Add sources for 3.9 (v3.9.7)

sources/3.9/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 time and test resources to pursue
+this project, to Jim McDonough from IBM (and the Samba Team) for his help, to
+the IBM Linux JFS team for explaining many esoteric Linux filesystem features.
+Jeremy Allison of the Samba team has done invaluable work in adding the server
+side of the original CIFS Unix extensions and reviewing and implementing
+portions of the newer CIFS POSIX extensions into the Samba 3 file server. Thank
+Dave Boutcher of IBM Rochester (author of the OS/400 smb/cifs filesystem client)
+for proving years ago that very good smb/cifs clients could be done on Unix-like
+operating systems.  Volker Lendecke, Andrew Tridgell, Urban Widmark, John 
+Newbigin and others for their work on the Linux smbfs module.  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.
+
+Patch Contributors
+------------------
+Zwane Mwaikambo
+Andi Kleen
+Amrut Joshi
+Shobhit Dayal
+Sergey Vlasov
+Richard Hughes
+Yury Umanets
+Mark Hamzy (for some of the early cifs IPv6 work)
+Domen Puncer
+Jesper Juhl (in particular for lots of whitespace/formatting cleanup)
+Vince Negri and Dave Stahl (for finding an important caching bug)
+Adrian Bunk (kcalloc cleanups)
+Miklos Szeredi 
+Kazeon team for various fixes especially for 2.4 version.
+Asser Ferno (Change Notify support)
+Shaggy (Dave Kleikamp) for innumerable small fs suggestions and some good cleanup
+Gunter Kukkukk (testing and suggestions for support of old servers)
+Igor Mammedov (DFS support)
+Jeff Layton (many, many fixes, as well as great work on the cifs Kerberos code)
+
+Test case and Bug Report contributors
+-------------------------------------
+Thanks to those in the community who have submitted detailed bug reports
+and debug of problems they have found:  Jochen Dolze, David Blaine,
+Rene Scharfe, Martin Josefsson, Alexander Wild, Anthony Liguori,
+Lars Muller, Urban Widmark, Massimiliano Ferrero, Howard Owen,
+Olaf Kirch, Kieron Briggs, Nick Millington and others. Also special
+mention to the Stanford Checker (SWAT) which pointed out many minor
+bugs in error paths.  Valuable suggestions also have come from Al Viro
+and Dave Miller.
+
+And thanks to the IBM LTC and Power test teams and SuSE testers for
+finding multiple bugs during excellent stress test runs.

sources/3.9/Kconfig

+config CIFS
+	tristate "CIFS support (advanced network filesystem, SMBFS successor)"
+	depends on INET
+	select NLS
+	select CRYPTO
+	select CRYPTO_MD4
+	select CRYPTO_MD5
+	select CRYPTO_HMAC
+	select CRYPTO_ARC4
+	select CRYPTO_ECB
+	select CRYPTO_DES
+	select CRYPTO_SHA256
+	help
+	  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.  The CIFS protocol is fully supported by
+	  file servers such as Windows 2000 (including Windows 2003, Windows 2008,
+	  NT 4 and Windows XP) as well by Samba (which provides excellent CIFS
+	  server support for Linux and many other operating systems). Limited
+	  support for OS/2 and Windows ME and similar servers is provided as
+	  well.
+
+	  The cifs module provides an advanced network file system
+	  client for mounting to CIFS compliant servers.  It includes
+	  support for DFS (hierarchical name space), secure per-user
+	  session establishment via Kerberos or NTLM or NTLMv2,
+	  safe distributed caching (oplock), optional packet
+	  signing, Unicode and other internationalization improvements.
+	  If you need to mount to Samba or Windows from this machine, say Y.
+
+config CIFS_STATS
+        bool "CIFS statistics"
+        depends on CIFS
+        help
+          Enabling this option will cause statistics for each server share
+	  mounted by the cifs client to be displayed in /proc/fs/cifs/Stats
+
+config CIFS_STATS2
+	bool "Extended statistics"
+	depends on CIFS_STATS
+	help
+	  Enabling this option will allow more detailed statistics on SMB
+	  request timing to be displayed in /proc/fs/cifs/DebugData and also
+	  allow optional logging of slow responses to dmesg (depending on the
+	  value of /proc/fs/cifs/cifsFYI, see fs/cifs/README for more details).
+	  These additional statistics may have a minor effect on performance
+	  and memory utilization.
+
+	  Unless you are a developer or are doing network performance analysis
+	  or tuning, say N.
+
+config CIFS_WEAK_PW_HASH
+	bool "Support legacy servers which use weaker LANMAN security"
+	depends on CIFS
+	help
+	  Modern CIFS servers including Samba and most Windows versions
+	  (since 1997) support stronger NTLM (and even NTLMv2 and Kerberos)
+	  security mechanisms. These hash the password more securely
+	  than the mechanisms used in the older LANMAN version of the
+	  SMB protocol but LANMAN based authentication is needed to
+	  establish sessions with some old SMB servers.
+
+	  Enabling this option allows the cifs module to mount to older
+	  LANMAN based servers such as OS/2 and Windows 95, but such
+	  mounts may be less secure than mounts using NTLM or more recent
+	  security mechanisms if you are on a public network.  Unless you
+	  have a need to access old SMB servers (and are on a private
+	  network) you probably want to say N.  Even if this support
+	  is enabled in the kernel build, LANMAN authentication will not be
+	  used automatically. At runtime LANMAN mounts are disabled but
+	  can be set to required (or optional) either in
+	  /proc/fs/cifs (see fs/cifs/README for more detail) or via an
+	  option on the mount command. This support is disabled by
+	  default in order to reduce the possibility of a downgrade
+	  attack.
+
+	  If unsure, say N.
+
+config CIFS_UPCALL
+	bool "Kerberos/SPNEGO advanced session setup"
+	depends on CIFS && KEYS
+	select DNS_RESOLVER
+	help
+	  Enables an upcall mechanism for CIFS which accesses userspace helper
+	  utilities to provide SPNEGO packaged (RFC 4178) Kerberos tickets
+	  which are needed to mount to certain secure servers (for which more
+	  secure Kerberos authentication is required). If unsure, say N.
+
+config CIFS_XATTR
+        bool "CIFS extended attributes"
+        depends on CIFS
+        help
+          Extended attributes are name:value pairs associated with inodes by
+          the kernel or by users (see the attr(5) manual page, or visit
+          <http://acl.bestbits.at/> for details).  CIFS maps the name of
+          extended attributes beginning with the user namespace prefix
+          to SMB/CIFS EAs. EAs are stored on Windows servers without the
+          user namespace prefix, but their names are seen by Linux cifs clients
+          prefaced by the user namespace prefix. The system namespace
+          (used by some filesystems to store ACLs) is not supported at
+          this time.
+
+          If unsure, say N.
+
+config CIFS_POSIX
+        bool "CIFS POSIX Extensions"
+        depends on CIFS_XATTR
+        help
+          Enabling this option will cause the cifs client to attempt to
+	  negotiate a newer dialect with servers, such as Samba 3.0.5
+	  or later, that optionally can handle more POSIX like (rather
+	  than Windows like) file behavior.  It also enables
+	  support for POSIX ACLs (getfacl and setfacl) to servers
+	  (such as Samba 3.10 and later) which can negotiate
+	  CIFS POSIX ACL support.  If unsure, say N.
+
+config CIFS_ACL
+	  bool "Provide CIFS ACL support"
+	  depends on CIFS_XATTR && KEYS
+	  help
+	    Allows fetching CIFS/NTFS ACL from the server.  The DACL blob
+	    is handed over to the application/caller.
+
+config CIFS_DEBUG
+	bool "Enable CIFS debugging routines"
+	default y
+	depends on CIFS
+	help
+	   Enabling this option adds helpful debugging messages to
+	   the cifs code which increases the size of the cifs module.
+	   If unsure, say Y.
+config CIFS_DEBUG2
+	bool "Enable additional CIFS debugging routines"
+	depends on CIFS_DEBUG
+	help
+	   Enabling this option adds a few more debugging routines
+	   to the cifs code which slightly increases the size of
+	   the cifs module and can cause additional logging of debug
+	   messages in some error paths, slowing performance. This
+	   option can be turned off unless you are debugging
+	   cifs problems.  If unsure, say N.
+
+config CIFS_DFS_UPCALL
+	  bool "DFS feature support"
+	  depends on CIFS && KEYS
+	  select DNS_RESOLVER
+	  help
+	    Distributed File System (DFS) support is used to access shares
+	    transparently in an enterprise name space, even if the share
+	    moves to a different server.  This feature also enables
+	    an upcall mechanism for CIFS which contacts userspace helper
+	    utilities to provide server name resolution (host names to
+	    IP addresses) which is needed for implicit mounts of DFS junction
+	    points. If unsure, say N.
+
+config CIFS_NFSD_EXPORT
+	  bool "Allow nfsd to export CIFS file system"
+	  depends on CIFS && BROKEN
+	  help
+	   Allows NFS server to export a CIFS mounted share (nfsd over cifs)
+
+config CIFS_SMB2
+	bool "SMB2 network file system support"
+	depends on CIFS && INET
+	select NLS
+	select KEYS
+	select FSCACHE
+	select DNS_RESOLVER
+
+	help
+	  This enables experimental support for the SMB2 (Server Message Block
+	  version 2) protocol. The SMB2 protocol is the successor to the
+	  popular CIFS and SMB network file sharing protocols. SMB2 is the
+	  native file sharing mechanism for recent versions of Windows
+	  operating systems (since Vista).  SMB2 enablement will eventually
+	  allow users better performance, security and features, than would be
+	  possible with cifs. Note that smb2 mount options also are simpler
+	  (compared to cifs) due to protocol improvements.
+
+	  Unless you are a developer or tester, say N.
+
+config CIFS_FSCACHE
+	  bool "Provide CIFS client caching support"
+	  depends on CIFS=m && FSCACHE || CIFS=y && FSCACHE=y
+	  help
+	    Makes CIFS FS-Cache capable. Say Y here if you want your CIFS data
+	    to be cached locally on disk through the general filesystem cache
+	    manager. If unsure, say N.
+

