconnection logic is only partially complete.
+
+Misc testing to do
+=================
+1) check out max path names and max path name components against various server
+types.
+
+2) Run POSIX bencharks against cifs
+
+3) Run dbench
+
+4) Finish FSX testing on SMP now that we workaround the Samba bug

fs/cifs/cifs_debug.h

+/*
+ *
+ *   Copyright (c) International Business Machines  Corp., 2000,2002
+ *   Modified by Steve French (sfrench@us.ibm.com)
+ *
+ *   This program 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 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;  if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+*/
+#define CIFS_DEBUG		/* BB temporary */
+
+#ifndef _H_CIFS_DEBUG
+#define _H_CIFS_DEBUG
+
+void dump_mem(char *label, void *data, int length);
+extern int traceSMB;		/* flag which enables the function below */
+void dump_smb(struct smb_hdr *, int);
+
+/*
+ *	debug ON
+ *	--------
+ */
+#ifdef CIFS_DEBUG
+
+/* information message: e.g., configuration, major event */
+extern int cifsFYI;
+#define cFYI(button,prspec)\
+{ if (button && cifsFYI) printk prspec; }
+
+/* debug event message: */
+#define cEVENT(button,prspec)\
+{ if (button) printk prspec; }
+
+/* error event message: e.g., i/o error */
+extern int cifsERROR;
+#define cERROR(button, prspec)\
+{ if (button && cifsERROR) { printk prspec; if (button > 1) BUG(); } }
+
+/*
+ *	debug OFF
+ *	---------
+ */
+#else				/* _CIFS_DEBUG */
+#define cERROR(button,prspec)
+#define cEVENT(button,prspec)
+#define cFYI(button, prspec)
+#endif				/* _CIFS_DEBUG */
+
+/*
+ *	statistics
+ *	----------
+ */
+#ifdef	_CIFS_STATISTICS
+#define	INCREMENT(x)	((x)++)
+#define	DECREMENT(x)	((x)--)
+#define	HIGHWATERMARK(x,y)	x = MAX((x), (y))
+#else
+#define	INCREMENT(x)
+#define	DECREMENT(x)
+#define	HIGHWATERMARK(x,y)
+#endif				/* _CIFS_STATISTICS */
+
+#endif				/* _H_CIFS_DEBUG */

fs/cifs/cifs_fs_sb.h

+/*
+ *   fs/cifs/cifs_fs_sb.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   This library is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License as published
+ *   by the Free Software Foundation; either version 2.1 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This library 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 Lesser General Public License for more details.
+ *
+ */
+#ifndef _CIFS_FS_SB_H
+#define _CIFS_FS_SB_H
+
+struct cifs_sb_info {
+	struct cifsTconInfo *tcon;	/* primary mount */
+	/* list of implicit mounts beneath this mount point - needed in dfs case */
+	struct list_head nested_tcon_q;
+	struct nls_table *local_nls;
+};
+#endif				/* _CIFS_FS_SB_H */