sources/3.9/Makefile

+#
+# Makefile for Linux CIFS VFS client 
+#
+obj-$(CONFIG_CIFS) += etercifs.o
+
+etercifs-y := cifsfs.o cifssmb.o cifs_debug.o connect.o dir.o file.o inode.o \
+	  link.o misc.o netmisc.o smbencrypt.o transport.o asn1.o \
+	  cifs_unicode.o nterr.o xattr.o cifsencrypt.o \
+	  readdir.o ioctl.o sess.o export.o smb1ops.o
+
+etercifs-$(CONFIG_CIFS_ACL) += cifsacl.o
+
+etercifs-$(CONFIG_CIFS_UPCALL) += cifs_spnego.o
+
+etercifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
+
+etercifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
+
+etercifs-$(CONFIG_CIFS_SMB2) += smb2ops.o smb2maperror.o smb2transport.o \
+			    smb2misc.o smb2pdu.o smb2inode.o smb2file.o

sources/3.9/TODO

+Version 1.53 May 20, 2008
+
+A Partial List of 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(Windows/CIFS ACLs) for chmod/chgrp/chown
+so that these operations can be supported to Windows servers
+
+b) Mapping POSIX ACLs (and eventually NFSv4 ACLs) to CIFS
+SecurityDescriptors
+
+c) Better pam/winbind integration (e.g. to handle uid mapping
+better)
+
+d) Cleanup now unneeded SessSetup code in
+fs/cifs/connect.c and add back in NTLMSSP code if any servers
+need it
+
+e) fix NTLMv2 signing when two mounts with different users to same
+server.
+
+f) Directory entry caching relies on a 1 second timer, rather than 
+using FindNotify or equivalent.  - (started)
+
+g) quota support (needs minor kernel change since quota calls
+to make it to network filesystems or deviceless filesystems)
+
+h) investigate sync behavior (including syncpage) and check  
+for proper behavior of intr/nointr
+
+i) improve support for very old servers (OS/2 and Win9x for example)
+Including support for changing the time remotely (utimes command).
+
+j) hook lower into the sockets api (as NFS/SunRPC does) to avoid the
+extra copy in/out of the socket buffers in some cases.
+
+k) Better optimize open (and pathbased setfilesize) to reduce the
+oplock breaks coming from windows srv.  Piggyback identical file
+opens on top of each other by incrementing reference count rather
+than resending (helps reduce server resource utilization and avoid
+spurious oplock breaks).
+
+l) Improve performance of readpages by sending more than one read
+at a time when 8 pages or more are requested. In conjuntion
+add support for async_cifs_readpages.
+
+m) Add support for storing symlink info to Windows servers 
+in the Extended Attribute format their SFU clients would recognize.
+
+n) Finish fcntl D_NOTIFY support so kde and gnome file list windows
+will autorefresh (partially complete by Asser). Needs minor kernel
+vfs change to support removing D_NOTIFY on a file.   
+
+o) Add GUI tool to configure /proc/fs/cifs settings and for display of
+the CIFS statistics (started)
+
+p) implement support for security and trusted categories of xattrs
+(requires minor protocol extension) to enable better support for SELINUX
+
+q) Implement O_DIRECT flag on open (already supported on mount)
+
+r) Create UID mapping facility so server UIDs can be mapped on a per
+mount or a per server basis to client UIDs or nobody if no mapping
+exists.  This is helpful when Unix extensions are negotiated to
+allow better permission checking when UIDs differ on the server
+and client.  Add new protocol request to the CIFS protocol 
+standard for asking the server for the corresponding name of a
+particular uid.
+
+s) Add support for CIFS Unix and also the newer POSIX extensions to the
+server side for Samba 4.
+
+t) In support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers) 
+need to add ability to set time to server (utimes command)
+
+u) DOS attrs - returned as pseudo-xattr in Samba format (check VFAT and NTFS for this too)
+
+v) mount check for unmatched uids
+
+w) Add support for new vfs entry point for fallocate
+
+x) Fix Samba 3 server to handle Linux kernel aio so dbench with lots of 
+processes can proceed better in parallel (on the server)
+
+y) Fix Samba 3 to handle reads/writes over 127K (and remove the cifs mount
+restriction of wsize max being 127K) 
+
+KNOWN BUGS (updated April 24, 2007)
+====================================
+See http://bugzilla.samba.org - search on product "CifsVFS" for
+current bug list.
+
+1) existing 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, although earlier versions of Samba
+overly restrict the pathnames.
+2) follow_link and readdir code does not follow dfs junctions
+but recognizes them
+3) create of new files to FAT partitions on Windows servers can
+succeed but still return access denied (appears to be Windows 
+server not cifs client problem) and has not been reproduced recently.
+NTFS partitions do not have this problem.
+4) Unix/POSIX capabilities are reset after reconnection, and affect
+a few fields in the tree connection but we do do not know which
+superblocks to apply these changes to.  We should probably walk
+the list of superblocks to set these.  Also need to check the
+flags on the second mount to the same share, and see if we
+can do the same trick that NFS does to remount duplicate shares.
+
+Misc testing to do
+==================
+1) check out max path names and max path name components against various server
+types. Try nested symlinks (8 deep). Return max path name in stat -f information
+
+2) Modify file portion of ltp so it can run against a mounted network
+share and run it against cifs vfs in automated fashion.
+
+3) Additional performance testing and optimization using iozone and similar - 
+there are some easy changes that can be done to parallelize sequential writes,
+and when signing is disabled to request larger read sizes (larger than 
+negotiated size) and send larger write sizes to modern servers.
+
+4) More exhaustively test against less common servers.  More testing
+against Windows 9x, Windows ME servers.
+

sources/3.9/cache.c

+/*
+ *   fs/cifs/cache.c - CIFS filesystem cache index structure definitions
+ *
+ *   Copyright (c) 2010 Novell, Inc.
+ *   Authors(s): Suresh Jayaraman (sjayaraman@suse.de>
+ *
+ *   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
+ */
+#include "fscache.h"
+#include "cifs_debug.h"
+
+/*
+ * CIFS filesystem definition for FS-Cache
+ */
+struct fscache_netfs cifs_fscache_netfs = {
+	.name = "cifs",
+	.version = 0,
+};
+
+/*
+ * Register CIFS for caching with FS-Cache
+ */
+int cifs_fscache_register(void)
+{
+	return fscache_register_netfs(&cifs_fscache_netfs);
+}
+
+/*
+ * Unregister CIFS for caching
+ */
+void cifs_fscache_unregister(void)
+{
+	fscache_unregister_netfs(&cifs_fscache_netfs);
+}
+
+/*
+ * Key layout of CIFS server cache index object
+ */
+struct cifs_server_key {
+	uint16_t	family;		/* address family */
+	__be16		port;		/* IP port */
+	union {
+		struct in_addr	ipv4_addr;
+		struct in6_addr	ipv6_addr;
+	} addr[0];
+};
+
+/*
+ * Server object keyed by {IPaddress,port,family} tuple
+ */
+static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
+				   void *buffer, uint16_t maxbuf)
+{
+	const struct TCP_Server_Info *server = cookie_netfs_data;
+	const struct sockaddr *sa = (struct sockaddr *) &server->dstaddr;
+	const struct sockaddr_in *addr = (struct sockaddr_in *) sa;
+	const struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) sa;
+	struct cifs_server_key *key = buffer;
+	uint16_t key_len = sizeof(struct cifs_server_key);
+
+	memset(key, 0, key_len);
+
+	/*
+	 * Should not be a problem as sin_family/sin6_family overlays
+	 * sa_family field
+	 */
+	switch (sa->sa_family) {
+	case AF_INET:
+		key->family = sa->sa_family;
+		key->port = addr->sin_port;
+		key->addr[0].ipv4_addr = addr->sin_addr;
+		key_len += sizeof(key->addr[0].ipv4_addr);
+		break;
+
+	case AF_INET6:
+		key->family = sa->sa_family;
+		key->port = addr6->sin6_port;
+		key->addr[0].ipv6_addr = addr6->sin6_addr;
+		key_len += sizeof(key->addr[0].ipv6_addr);
+		break;
+
+	default:
+		cERROR(1, "Unknown network family '%d'", sa->sa_family);
+		key_len = 0;
+		break;
+	}
+
+	return key_len;
+}
+
+/*
+ * Server object for FS-Cache
+ */
+const struct fscache_cookie_def cifs_fscache_server_index_def = {
+	.name = "CIFS.server",
+	.type = FSCACHE_COOKIE_TYPE_INDEX,
+	.get_key = cifs_server_get_key,
+};
+
+/*
+ * Auxiliary data attached to CIFS superblock within the cache
+ */
+struct cifs_fscache_super_auxdata {
+	u64	resource_id;		/* unique server resource id */
+};
+
+static char *extract_sharename(const char *treename)
+{
+	const char *src;
+	char *delim, *dst;
+	int len;
+
+	/* skip double chars at the beginning */
+	src = treename + 2;
+
+	/* share name is always preceded by '\\' now */
+	delim = strchr(src, '\\');
+	if (!delim)
+		return ERR_PTR(-EINVAL);
+	delim++;
+	len = strlen(delim);
+
+	/* caller has to free the memory */
+	dst = kstrndup(delim, len, GFP_KERNEL);
+	if (!dst)
+		return ERR_PTR(-ENOMEM);
+
+	return dst;
+}
+
+/*
+ * Superblock object currently keyed by share name
+ */
+static uint16_t cifs_super_get_key(const void *cookie_netfs_data, void *buffer,
+				   uint16_t maxbuf)
+{
+	const struct cifs_tcon *tcon = cookie_netfs_data;
+	char *sharename;
+	uint16_t len;
+
+	sharename = extract_sharename(tcon->treeName);
+	if (IS_ERR(sharename)) {
+		cFYI(1, "%s: couldn't extract sharename", __func__);
+		sharename = NULL;
+		return 0;
+	}
+
+	len = strlen(sharename);
+	if (len > maxbuf)
+		return 0;
+
+	memcpy(buffer, sharename, len);
+
+	kfree(sharename);
+
+	return len;
+}
+
+static uint16_t
+cifs_fscache_super_get_aux(const void *cookie_netfs_data, void *buffer,
+			   uint16_t maxbuf)
+{
+	struct cifs_fscache_super_auxdata auxdata;
+	const struct cifs_tcon *tcon = cookie_netfs_data;
+
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.resource_id = tcon->resource_id;
+
+	if (maxbuf > sizeof(auxdata))
+		maxbuf = sizeof(auxdata);
+
+	memcpy(buffer, &auxdata, maxbuf);
+
+	return maxbuf;
+}
+
+static enum
+fscache_checkaux cifs_fscache_super_check_aux(void *cookie_netfs_data,
+					      const void *data,
+					      uint16_t datalen)
+{
+	struct cifs_fscache_super_auxdata auxdata;
+	const struct cifs_tcon *tcon = cookie_netfs_data;
+
+	if (datalen != sizeof(auxdata))
+		return FSCACHE_CHECKAUX_OBSOLETE;
+
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.resource_id = tcon->resource_id;
+
+	if (memcmp(data, &auxdata, datalen) != 0)
+		return FSCACHE_CHECKAUX_OBSOLETE;
+
+	return FSCACHE_CHECKAUX_OKAY;
+}
+
+/*
+ * Superblock object for FS-Cache
+ */
+const struct fscache_cookie_def cifs_fscache_super_index_def = {
+	.name = "CIFS.super",
+	.type = FSCACHE_COOKIE_TYPE_INDEX,
+	.get_key = cifs_super_get_key,
+	.get_aux = cifs_fscache_super_get_aux,
+	.check_aux = cifs_fscache_super_check_aux,
+};
+
+/*
+ * Auxiliary data attached to CIFS inode within the cache
+ */
+struct cifs_fscache_inode_auxdata {
+	struct timespec	last_write_time;
+	struct timespec	last_change_time;
+	u64		eof;
+};
+
+static uint16_t cifs_fscache_inode_get_key(const void *cookie_netfs_data,
+					   void *buffer, uint16_t maxbuf)
+{
+	const struct cifsInodeInfo *cifsi = cookie_netfs_data;
+	uint16_t keylen;
+
+	/* use the UniqueId as the key */
+	keylen = sizeof(cifsi->uniqueid);
+	if (keylen > maxbuf)
+		keylen = 0;
+	else
+		memcpy(buffer, &cifsi->uniqueid, keylen);
+
+	return keylen;
+}
+
+static void
+cifs_fscache_inode_get_attr(const void *cookie_netfs_data, uint64_t *size)
+{
+	const struct cifsInodeInfo *cifsi = cookie_netfs_data;
+
+	*size = cifsi->vfs_inode.i_size;
+}
+
+static uint16_t
+cifs_fscache_inode_get_aux(const void *cookie_netfs_data, void *buffer,
+			   uint16_t maxbuf)
+{
+	struct cifs_fscache_inode_auxdata auxdata;
+	const struct cifsInodeInfo *cifsi = cookie_netfs_data;
+
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.eof = cifsi->server_eof;
+	auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
+	auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
+
+	if (maxbuf > sizeof(auxdata))
+		maxbuf = sizeof(auxdata);
+
+	memcpy(buffer, &auxdata, maxbuf);
+
+	return maxbuf;
+}
+
+static enum
+fscache_checkaux cifs_fscache_inode_check_aux(void *cookie_netfs_data,
+					      const void *data,
+					      uint16_t datalen)
+{
+	struct cifs_fscache_inode_auxdata auxdata;
+	struct cifsInodeInfo *cifsi = cookie_netfs_data;
+
+	if (datalen != sizeof(auxdata))
+		return FSCACHE_CHECKAUX_OBSOLETE;
+
+	memset(&auxdata, 0, sizeof(auxdata));
+	auxdata.eof = cifsi->server_eof;
+	auxdata.last_write_time = cifsi->vfs_inode.i_mtime;
+	auxdata.last_change_time = cifsi->vfs_inode.i_ctime;
+
+	if (memcmp(data, &auxdata, datalen) != 0)
+		return FSCACHE_CHECKAUX_OBSOLETE;
+
+	return FSCACHE_CHECKAUX_OKAY;
+}
+
+static void cifs_fscache_inode_now_uncached(void *cookie_netfs_data)
+{
+	struct cifsInodeInfo *cifsi = cookie_netfs_data;
+	struct pagevec pvec;
+	pgoff_t first;
+	int loop, nr_pages;
+
+	pagevec_init(&pvec, 0);
+	first = 0;
+
+	cFYI(1, "%s: cifs inode 0x%p now uncached", __func__, cifsi);
+
+	for (;;) {
+		nr_pages = pagevec_lookup(&pvec,
+					  cifsi->vfs_inode.i_mapping, first,
+					  PAGEVEC_SIZE - pagevec_count(&pvec));
+		if (!nr_pages)
+			break;
+
+		for (loop = 0; loop < nr_pages; loop++)
+			ClearPageFsCache(pvec.pages[loop]);
+
+		first = pvec.pages[nr_pages - 1]->index + 1;
+
+		pvec.nr = nr_pages;
+		pagevec_release(&pvec);
+		cond_resched();
+	}
+}
+
+const struct fscache_cookie_def cifs_fscache_inode_object_def = {
+	.name		= "CIFS.uniqueid",
+	.type		= FSCACHE_COOKIE_TYPE_DATAFILE,
+	.get_key	= cifs_fscache_inode_get_key,
+	.get_attr	= cifs_fscache_inode_get_attr,
+	.get_aux	= cifs_fscache_inode_get_aux,
+	.check_aux	= cifs_fscache_inode_check_aux,
+	.now_uncached	= cifs_fscache_inode_now_uncached,
+};