fs/cifs/cifs_unicode.c

+/*
+ *   fs/cifs/cifs_unicode.c
+ *
+ *   Copyright (c) International Business Machines  Corp., 2000,2002
+ *   Modified by Steve French (sfrench@us.ibm.com)
+ *
+ *   This program 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 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;  if not, write to the Free Software 
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/fs.h>
+#include "cifs_unicode.h"
+#include "cifs_uniupr.h"
+#include "cifspdu.h"
+#include "cifs_debug.h"
+
+/*
+ * NAME:	toUpper()
+ *
+ * FUNCTION:	Upper case ASCII string (in place) using the current codepage
+ *
+ */
+
+void
+toUpper(const struct nls_table *n, char *mixed_string)
+{
+	int i;
+	char temp;
+
+	for (i = 0; i < strlen(mixed_string); i++) {
+		temp = mixed_string[i];
+		mixed_string[i] = n->charset2upper[(int) temp];
+	}
+}
+
+/*
+ * NAME:	cifs_strfromUCS()
+ *
+ * FUNCTION:	Convert little-endian unicode string to character string
+ *
+ */
+int
+cifs_strfromUCS_le(char *to, const wchar_t * from,	/* LITTLE ENDIAN */
+		   int len, const struct nls_table *codepage)
+{
+	int i;
+	int outlen = 0;
+
+	for (i = 0; (i < len) && from[i]; i++) {
+		int charlen;
+		/* 2.4.0 kernel or greater */
+		charlen =
+		    codepage->uni2char(le16_to_cpu(from[i]), &to[outlen],
+				       NLS_MAX_CHARSET_SIZE);
+		if (charlen > 0) {
+			outlen += charlen;
+		} else {
+			to[outlen++] = '?';
+		}
+	}
+	to[outlen] = 0;
+	cEVENT(0, ("cifs_strfromUCS returning %d - '%s'\n", outlen, to));
+	return outlen;
+}
+
+/*
+ * NAME:	cifs_strtoUCS()
+ *
+ * FUNCTION:	Convert character string to unicode string
+ *
+ */
+int
+cifs_strtoUCS(wchar_t * to, const char *from, int len,
+	      const struct nls_table *codepage)
+{
+	int charlen;
+	int i;
+
+	cEVENT(0, ("cifs_strtoUCS - '%s'\n", from));
+
+	for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
+
+		/* works for 2.4.0 kernel or later */
+		charlen = codepage->char2uni(from, len, &to[i]);
+		if (charlen < 1) {
+			cERROR(1,
+			       ("cifs_strtoUCS: char2uni returned %d.\n",
+				charlen));
+			to[i] = cpu_to_le16(0x003f);	/* a question mark */
+			charlen = 1;
+		}
+		to[i] = cpu_to_le16(to[i]);
+
+	}
+
+	cEVENT(0, (" returning %d\n", i));
+
+	to[i] = 0;
+	return i;
+}
+
+/*
+ * NAME:	get_UCSname2()
+ *
+ * FUNCTION:	Allocate and translate to unicode string
+ *
+ */
+/*int
+get_UCSname2(struct component_name *uniName, struct dentry *dentry,
+	    struct nls_table *nls_tab)
+{
+	int length = dentry->d_name.len;
+
+	if (length > 255)
+		return ENAMETOOLONG;
+
+	uniName->name = kmalloc((length + 1) * sizeof (wchar_t), GFP_KERNEL);
+
+	if (uniName->name == NULL)
+		return ENOSPC;
+
+	uniName->namlen = cifs_strtoUCS(uniName->name, dentry->d_name.name,
+					length, nls_tab);
+
+	return 0;
+} */

fs/cifs/cifs_unicode.h

+/*
+ * cifs_unicode:  Unicode kernel case support
+ *
+ * Function:
+ *     Convert a unicode character to upper or lower case using
+ *     compressed tables.
+ *
+ *   Copyright (c) International Business Machines  Corp., 2000,2002
+ *
+ *   This program 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 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;  if not, write to the Free Software 
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * Notes:
+ *     These APIs are based on the C library functions.  The semantics
+ *     should match the C functions but with expanded size operands.
+ *
+ *     The upper/lower functions are based on a table created by mkupr.
+ *     This is a compressed table of upper and lower case conversion.
+ *
+ */
+
+#include <asm/byteorder.h>
+#include <linux/types.h>
+#include <linux/nls.h>
+
+#define  UNIUPR_NOLOWER		/* Example to not expand lower case tables */
+
+/* Just define what we want from uniupr.h.  We don't want to define the tables
+ * in each source file.
+ */
+#ifndef	UNICASERANGE_DEFINED
+struct UniCaseRange {
+	wchar_t start;
+	wchar_t end;
+	signed char *table;
+};
+#endif				/* UNICASERANGE_DEFINED */
+
+#ifndef UNIUPR_NOUPPER
+extern signed char CifsUniUpperTable[512];
+extern const struct UniCaseRange CifsUniUpperRange[];
+#endif				/* UNIUPR_NOUPPER */
+
+#ifndef UNIUPR_NOLOWER
+extern signed char UniLowerTable[512];
+extern struct UniCaseRange UniLowerRange[];
+#endif				/* UNIUPR_NOLOWER */
+
+/*
+ *      directory entry argument
+ */
+struct component_name {
+	int namlen;
+	wchar_t *name;
+};
+
+#ifdef __KERNEL__
+int cifs_strfromUCS_le(char *, const wchar_t *, int, const struct nls_table *);
+int cifs_strtoUCS(wchar_t *, const char *, int, const struct nls_table *);
+
+int cifs_UCSname(struct component_name *, struct dentry *,
+		 const struct nls_table *);
+
+void toUpper(const struct nls_table *, char *);
+#endif
+
+#define free_UCSname(COMP) kfree((COMP)->name)
+
+/*
+ * UniStrcat:  Concatenate the second string to the first
+ *
+ * Returns:
+ *     Address of the first string
+ */
+static inline wchar_t *
+UniStrcat(wchar_t * ucs1, const wchar_t * ucs2)
+{
+	wchar_t *anchor = ucs1;	/* save a pointer to start of ucs1 */
+
+	while (*ucs1++) ;	/* To end of first string */
+	ucs1--;			/* Return to the null */
+	while ((*ucs1++ = *ucs2++)) ;	/* copy string 2 over */
+	return anchor;
+}
+
+/*
+ * UniStrchr:  Find a character in a string
+ *
+ * Returns:
+ *     Address of first occurance of character in string
+ *     or NULL if the character is not in the string
+ */
+static inline wchar_t *
+UniStrchr(const wchar_t * ucs, wchar_t uc)
+{
+	while ((*ucs != uc) && *ucs)
+		ucs++;
+
+	if (*ucs == uc)
+		return (wchar_t *) ucs;
+	return NULL;
+}
+
+/*
+ * UniStrcmp:  Compare two strings
+ *
+ * Returns:
+ *     < 0:  First string is less than second
+ *     = 0:  Strings are equal
+ *     > 0:  First string is greater than second
+ */
+static inline int
+UniStrcmp(const wchar_t * ucs1, const wchar_t * ucs2)
+{
+	while ((*ucs1 == *ucs2) && *ucs1) {
+		ucs1++;
+		ucs2++;
+	}
+	return (int) *ucs1 - (int) *ucs2;
+}
+
+/*
+ * UniStrcpy:  Copy a string
+ */
+static inline wchar_t *
+UniStrcpy(wchar_t * ucs1, const wchar_t * ucs2)
+{
+	wchar_t *anchor = ucs1;	/* save the start of result string */
+
+	while ((*ucs1++ = *ucs2++)) ;
+	return anchor;
+}
+
+/*
+ * UniStrlen:  Return the length of a string (in 16 bit Unicode chars not bytes)
+ */
+static inline size_t
+UniStrlen(const wchar_t * ucs1)
+{
+	int i = 0;
+
+	while (*ucs1++)
+		i++;
+	return i;
+}
+
+/*
+ * UniStrnlen:  Return the length (in 16 bit Unicode chars not bytes) of a string (length limited)
+ */
+static inline size_t
+UniStrnlen(const wchar_t * ucs1, int maxlen)
+{
+	int i = 0;
+
+	while (*ucs1++) {
+		i++;
+		if (i >= maxlen)
+			break;
+	}
+	return i;
+}
+
+/*
+ * UniStrncat:  Concatenate length limited string
+ */
+static inline wchar_t *
+UniStrncat(wchar_t * ucs1, const wchar_t * ucs2, size_t n)
+{
+	wchar_t *anchor = ucs1;	/* save pointer to string 1 */
+
+	while (*ucs1++) ;