sources/3.9/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
+ *
+*/
+
+#ifndef _H_CIFS_DEBUG
+#define _H_CIFS_DEBUG
+
+void cifs_dump_mem(char *label, void *data, int length);
+void cifs_dump_detail(void *);
+void cifs_dump_mids(struct TCP_Server_Info *);
+#ifdef CONFIG_CIFS_DEBUG2
+#define DBG2 2
+#else
+#define DBG2 0
+#endif
+extern int traceSMB;		/* flag which enables the function below */
+void dump_smb(void *, int);
+#define CIFS_INFO	0x01
+#define CIFS_RC		0x02
+#define CIFS_TIMER	0x04
+
+extern int cifsFYI;
+
+/*
+ *	debug ON
+ *	--------
+ */
+#ifdef CONFIG_CIFS_DEBUG
+
+/* information message: e.g., configuration, major event */
+#define cifsfyi(fmt, ...)						\
+do {									\
+	if (cifsFYI & CIFS_INFO)					\
+		printk(KERN_DEBUG "%s: " fmt "\n",			\
+		       __FILE__, ##__VA_ARGS__);			\
+} while (0)
+
+#define cFYI(set, fmt, ...)						\
+do {									\
+	if (set)							\
+		cifsfyi(fmt, ##__VA_ARGS__);				\
+} while (0)
+
+#define cifswarn(fmt, ...)						\
+	printk(KERN_WARNING fmt "\n", ##__VA_ARGS__)
+
+/* error event message: e.g., i/o error */
+#define cifserror(fmt, ...)						\
+	printk(KERN_ERR "CIFS VFS: " fmt "\n", ##__VA_ARGS__);		\
+
+#define cERROR(set, fmt, ...)						\
+do {									\
+	if (set)							\
+		cifserror(fmt, ##__VA_ARGS__);				\
+} while (0)
+
+/*
+ *	debug OFF
+ *	---------
+ */
+#else		/* _CIFS_DEBUG */
+#define cifsfyi(fmt, ...)						\
+do {									\
+	if (0)								\
+		printk(KERN_DEBUG "%s: " fmt "\n",			\
+		       __FILE__, ##__VA_ARGS__);			\
+} while (0)
+#define cFYI(set, fmt, ...)						\
+do {									\
+	if (0 && set)							\
+		cifsfyi(fmt, ##__VA_ARGS__);				\
+} while (0)
+#define cifserror(fmt, ...)						\
+do {									\
+	if (0)								\
+		printk(KERN_ERR "CIFS VFS: " fmt "\n", ##__VA_ARGS__);	\
+} while (0)
+#define cERROR(set, fmt, ...)						\
+do {									\
+	if (0 && set)							\
+		cifserror(fmt, ##__VA_ARGS__);				\
+} while (0)
+#endif		/* _CIFS_DEBUG */
+
+#endif				/* _H_CIFS_DEBUG */

sources/3.9/cifs_fs_sb.h

+/*
+ *   fs/cifs/cifs_fs_sb.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002,2004
+ *   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.
+ *
+ */
+#include <linux/rbtree.h>
+
+#ifndef _CIFS_FS_SB_H
+#define _CIFS_FS_SB_H
+
+#include <linux/backing-dev.h>
+
+#define CIFS_MOUNT_NO_PERM      1 /* do not do client vfs_perm check */
+#define CIFS_MOUNT_SET_UID      2 /* set current's euid in create etc. */
+#define CIFS_MOUNT_SERVER_INUM  4 /* inode numbers from uniqueid from server  */
+#define CIFS_MOUNT_DIRECT_IO    8 /* do not write nor read through page cache */
+#define CIFS_MOUNT_NO_XATTR     0x10  /* if set - disable xattr support       */
+#define CIFS_MOUNT_MAP_SPECIAL_CHR 0x20 /* remap illegal chars in filenames   */
+#define CIFS_MOUNT_POSIX_PATHS  0x40  /* Negotiate posix pathnames if possible*/
+#define CIFS_MOUNT_UNX_EMUL     0x80  /* Network compat with SFUnix emulation */
+#define CIFS_MOUNT_NO_BRL       0x100 /* No sending byte range locks to srv   */
+#define CIFS_MOUNT_CIFS_ACL     0x200 /* send ACL requests to non-POSIX srv   */
+#define CIFS_MOUNT_OVERR_UID    0x400 /* override uid returned from server    */
+#define CIFS_MOUNT_OVERR_GID    0x800 /* override gid returned from server    */
+#define CIFS_MOUNT_DYNPERM      0x1000 /* allow in-memory only mode setting   */
+#define CIFS_MOUNT_NOPOSIXBRL   0x2000 /* mandatory not posix byte range lock */
+#define CIFS_MOUNT_NOSSYNC      0x4000 /* don't do slow SMBflush on every sync*/
+#define CIFS_MOUNT_FSCACHE	0x8000 /* local caching enabled */
+#define CIFS_MOUNT_MF_SYMLINKS	0x10000 /* Minshall+French Symlinks enabled */
+#define CIFS_MOUNT_MULTIUSER	0x20000 /* multiuser mount */
+#define CIFS_MOUNT_STRICT_IO	0x40000 /* strict cache mode */
+#define CIFS_MOUNT_RWPIDFORWARD	0x80000 /* use pid forwarding for rw */
+#define CIFS_MOUNT_POSIXACL	0x100000 /* mirror of MS_POSIXACL in mnt_cifs_flags */
+#define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
+#define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
+
+struct cifs_sb_info {
+	struct rb_root tlink_tree;
+	spinlock_t tlink_tree_lock;
+	struct tcon_link *master_tlink;
+	struct nls_table *local_nls;
+	unsigned int rsize;
+	unsigned int wsize;
+	unsigned long actimeo; /* attribute cache timeout (jiffies) */
+	atomic_t active;
+	kuid_t	mnt_uid;
+	kgid_t	mnt_gid;
+	kuid_t	mnt_backupuid;
+	kgid_t	mnt_backupgid;
+	umode_t	mnt_file_mode;
+	umode_t	mnt_dir_mode;
+	unsigned int mnt_cifs_flags;
+	char   *mountdata; /* options received at mount time or via DFS refs */
+	struct backing_dev_info bdi;
+	struct delayed_work prune_tlinks;
+};
+#endif				/* _CIFS_FS_SB_H */

sources/3.9/cifs_spnego.c

+/*
+ *   fs/cifs/cifs_spnego.c -- SPNEGO upcall management for CIFS
+ *
+ *   Copyright (c) 2007 Red Hat, Inc.
+ *   Author(s): Jeff Layton (jlayton@redhat.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
+ */
+
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <keys/user-type.h>
+#include <linux/key-type.h>
+#include <linux/inet.h>
+#include "cifsglob.h"
+#include "cifs_spnego.h"
+#include "cifs_debug.h"
+
+/* create a new cifs key */
+static int
+cifs_spnego_key_instantiate(struct key *key, struct key_preparsed_payload *prep)
+{
+	char *payload;
+	int ret;
+
+	ret = -ENOMEM;
+	payload = kmalloc(prep->datalen, GFP_KERNEL);
+	if (!payload)
+		goto error;
+
+	/* attach the data */
+	memcpy(payload, prep->data, prep->datalen);
+	key->payload.data = payload;
+	ret = 0;
+
+error:
+	return ret;
+}
+
+static void
+cifs_spnego_key_destroy(struct key *key)
+{
+	kfree(key->payload.data);
+}
+
+
+/*
+ * keytype for CIFS spnego keys
+ */
+struct key_type cifs_spnego_key_type = {
+	.name		= "cifs.spnego",
+	.instantiate	= cifs_spnego_key_instantiate,
+	.match		= user_match,
+	.destroy	= cifs_spnego_key_destroy,
+	.describe	= user_describe,
+};
+
+/* length of longest version string e.g.  strlen("ver=0xFF") */
+#define MAX_VER_STR_LEN		8
+
+/* length of longest security mechanism name, eg in future could have
+ * strlen(";sec=ntlmsspi") */
+#define MAX_MECH_STR_LEN	13
+
+/* strlen of "host=" */
+#define HOST_KEY_LEN		5
+
+/* strlen of ";ip4=" or ";ip6=" */
+#define IP_KEY_LEN		5
+
+/* strlen of ";uid=0x" */
+#define UID_KEY_LEN		7
+
+/* strlen of ";creduid=0x" */
+#define CREDUID_KEY_LEN		11
+
+/* strlen of ";user=" */
+#define USER_KEY_LEN		6
+
+/* strlen of ";pid=0x" */
+#define PID_KEY_LEN		7
+
+/* get a key struct with a SPNEGO security blob, suitable for session setup */
+struct key *
+cifs_get_spnego_key(struct cifs_ses *sesInfo)
+{
+	struct TCP_Server_Info *server = sesInfo->server;
+	struct sockaddr_in *sa = (struct sockaddr_in *) &server->dstaddr;
+	struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &server->dstaddr;
+	char *description, *dp;
+	size_t desc_len;
+	struct key *spnego_key;
+	const char *hostname = server->hostname;
+
+	/* length of fields (with semicolons): ver=0xyz ip4=ipaddress
+	   host=hostname sec=mechanism uid=0xFF user=username */
+	desc_len = MAX_VER_STR_LEN +
+		   HOST_KEY_LEN + strlen(hostname) +
+		   IP_KEY_LEN + INET6_ADDRSTRLEN +
+		   MAX_MECH_STR_LEN +
+		   UID_KEY_LEN + (sizeof(uid_t) * 2) +
+		   CREDUID_KEY_LEN + (sizeof(uid_t) * 2) +
+		   PID_KEY_LEN + (sizeof(pid_t) * 2) + 1;
+
+	if (sesInfo->user_name)
+		desc_len += USER_KEY_LEN + strlen(sesInfo->user_name);
+
+	spnego_key = ERR_PTR(-ENOMEM);
+	description = kzalloc(desc_len, GFP_KERNEL);
+	if (description == NULL)
+		goto out;
+
+	dp = description;
+	/* start with version and hostname portion of UNC string */
+	spnego_key = ERR_PTR(-EINVAL);
+	sprintf(dp, "ver=0x%x;host=%s;", CIFS_SPNEGO_UPCALL_VERSION,
+		hostname);
+	dp = description + strlen(description);
+
+	/* add the server address */
+	if (server->dstaddr.ss_family == AF_INET)
+		sprintf(dp, "ip4=%pI4", &sa->sin_addr);
+	else if (server->dstaddr.ss_family == AF_INET6)
+		sprintf(dp, "ip6=%pI6", &sa6->sin6_addr);
+	else
+		goto out;
+
+	dp = description + strlen(description);
+
+	/* for now, only sec=krb5 and sec=mskrb5 are valid */
+	if (server->sec_kerberos)
+		sprintf(dp, ";sec=krb5");
+	else if (server->sec_mskerberos)
+		sprintf(dp, ";sec=mskrb5");
+	else
+		goto out;
+
+	dp = description + strlen(description);
+	sprintf(dp, ";uid=0x%x",
+		from_kuid_munged(&init_user_ns, sesInfo->linux_uid));
+
+	dp = description + strlen(description);
+	sprintf(dp, ";creduid=0x%x",
+		from_kuid_munged(&init_user_ns, sesInfo->cred_uid));
+
+	if (sesInfo->user_name) {
+		dp = description + strlen(description);
+		sprintf(dp, ";user=%s", sesInfo->user_name);
+	}
+
+	dp = description + strlen(description);
+	sprintf(dp, ";pid=0x%x", current->pid);
+
+	cFYI(1, "key description = %s", description);
+	spnego_key = request_key(&cifs_spnego_key_type, description, "");
+
+#ifdef CONFIG_CIFS_DEBUG2
+	if (cifsFYI && !IS_ERR(spnego_key)) {
+		struct cifs_spnego_msg *msg = spnego_key->payload.data;
+		cifs_dump_mem("SPNEGO reply blob:", msg->data, min(1024U,
+				msg->secblob_len + msg->sesskey_len));
+	}
+#endif /* CONFIG_CIFS_DEBUG2 */
+
+out:
+	kfree(description);
+	return spnego_key;
+}