+	ucs1--;			/* point to null terminator of s1 */
+	while (n-- && (*ucs1 = *ucs2)) {	/* copy s2 after s1 */
+		ucs1++;
+		ucs2++;
+	}
+	*ucs1 = 0;		/* Null terminate the result */
+	return (anchor);
+}
+
+/*
+ * UniStrncmp:  Compare length limited string
+ */
+static inline int
+UniStrncmp(const wchar_t * ucs1, const wchar_t * ucs2, size_t n)
+{
+	if (!n)
+		return 0;	/* Null strings are equal */
+	while ((*ucs1 == *ucs2) && *ucs1 && --n) {
+		ucs1++;
+		ucs2++;
+	}
+	return (int) *ucs1 - (int) *ucs2;
+}
+
+/*
+ * UniStrncmp_le:  Compare length limited string - native to little-endian
+ */
+static inline int
+UniStrncmp_le(const wchar_t * ucs1, const wchar_t * ucs2, size_t n)
+{
+	if (!n)
+		return 0;	/* Null strings are equal */
+	while ((*ucs1 == __le16_to_cpu(*ucs2)) && *ucs1 && --n) {
+		ucs1++;
+		ucs2++;
+	}
+	return (int) *ucs1 - (int) __le16_to_cpu(*ucs2);
+}
+
+/*
+ * UniStrncpy:  Copy length limited string with pad
+ */
+static inline wchar_t *
+UniStrncpy(wchar_t * ucs1, const wchar_t * ucs2, size_t n)
+{
+	wchar_t *anchor = ucs1;
+
+	while (n-- && *ucs2)	/* Copy the strings */
+		*ucs1++ = *ucs2++;
+
+	n++;
+	while (n--)		/* Pad with nulls */
+		*ucs1++ = 0;
+	return anchor;
+}
+
+/*
+ * UniStrncpy_le:  Copy length limited string with pad to little-endian
+ */
+static inline wchar_t *
+UniStrncpy_le(wchar_t * ucs1, const wchar_t * ucs2, size_t n)
+{
+	wchar_t *anchor = ucs1;
+
+	while (n-- && *ucs2)	/* Copy the strings */
+		*ucs1++ = __le16_to_cpu(*ucs2++);
+
+	n++;
+	while (n--)		/* Pad with nulls */
+		*ucs1++ = 0;
+	return anchor;
+}
+
+/*
+ * UniStrstr:  Find a string in a string
+ *
+ * Returns:
+ *     Address of first match found
+ *     NULL if no matching string is found
+ */
+static inline wchar_t *
+UniStrstr(const wchar_t * ucs1, const wchar_t * ucs2)
+{
+	const wchar_t *anchor1 = ucs1;
+	const wchar_t *anchor2 = ucs2;
+
+	while (*ucs1) {
+		if (*ucs1 == *ucs2) {	/* Partial match found */
+			ucs1++;
+			ucs2++;
+		} else {
+			if (!*ucs2)	/* Match found */
+				return (wchar_t *) anchor1;
+			ucs1 = ++anchor1;	/* No match */
+			ucs2 = anchor2;
+		}
+	}
+
+	if (!*ucs2)		/* Both end together */
+		return (wchar_t *) anchor1;	/* Match found */
+	return NULL;		/* No match */
+}
+
+#ifndef UNIUPR_NOUPPER
+/*
+ * UniToupper:  Convert a unicode character to upper case
+ */
+static inline wchar_t
+UniToupper(register wchar_t uc)
+{
+	register const struct UniCaseRange *rp;
+
+	if (uc < sizeof (CifsUniUpperTable)) {	/* Latin characters */
+		return uc + CifsUniUpperTable[uc];	/* Use base tables */
+	} else {
+		rp = CifsUniUpperRange;	/* Use range tables */
+		while (rp->start) {
+			if (uc < rp->start)	/* Before start of range */
+				return uc;	/* Uppercase = input */
+			if (uc <= rp->end)	/* In range */
+				return uc + rp->table[uc - rp->start];
+			rp++;	/* Try next range */
+		}
+	}
+	return uc;		/* Past last range */
+}
+
+/*
+ * UniStrupr:  Upper case a unicode string
+ */
+static inline wchar_t *
+UniStrupr(register wchar_t * upin)
+{
+	register wchar_t *up;
+
+	up = upin;
+	while (*up) {		/* For all characters */
+		*up = UniToupper(*up);
+		up++;
+	}
+	return upin;		/* Return input pointer */
+}
+#endif				/* UNIUPR_NOUPPER */
+
+#ifndef UNIUPR_NOLOWER
+/*
+ * UniTolower:  Convert a unicode character to lower case
+ */
+static inline wchar_t
+UniTolower(wchar_t uc)
+{
+	register struct UniCaseRange *rp;
+
+	if (uc < sizeof (UniLowerTable)) {	/* Latin characters */
+		return uc + UniLowerTable[uc];	/* Use base tables */
+	} else {
+		rp = UniLowerRange;	/* Use range tables */
+		while (rp->start) {
+			if (uc < rp->start)	/* Before start of range */
+				return uc;	/* Uppercase = input */
+			if (uc <= rp->end)	/* In range */
+				return uc + rp->table[uc - rp->start];
+			rp++;	/* Try next range */
+		}
+	}
+	return uc;		/* Past last range */
+}
+
+/*
+ * UniStrlwr:  Lower case a unicode string
+ */
+static inline wchar_t *
+UniStrlwr(register wchar_t * upin)
+{
+	register wchar_t *up;
+
+	up = upin;
+	while (*up) {		/* For all characters */
+		*up = UniTolower(*up);
+		up++;
+	}
+	return upin;		/* Return input pointer */
+}
+
+#endif

fs/cifs/cifsfs.h

+/*
+ *   fs/cifs/cifsfs.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   This library is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License as published
+ *   by the Free Software Foundation; either version 2.1 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This library 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 Lesser General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Lesser General Public License
+ *   along with this library; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
+ */
+
+#ifndef _CIFSFS_H
+#define _CIFSFS_H
+
+#define ROOT_I 2
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+extern int map_cifs_error(int error_class, int error_code,
+			  int status_codes_negotiated);
+
+extern struct address_space_operations cifs_addr_ops;
+
+/* Functions related to super block operations */
+extern struct super_operations cifs_super_ops;
+extern void cifs_put_inode(struct inode *);
+extern void cifs_read_inode(struct inode *);
+extern void cifs_delete_inode(struct inode *);
+/* extern void cifs_write_inode(struct inode *); *//* BB not needed yet */
+
+/* Functions related to inodes */
+extern struct inode_operations cifs_dir_inode_ops;
+extern int cifs_create(struct inode *, struct dentry *, int);
+extern struct dentry *cifs_lookup(struct inode *, struct dentry *);
+extern int cifs_unlink(struct inode *, struct dentry *);
+extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
+extern int cifs_mkdir(struct inode *, struct dentry *, int);
+extern int cifs_rmdir(struct inode *, struct dentry *);
+extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
+		       struct dentry *);
+extern int cifs_revalidate(struct dentry *);
+extern int cifs_setattr(struct dentry *, struct iattr *);
+
+extern struct inode_operations cifs_file_inode_ops;
+extern void cifs_truncate_file(struct inode *);
+
+extern struct inode_operations cifs_symlink_inode_ops;
+
+/* Functions related to files and directories */
+extern struct file_operations cifs_file_ops;
+extern int cifs_open(struct inode *inode, struct file *file);
+extern int cifs_close(struct inode *inode, struct file *file);
+extern int cifs_closedir(struct inode *inode, struct file *file);
+extern ssize_t cifs_read(struct file *file, char *read_data,
+			 size_t read_size, loff_t * poffset);
+extern ssize_t cifs_write(struct file *file, const char *write_data,
+			  size_t write_size, loff_t * poffset);
+extern int cifs_lock(struct file *, int, struct file_lock *);
+extern int cifs_fsync(struct file *, struct dentry *, int);
+
+extern struct file_operations cifs_dir_ops;
+extern int cifs_dir_open(struct inode *inode, struct file *file);
+extern int cifs_readdir(struct file *file, void *direntry, filldir_t filldir);
+
+/* Functions related to dir entries */
+extern struct dentry_operations cifs_dentry_ops;
+
+/* Functions related to symlinks */
+extern int cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
+extern int cifs_readlink(struct dentry *direntry, char *buffer, int buflen);
+extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
+			const char *symname);
+
+#endif				/* _CIFSSMB_H */

fs/cifs/md5.h

+#ifndef MD5_H
+#define MD5_H
+#ifndef HEADER_MD5_H
+/* Try to avoid clashes with OpenSSL */
+#define HEADER_MD5_H
+#endif
+
+struct MD5Context {
+	__u32 buf[4];
+	__u32 bits[2];
+	unsigned char in[64];
+};
+#endif				/* !MD5_H */
+
+#ifndef _HMAC_MD5_H
+struct HMACMD5Context {
+	struct MD5Context ctx;
+	unsigned char k_ipad[65];
+	unsigned char k_opad[65];
+};
+#endif				/* _HMAC_MD5_H */
+
+void MD5Init(struct MD5Context *context);
+void MD5Update(struct MD5Context *context, unsigned char const *buf,
+	       unsigned len);
+void MD5Final(unsigned char digest[16], struct MD5Context *context);
+
+/* The following definitions come from lib/hmacmd5.c  */
+
+void hmac_md5_init_rfc2104(unsigned char *key, int key_len,
+			   struct HMACMD5Context *ctx);
+void hmac_md5_init_limK_to_64(const unsigned char *key, int key_len,
+			      struct HMACMD5Context *ctx);
+void hmac_md5_update(const unsigned char *text, int text_len,
+		     struct HMACMD5Context *ctx);
+void hmac_md5_final(unsigned char *digest, struct HMACMD5Context *ctx);
+void hmac_md5(unsigned char key[16], unsigned char *data, int data_len,
+	      unsigned char *digest);