sources/3.9/cifs_spnego.h

+/*
+ *   fs/cifs/cifs_spnego.h -- SPNEGO upcall management for CIFS
+ *
+ *   Copyright (c) 2007 Red Hat, Inc.
+ *   Author(s): Jeff Layton (jlayton@redhat.com)
+ *              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 _CIFS_SPNEGO_H
+#define _CIFS_SPNEGO_H
+
+#define CIFS_SPNEGO_UPCALL_VERSION 2
+
+/*
+ * The version field should always be set to CIFS_SPNEGO_UPCALL_VERSION.
+ * The flags field is for future use. The request-key callout should set
+ * sesskey_len and secblob_len, and then concatenate the SessKey+SecBlob
+ * and stuff it in the data field.
+ */
+struct cifs_spnego_msg {
+	uint32_t	version;
+	uint32_t	flags;
+	uint32_t	sesskey_len;
+	uint32_t	secblob_len;
+	uint8_t		data[1];
+};
+
+#ifdef __KERNEL__
+extern struct key_type cifs_spnego_key_type;
+extern struct key *cifs_get_spnego_key(struct cifs_ses *sesInfo);
+#endif /* KERNEL */
+
+#endif /* _CIFS_SPNEGO_H */

sources/3.9/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., 2000,2009
+ *
+ *   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.
+ *
+ */
+#ifndef _CIFS_UNICODE_H
+#define _CIFS_UNICODE_H
+
+#include <asm/byteorder.h>
+#include <linux/types.h>
+#include <linux/nls.h>
+
+#define  UNIUPR_NOLOWER		/* Example to not expand lower case tables */
+
+/*
+ * Windows maps these to the user defined 16 bit Unicode range since they are
+ * reserved symbols (along with \ and /), otherwise illegal to store
+ * in filenames in NTFS
+ */
+#define UNI_ASTERISK    (__u16) ('*' + 0xF000)
+#define UNI_QUESTION    (__u16) ('?' + 0xF000)
+#define UNI_COLON       (__u16) (':' + 0xF000)
+#define UNI_GRTRTHAN    (__u16) ('>' + 0xF000)
+#define UNI_LESSTHAN    (__u16) ('<' + 0xF000)
+#define UNI_PIPE        (__u16) ('|' + 0xF000)
+#define UNI_SLASH       (__u16) ('\\' + 0xF000)
+
+/* 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 CifsUniLowerTable[512];
+extern const struct UniCaseRange CifsUniLowerRange[];
+#endif				/* UNIUPR_NOLOWER */
+
+#ifdef __KERNEL__
+int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
+		    const struct nls_table *codepage, bool mapchar);
+int cifs_utf16_bytes(const __le16 *from, int maxbytes,
+		     const struct nls_table *codepage);
+int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);
+char *cifs_strndup_from_utf16(const char *src, const int maxlen,
+			      const bool is_unicode,
+			      const struct nls_table *codepage);
+extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,
+			      const struct nls_table *cp, int mapChars);
+#ifdef CONFIG_CIFS_SMB2
+extern __le16 *cifs_strndup_to_utf16(const char *src, const int maxlen,
+				     int *utf16_len, const struct nls_table *cp,
+				     int remap);
+#endif /* CONFIG_CIFS_SMB2 */
+#endif
+
+/*
+ * 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 occurrence 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(register wchar_t uc)
+{
+	register const struct UniCaseRange *rp;
+
+	if (uc < sizeof(CifsUniLowerTable)) {
+		/* Latin characters */
+		return uc + CifsUniLowerTable[uc];	/* Use base tables */
+	} else {
+		rp = CifsUniLowerRange;	/* 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
+
+#endif /* _CIFS_UNICODE_H */

sources/3.9/cifsacl.h

+/*
+ *   fs/cifs/cifsacl.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2007
+ *   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 _CIFSACL_H
+#define _CIFSACL_H
+
+
+#define NUM_AUTHS (6)	/* number of authority fields */
+#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */
+
+#define READ_BIT        0x4
+#define WRITE_BIT       0x2
+#define EXEC_BIT        0x1
+
+#define UBITSHIFT	6
+#define GBITSHIFT	3
+
+#define ACCESS_ALLOWED	0
+#define ACCESS_DENIED	1
+
+#define SIDOWNER 1
+#define SIDGROUP 2
+
+/*
+ * Security Descriptor length containing DACL with 3 ACEs (one each for
+ * owner, group and world).
+ */
+#define DEFAULT_SEC_DESC_LEN (sizeof(struct cifs_ntsd) + \
+			      sizeof(struct cifs_acl) + \
+			      (sizeof(struct cifs_ace) * 3))
+
+/*
+ * Maximum size of a string representation of a SID:
+ *
+ * The fields are unsigned values in decimal. So:
+ *
+ * u8:  max 3 bytes in decimal
+ * u32: max 10 bytes in decimal
+ *
+ * "S-" + 3 bytes for version field + 15 for authority field + NULL terminator
+ *
+ * For authority field, max is when all 6 values are non-zero and it must be
+ * represented in hex. So "-0x" + 12 hex digits.
+ *
+ * Add 11 bytes for each subauthority field (10 bytes each + 1 for '-')
+ */
+#define SID_STRING_BASE_SIZE (2 + 3 + 15 + 1)
+#define SID_STRING_SUBAUTH_SIZE (11) /* size of a single subauth string */
+
+struct cifs_ntsd {
+	__le16 revision; /* revision level */
+	__le16 type;
+	__le32 osidoffset;
+	__le32 gsidoffset;
+	__le32 sacloffset;
+	__le32 dacloffset;
+} __attribute__((packed));
+
+struct cifs_sid {
+	__u8 revision; /* revision level */
+	__u8 num_subauth;
+	__u8 authority[NUM_AUTHS];
+	__le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */
+} __attribute__((packed));
+
+/* size of a struct cifs_sid, sans sub_auth array */
+#define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS)
+
+struct cifs_acl {
+	__le16 revision; /* revision level */
+	__le16 size;
+	__le32 num_aces;
+} __attribute__((packed));
+
+struct cifs_ace {
+	__u8 type;
+	__u8 flags;
+	__le16 size;
+	__le32 access_req;
+	struct cifs_sid sid; /* ie UUID of user or group who gets these perms */
+} __attribute__((packed));
+
+#endif /* _CIFSACL_H */