fs/cifs/ntlmssp.h

+/*
+ *   fs/cifs/ntlmssp.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   This library is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License as published
+ *   by the Free Software Foundation; either version 2.1 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This library 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 Lesser General Public License for more details.
+ *
+ *   You should have received a copy of the GNU Lesser General Public License
+ *   along with this library; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
+ */
+
+#pragma pack(1)
+
+#define NTLMSSP_SIGNATURE "NTLMSSP"
+/* Message Types */
+#define NtLmNegotiate     1
+#define NtLmChallenge     2
+#define NtLmAuthenticate  3
+#define UnknownMessage    8
+/* Negotiate Flags */
+#define NTLMSSP_NEGOTIATE_UNICODE       0x01	// Text strings are in unicode
+#define NTLMSSP_NEGOTIATE_OEM           0x02	// Text strings are in OEM
+#define NTLMSSP_REQUEST_TARGET          0x04	// Server return its auth realm
+#define NTLMSSP_NEGOTIATE_SIGN        0x0010	// Request signature capability
+#define NTLMSSP_NEGOTIATE_SEAL        0x0020	// Request confidentiality
+#define NTLMSSP_NEGOTIATE_DGRAM       0x0040
+#define NTLMSSP_NEGOTIATE_LM_KEY      0x0080	// Use LM session key for sign/seal
+#define NTLMSSP_NEGOTIATE_NTLM        0x0200	// NTLM authentication
+#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000
+#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
+#define NTLMSSP_NEGOTIATE_LOCAL_CALL  0x4000	// client/server on same machine
+#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000	// Sign for all security levels
+#define NTLMSSP_NEGOTIATE_NTLMV2      0x80000
+#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
+#define NTLMSSP_NEGOTIATE_128     0x20000000
+#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
+/* server only negotiate flags */
+#define NTLMSSP_TARGET_TYPE_DOMAIN  0x10000	/* NEGOTIATE_DOMAIN 0x1000 ? */
+#define NTLMSSP_TARGET_TYPE_SERVER  0x20000	/* NEGOTIATE_WORKSTATION 0x2000 ? */
+
+/* Although typedefs are not commonly used for structure definitions */
+/* in the Linux kernel, in this particular case they are useful      */
+/* to more closely match the standards document for NTLMSSP from     */
+/* OpenGroup and to make the code more closely match the standard in */
+/* appearance */
+
+typedef struct _SECURITY_BUFFER {
+	__u16 Length;
+	__u16 MaximumLength;
+	__u32 Buffer;		/* offset to buffer */
+} SECURITY_BUFFER;
+
+typedef struct _NEGOTIATE_MESSAGE {
+	__u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
+	__u32 MessageType;
+	__u32 NegotiateFlags;
+	SECURITY_BUFFER DomainName;	/* RFC 1001 style and ASCII */
+	SECURITY_BUFFER WorkstationName;	/* RFC 1001 and ASCII */
+	char DomainString[0];
+	/* followed by WorkstationString */
+} NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
+
+typedef struct _CHALLENGE_MESSAGE {
+	__u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
+	__u32 MessageType;
+	SECURITY_BUFFER TargetName;
+	__u32 NegotiateFlags;
+	__u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
+	__u8 Reserved[8];
+	SECURITY_BUFFER TargetInfoArray;
+} CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
+
+typedef struct _AUTHENTICATE_MESSAGE {
+	__u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
+	__u32 MessageType;
+	SECURITY_BUFFER LmChallengeResponse;
+	SECURITY_BUFFER NtChallengeResponse;
+	SECURITY_BUFFER DomainName;
+	SECURITY_BUFFER UserName;
+	SECURITY_BUFFER WorkstationName;
+	SECURITY_BUFFER SessionKey;
+	__u32 NegotiateFlags;
+	char UserString[0];
+} AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;
+
+#pragma pack()			/* resume default structure packing */

fs/nls/Config.in

@@ -12,7 +12,7 @@ fi
 # msdos and Joliet want NLS
 if [ "$CONFIG_JOLIET" = "y" -o "$CONFIG_FAT_FS" != "n" \
 	-o "$CONFIG_NTFS_FS" != "n" -o "$CONFIG_NCPFS_NLS" = "y" \
-	-o "$CONFIG_SMB_NLS" = "y" -o "$CONFIG_JFS_FS" != "n" ]; then
+	-o "$CONFIG_SMB_NLS" = "y" -o "$CONFIG_JFS_FS" != "n" -o "$CONFIG_CIFS" != "n"]; then
   define_bool CONFIG_NLS y
 else
   define_bool CONFIG_NLS n