sources/3.9/cifsfs.h

+/*
+ *   fs/cifs/cifsfs.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002, 2007
+ *   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
+
+/*
+ * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
+ * so that it will fit.
+ */
+static inline ino_t
+cifs_uniqueid_to_ino_t(u64 fileid)
+{
+	ino_t ino = (ino_t) fileid;
+	if (sizeof(ino_t) < sizeof(u64))
+		ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
+	return ino;
+}
+
+extern struct file_system_type cifs_fs_type;
+extern const struct address_space_operations cifs_addr_ops;
+extern const struct address_space_operations cifs_addr_ops_smallbuf;
+
+/* Functions related to super block operations */
+extern void cifs_sb_active(struct super_block *sb);
+extern void cifs_sb_deactive(struct super_block *sb);
+
+/* Functions related to inodes */
+extern const struct inode_operations cifs_dir_inode_ops;
+extern struct inode *cifs_root_iget(struct super_block *);
+extern int cifs_create(struct inode *, struct dentry *, umode_t,
+		       bool excl);
+extern int cifs_atomic_open(struct inode *, struct dentry *,
+			    struct file *, unsigned, umode_t,
+			    int *);
+extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
+				  unsigned int);
+extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
+extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
+extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
+extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
+extern int cifs_rmdir(struct inode *, struct dentry *);
+extern int cifs_rename(struct inode *, struct dentry *, struct inode *,
+		       struct dentry *);
+extern int cifs_revalidate_file_attr(struct file *filp);
+extern int cifs_revalidate_dentry_attr(struct dentry *);
+extern int cifs_revalidate_file(struct file *filp);
+extern int cifs_revalidate_dentry(struct dentry *);
+extern int cifs_invalidate_mapping(struct inode *inode);
+extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
+extern int cifs_setattr(struct dentry *, struct iattr *);
+
+extern const struct inode_operations cifs_file_inode_ops;
+extern const struct inode_operations cifs_symlink_inode_ops;
+extern const struct inode_operations cifs_dfs_referral_inode_operations;
+
+
+/* Functions related to files and directories */
+extern const struct file_operations cifs_file_ops;
+extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
+extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
+extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
+extern const struct file_operations cifs_file_direct_nobrl_ops;
+extern const struct file_operations cifs_file_strict_nobrl_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_user_readv(struct kiocb *iocb, const struct iovec *iov,
+			       unsigned long nr_segs, loff_t pos);
+extern ssize_t cifs_strict_readv(struct kiocb *iocb, const struct iovec *iov,
+				 unsigned long nr_segs, loff_t pos);
+extern ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
+				unsigned long nr_segs, loff_t pos);
+extern ssize_t cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
+				  unsigned long nr_segs, loff_t pos);
+extern int cifs_lock(struct file *, int, struct file_lock *);
+extern int cifs_fsync(struct file *, loff_t, loff_t, int);
+extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
+extern int cifs_flush(struct file *, fl_owner_t id);
+extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
+extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
+extern const 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 const struct dentry_operations cifs_dentry_ops;
+extern const struct dentry_operations cifs_ci_dentry_ops;
+
+#ifdef CONFIG_CIFS_DFS_UPCALL
+extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
+#else
+#define cifs_dfs_d_automount NULL
+#endif
+
+/* Functions related to symlinks */
+extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd);
+extern void cifs_put_link(struct dentry *direntry,
+			  struct nameidata *nd, void *);
+extern int cifs_readlink(struct dentry *direntry, char __user *buffer,
+			 int buflen);
+extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
+			const char *symname);
+extern int	cifs_removexattr(struct dentry *, const char *);
+extern int	cifs_setxattr(struct dentry *, const char *, const void *,
+			size_t, int);
+extern ssize_t	cifs_getxattr(struct dentry *, const char *, void *, size_t);
+extern ssize_t	cifs_listxattr(struct dentry *, char *, size_t);
+extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
+
+#ifdef CONFIG_CIFS_NFSD_EXPORT
+extern const struct export_operations cifs_export_ops;
+#endif /* CONFIG_CIFS_NFSD_EXPORT */
+
+#define CIFS_VERSION   "2.0"
+#endif				/* _CIFSFS_H */

sources/3.9/dns_resolve.c

+/*
+ *  fs/cifs/dns_resolve.c
+ *
+ *   Copyright (c) 2007 Igor Mammedov
+ *   Author(s): Igor Mammedov (niallain@gmail.com)
+ *              Steve French (sfrench@us.ibm.com)
+ *              Wang Lei (wang840925@gmail.com)
+ *		David Howells (dhowells@redhat.com)
+ *
+ *   Contains the CIFS DFS upcall routines used for hostname to
+ *   IP address translation.
+ *
+ *   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
+ */
+
+#include <linux/slab.h>
+#include <linux/dns_resolver.h>
+#include "dns_resolve.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+
+/**
+ * dns_resolve_server_name_to_ip - Resolve UNC server name to ip address.
+ * @unc: UNC path specifying the server
+ * @ip_addr: Where to return the IP address.
+ *
+ * The IP address will be returned in string form, and the caller is
+ * responsible for freeing it.
+ *
+ * Returns length of result on success, -ve on error.
+ */
+int
+dns_resolve_server_name_to_ip(const char *unc, char **ip_addr)
+{
+	struct sockaddr_storage ss;
+	const char *hostname, *sep;
+	char *name;
+	int len, rc;
+
+	if (!ip_addr || !unc)
+		return -EINVAL;
+
+	len = strlen(unc);
+	if (len < 3) {
+		cFYI(1, "%s: unc is too short: %s", __func__, unc);
+		return -EINVAL;
+	}
+
+	/* Discount leading slashes for cifs */
+	len -= 2;
+	hostname = unc + 2;
+
+	/* Search for server name delimiter */
+	sep = memchr(hostname, '\\', len);
+	if (sep)
+		len = sep - hostname;
+	else
+		cFYI(1, "%s: probably server name is whole unc: %s",
+		     __func__, unc);
+
+	/* Try to interpret hostname as an IPv4 or IPv6 address */
+	rc = cifs_convert_address((struct sockaddr *)&ss, hostname, len);
+	if (rc > 0)
+		goto name_is_IP_address;
+
+	/* Perform the upcall */
+	rc = dns_query(NULL, hostname, len, NULL, ip_addr, NULL);
+	if (rc < 0)
+		cFYI(1, "%s: unable to resolve: %*.*s",
+			__func__, len, len, hostname);
+	else
+		cFYI(1, "%s: resolved: %*.*s to %s",
+		     __func__, len, len, hostname, *ip_addr);
+	return rc;
+
+name_is_IP_address:
+	name = kmalloc(len + 1, GFP_KERNEL);
+	if (!name)
+		return -ENOMEM;
+	memcpy(name, hostname, len);
+	name[len] = 0;
+	cFYI(1, "%s: unc is IP, skipping dns upcall: %s", __func__, name);
+	*ip_addr = name;
+	return 0;
+}

sources/3.9/dns_resolve.h

+/*
+ *   fs/cifs/dns_resolve.h -- DNS Resolver upcall management for CIFS DFS
+ *                            Handles host name to IP address resolution
+ *
+ *   Copyright (c) International Business Machines  Corp., 2008
+ *   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 _DNS_RESOLVE_H
+#define _DNS_RESOLVE_H
+
+#ifdef __KERNEL__
+extern int dns_resolve_server_name_to_ip(const char *unc, char **ip_addr);
+#endif /* KERNEL */
+
+#endif /* _DNS_RESOLVE_H */

sources/3.9/export.c

+/*
+ *   fs/cifs/export.c
+ *
+ *   Copyright (C) International Business Machines  Corp., 2007
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   Common Internet FileSystem (CIFS) client
+ *
+ *   Operations related to support for exporting files via NFSD
+ *
+ *   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
+ */
+
+ /*
+  * See Documentation/filesystems/nfs/Exporting
+  * and examples in fs/exportfs
+  *
+  * Since cifs is a network file system, an "fsid" must be included for
+  * any nfs exports file entries which refer to cifs paths.  In addition
+  * the cifs mount must be mounted with the "serverino" option (ie use stable
+  * server inode numbers instead of locally generated temporary ones).
+  * Although cifs inodes do not use generation numbers (have generation number
+  * of zero) - the inode number alone should be good enough for simple cases
+  * in which users want to export cifs shares with NFS. The decode and encode
+  * could be improved by using a new routine which expects 64 bit inode numbers
+  * instead of the default 32 bit routines in fs/exportfs
+  *
+  */
+
+#include <linux/fs.h>
+#include <linux/exportfs.h>
+#include "cifsglob.h"
+#include "cifs_debug.h"
+#include "cifsfs.h"
+
+#ifdef CONFIG_CIFS_NFSD_EXPORT
+static struct dentry *cifs_get_parent(struct dentry *dentry)
+{
+	/* BB need to add code here eventually to enable export via NFSD */
+	cFYI(1, "get parent for %p", dentry);
+	return ERR_PTR(-EACCES);
+}
+
+const struct export_operations cifs_export_ops = {
+	.get_parent = cifs_get_parent,
+/*	Following five export operations are unneeded so far and can default:
+	.get_dentry =
+	.get_name =
+	.find_exported_dentry =
+	.decode_fh =
+	.encode_fs =  */
+};
+
+#endif /* CONFIG_CIFS_NFSD_EXPORT */
+

sources/3.9/fscache.c

+/*
+ *   fs/cifs/fscache.c - CIFS filesystem cache interface
+ *
+ *   Copyright (c) 2010 Novell, Inc.
+ *   Author(s): Suresh Jayaraman <sjayaraman@suse.de>
+ *
+ *   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
+ */
+#include "fscache.h"
+#include "cifsglob.h"
+#include "cifs_debug.h"
+#include "cifs_fs_sb.h"
+
+void cifs_fscache_get_client_cookie(struct TCP_Server_Info *server)
+{
+	server->fscache =
+		fscache_acquire_cookie(cifs_fscache_netfs.primary_index,
+				&cifs_fscache_server_index_def, server);
+	cFYI(1, "%s: (0x%p/0x%p)", __func__, server,
+			server->fscache);
+}
+
+void cifs_fscache_release_client_cookie(struct TCP_Server_Info *server)
+{
+	cFYI(1, "%s: (0x%p/0x%p)", __func__, server,
+			server->fscache);
+	fscache_relinquish_cookie(server->fscache, 0);
+	server->fscache = NULL;
+}
+
+void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon)
+{
+	struct TCP_Server_Info *server = tcon->ses->server;
+
+	tcon->fscache =
+		fscache_acquire_cookie(server->fscache,
+				&cifs_fscache_super_index_def, tcon);
+	cFYI(1, "%s: (0x%p/0x%p)", __func__, server->fscache,
+			tcon->fscache);
+}
+
+void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon)
+{
+	cFYI(1, "%s: (0x%p)", __func__, tcon->fscache);
+	fscache_relinquish_cookie(tcon->fscache, 0);
+	tcon->fscache = NULL;
+}
+
+static void cifs_fscache_enable_inode_cookie(struct inode *inode)
+{
+	struct cifsInodeInfo *cifsi = CIFS_I(inode);
+	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+
+	if (cifsi->fscache)
+		return;
+
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_FSCACHE) {
+		cifsi->fscache = fscache_acquire_cookie(tcon->fscache,
+				&cifs_fscache_inode_object_def, cifsi);
+		cFYI(1, "%s: got FH cookie (0x%p/0x%p)", __func__,
+				tcon->fscache, cifsi->fscache);
+	}
+}
+
+void cifs_fscache_release_inode_cookie(struct inode *inode)
+{
+	struct cifsInodeInfo *cifsi = CIFS_I(inode);
+
+	if (cifsi->fscache) {
+		cFYI(1, "%s: (0x%p)", __func__, cifsi->fscache);
+		fscache_relinquish_cookie(cifsi->fscache, 0);
+		cifsi->fscache = NULL;
+	}
+}
+
+static void cifs_fscache_disable_inode_cookie(struct inode *inode)
+{
+	struct cifsInodeInfo *cifsi = CIFS_I(inode);
+
+	if (cifsi->fscache) {
+		cFYI(1, "%s: (0x%p)", __func__, cifsi->fscache);
+		fscache_uncache_all_inode_pages(cifsi->fscache, inode);
+		fscache_relinquish_cookie(cifsi->fscache, 1);
+		cifsi->fscache = NULL;
+	}
+}
+
+void cifs_fscache_set_inode_cookie(struct inode *inode, struct file *filp)
+{
+	if ((filp->f_flags & O_ACCMODE) != O_RDONLY)
+		cifs_fscache_disable_inode_cookie(inode);
+	else
+		cifs_fscache_enable_inode_cookie(inode);
+}
+
+void cifs_fscache_reset_inode_cookie(struct inode *inode)
+{
+	struct cifsInodeInfo *cifsi = CIFS_I(inode);
+	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct fscache_cookie *old = cifsi->fscache;
+
+	if (cifsi->fscache) {
+		/* retire the current fscache cache and get a new one */
+		fscache_relinquish_cookie(cifsi->fscache, 1);
+
+		cifsi->fscache = fscache_acquire_cookie(
+					cifs_sb_master_tcon(cifs_sb)->fscache,
+					&cifs_fscache_inode_object_def,
+					cifsi);
+		cFYI(1, "%s: new cookie 0x%p oldcookie 0x%p",
+				__func__, cifsi->fscache, old);
+	}
+}
+
+int cifs_fscache_release_page(struct page *page, gfp_t gfp)
+{
+	if (PageFsCache(page)) {
+		struct inode *inode = page->mapping->host;
+		struct cifsInodeInfo *cifsi = CIFS_I(inode);
+
+		cFYI(1, "%s: (0x%p/0x%p)", __func__, page,
+				cifsi->fscache);
+		if (!fscache_maybe_release_page(cifsi->fscache, page, gfp))
+			return 0;
+	}
+
+	return 1;
+}
+
+static void cifs_readpage_from_fscache_complete(struct page *page, void *ctx,
+						int error)
+{
+	cFYI(1, "%s: (0x%p/%d)", __func__, page, error);
+	if (!error)
+		SetPageUptodate(page);
+	unlock_page(page);
+}
+
+/*
+ * Retrieve a page from FS-Cache
+ */
+int __cifs_readpage_from_fscache(struct inode *inode, struct page *page)
+{
+	int ret;
+
+	cFYI(1, "%s: (fsc:%p, p:%p, i:0x%p", __func__,
+			CIFS_I(inode)->fscache, page, inode);
+	ret = fscache_read_or_alloc_page(CIFS_I(inode)->fscache, page,
+					 cifs_readpage_from_fscache_complete,
+					 NULL,
+					 GFP_KERNEL);
+	switch (ret) {
+
+	case 0: /* page found in fscache, read submitted */
+		cFYI(1, "%s: submitted", __func__);
+		return ret;
+	case -ENOBUFS:	/* page won't be cached */
+	case -ENODATA:	/* page not in cache */
+		cFYI(1, "%s: %d", __func__, ret);
+		return 1;
+
+	default:
+		cERROR(1, "unknown error ret = %d", ret);
+	}
+	return ret;
+}
+
+/*
+ * Retrieve a set of pages from FS-Cache
+ */
+int __cifs_readpages_from_fscache(struct inode *inode,
+				struct address_space *mapping,
+				struct list_head *pages,
+				unsigned *nr_pages)
+{
+	int ret;
+
+	cFYI(1, "%s: (0x%p/%u/0x%p)", __func__,
+			CIFS_I(inode)->fscache, *nr_pages, inode);
+	ret = fscache_read_or_alloc_pages(CIFS_I(inode)->fscache, mapping,
+					  pages, nr_pages,
+					  cifs_readpage_from_fscache_complete,
+					  NULL,
+					  mapping_gfp_mask(mapping));
+	switch (ret) {
+	case 0:	/* read submitted to the cache for all pages */
+		cFYI(1, "%s: submitted", __func__);
+		return ret;
+
+	case -ENOBUFS:	/* some pages are not cached and can't be */
+	case -ENODATA:	/* some pages are not cached */
+		cFYI(1, "%s: no page", __func__);
+		return 1;
+
+	default:
+		cFYI(1, "unknown error ret = %d", ret);
+	}
+
+	return ret;
+}
+
+void __cifs_readpage_to_fscache(struct inode *inode, struct page *page)
+{
+	int ret;
+
+	cFYI(1, "%s: (fsc: %p, p: %p, i: %p)", __func__,
+			CIFS_I(inode)->fscache, page, inode);
+	ret = fscache_write_page(CIFS_I(inode)->fscache, page, GFP_KERNEL);
+	if (ret != 0)
+		fscache_uncache_page(CIFS_I(inode)->fscache, page);
+}
+
+void __cifs_fscache_invalidate_page(struct page *page, struct inode *inode)
+{
+	struct cifsInodeInfo *cifsi = CIFS_I(inode);
+	struct fscache_cookie *cookie = cifsi->fscache;
+
+	cFYI(1, "%s: (0x%p/0x%p)", __func__, page, cookie);
+	fscache_wait_on_page_write(cookie, page);
+	fscache_uncache_page(cookie, page);
+}
+

sources/3.9/fscache.h

+/*
+ *   fs/cifs/fscache.h - CIFS filesystem cache interface definitions
+ *
+ *   Copyright (c) 2010 Novell, Inc.
+ *   Authors(s): Suresh Jayaraman (sjayaraman@suse.de>
+ *
+ *   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 _CIFS_FSCACHE_H
+#define _CIFS_FSCACHE_H
+
+#include <linux/fscache.h>
+
+#include "cifsglob.h"
+
+#ifdef CONFIG_CIFS_FSCACHE
+
+extern struct fscache_netfs cifs_fscache_netfs;
+extern const struct fscache_cookie_def cifs_fscache_server_index_def;
+extern const struct fscache_cookie_def cifs_fscache_super_index_def;
+extern const struct fscache_cookie_def cifs_fscache_inode_object_def;
+
+extern int cifs_fscache_register(void);
+extern void cifs_fscache_unregister(void);
+
+/*
+ * fscache.c
+ */
+extern void cifs_fscache_get_client_cookie(struct TCP_Server_Info *);
+extern void cifs_fscache_release_client_cookie(struct TCP_Server_Info *);
+extern void cifs_fscache_get_super_cookie(struct cifs_tcon *);
+extern void cifs_fscache_release_super_cookie(struct cifs_tcon *);
+
+extern void cifs_fscache_release_inode_cookie(struct inode *);
+extern void cifs_fscache_set_inode_cookie(struct inode *, struct file *);
+extern void cifs_fscache_reset_inode_cookie(struct inode *);
+
+extern void __cifs_fscache_invalidate_page(struct page *, struct inode *);
+extern int cifs_fscache_release_page(struct page *page, gfp_t gfp);
+extern int __cifs_readpage_from_fscache(struct inode *, struct page *);
+extern int __cifs_readpages_from_fscache(struct inode *,
+					 struct address_space *,
+					 struct list_head *,
+					 unsigned *);
+
+extern void __cifs_readpage_to_fscache(struct inode *, struct page *);
+
+static inline void cifs_fscache_invalidate_page(struct page *page,
+					       struct inode *inode)
+{
+	if (PageFsCache(page))
+		__cifs_fscache_invalidate_page(page, inode);
+}
+
+static inline int cifs_readpage_from_fscache(struct inode *inode,
+					     struct page *page)
+{
+	if (CIFS_I(inode)->fscache)
+		return __cifs_readpage_from_fscache(inode, page);
+
+	return -ENOBUFS;
+}
+
+static inline int cifs_readpages_from_fscache(struct inode *inode,
+					      struct address_space *mapping,
+					      struct list_head *pages,
+					      unsigned *nr_pages)
+{
+	if (CIFS_I(inode)->fscache)
+		return __cifs_readpages_from_fscache(inode, mapping, pages,
+						     nr_pages);
+	return -ENOBUFS;
+}
+
+static inline void cifs_readpage_to_fscache(struct inode *inode,
+					    struct page *page)
+{
+	if (PageFsCache(page))
+		__cifs_readpage_to_fscache(inode, page);
+}
+
+#else /* CONFIG_CIFS_FSCACHE */
+static inline int cifs_fscache_register(void) { return 0; }
+static inline void cifs_fscache_unregister(void) {}
+
+static inline void
+cifs_fscache_get_client_cookie(struct TCP_Server_Info *server) {}
+static inline void
+cifs_fscache_release_client_cookie(struct TCP_Server_Info *server) {}
+static inline void cifs_fscache_get_super_cookie(struct cifs_tcon *tcon) {}
+static inline void
+cifs_fscache_release_super_cookie(struct cifs_tcon *tcon) {}
+
+static inline void cifs_fscache_release_inode_cookie(struct inode *inode) {}
+static inline void cifs_fscache_set_inode_cookie(struct inode *inode,
+						 struct file *filp) {}
+static inline void cifs_fscache_reset_inode_cookie(struct inode *inode) {}
+static inline int cifs_fscache_release_page(struct page *page, gfp_t gfp)
+{
+	return 1; /* May release page */
+}
+
+static inline void cifs_fscache_invalidate_page(struct page *page,
+			struct inode *inode) {}
+static inline int
+cifs_readpage_from_fscache(struct inode *inode, struct page *page)
+{
+	return -ENOBUFS;
+}
+
+static inline int cifs_readpages_from_fscache(struct inode *inode,
+					      struct address_space *mapping,
+					      struct list_head *pages,
+					      unsigned *nr_pages)
+{
+	return -ENOBUFS;
+}
+
+static inline void cifs_readpage_to_fscache(struct inode *inode,
+			struct page *page) {}
+
+#endif /* CONFIG_CIFS_FSCACHE */
+
+#endif /* _CIFS_FSCACHE_H */

sources/3.9/ioctl.c

+/*
+ *   fs/cifs/ioctl.c
+ *
+ *   vfs operations that deal with io control
+ *
+ *   Copyright (C) International Business Machines  Corp., 2005,2007
+ *   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
+ */
+
+#include <linux/fs.h>
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+#include "cifsfs.h"
+
+long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
+{
+	struct inode *inode = file_inode(filep);
+	int rc = -ENOTTY; /* strange error - but the precedent */
+	unsigned int xid;
+	struct cifs_sb_info *cifs_sb;
+#ifdef CONFIG_CIFS_POSIX
+	struct cifsFileInfo *pSMBFile = filep->private_data;
+	struct cifs_tcon *tcon;
+	__u64	ExtAttrBits = 0;
+	__u64	ExtAttrMask = 0;
+	__u64   caps;
+#endif /* CONFIG_CIFS_POSIX */
+
+	xid = get_xid();
+
+	cFYI(1, "ioctl file %p  cmd %u  arg %lu", filep, command, arg);
+
+	cifs_sb = CIFS_SB(inode->i_sb);
+
+	switch (command) {
+#ifdef CONFIG_CIFS_POSIX
+		case FS_IOC_GETFLAGS:
+			if (pSMBFile == NULL)
+				break;
+			tcon = tlink_tcon(pSMBFile->tlink);
+			caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
+			if (CIFS_UNIX_EXTATTR_CAP & caps) {
+				rc = CIFSGetExtAttr(xid, tcon,
+						    pSMBFile->fid.netfid,
+						    &ExtAttrBits, &ExtAttrMask);
+				if (rc == 0)
+					rc = put_user(ExtAttrBits &
+						FS_FL_USER_VISIBLE,
+						(int __user *)arg);
+			}
+			break;
+
+		case FS_IOC_SETFLAGS:
+			if (pSMBFile == NULL)
+				break;
+			tcon = tlink_tcon(pSMBFile->tlink);
+			caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
+			if (CIFS_UNIX_EXTATTR_CAP & caps) {
+				if (get_user(ExtAttrBits, (int __user *)arg)) {
+					rc = -EFAULT;
+					break;
+				}
+				/*
+				 * rc = CIFSGetExtAttr(xid, tcon,
+				 *		       pSMBFile->fid.netfid,
+				 *		       extAttrBits,
+				 *		       &ExtAttrMask);
+				 */
+			}
+			cFYI(1, "set flags not implemented yet");
+			break;
+#endif /* CONFIG_CIFS_POSIX */
+		default:
+			cFYI(1, "unsupported ioctl");
+			break;
+	}
+
+	free_xid(xid);
+	return rc;
+}

sources/3.9/ntlmssp.h

+/*
+ *   fs/cifs/ntlmssp.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002,2007
+ *   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
+ */
+
+#define NTLMSSP_SIGNATURE "NTLMSSP"
+/* Message Types */
+#define NtLmNegotiate     cpu_to_le32(1)
+#define NtLmChallenge     cpu_to_le32(2)
+#define NtLmAuthenticate  cpu_to_le32(3)
+#define UnknownMessage    cpu_to_le32(8)
+
+/* Negotiate Flags */
+#define NTLMSSP_NEGOTIATE_UNICODE         0x01 /* Text strings are unicode */
+#define NTLMSSP_NEGOTIATE_OEM             0x02 /* Text strings are in OEM */
+#define NTLMSSP_REQUEST_TARGET            0x04 /* Srv returns its auth realm */
+/* define reserved9                       0x08 */
+#define NTLMSSP_NEGOTIATE_SIGN          0x0010 /* Request signing capability */
+#define NTLMSSP_NEGOTIATE_SEAL          0x0020 /* Request confidentiality */
+#define NTLMSSP_NEGOTIATE_DGRAM         0x0040
+#define NTLMSSP_NEGOTIATE_LM_KEY        0x0080 /* Use LM session key */
+/* defined reserved 8                   0x0100 */
+#define NTLMSSP_NEGOTIATE_NTLM          0x0200 /* NTLM authentication */
+#define NTLMSSP_NEGOTIATE_NT_ONLY       0x0400 /* Lanman not allowed */
+#define NTLMSSP_ANONYMOUS               0x0800
+#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000 /* reserved6 */
+#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
+#define NTLMSSP_NEGOTIATE_LOCAL_CALL    0x4000 /* client/server same machine */
+#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN   0x8000 /* Sign. All security levels  */
+#define NTLMSSP_TARGET_TYPE_DOMAIN     0x10000
+#define NTLMSSP_TARGET_TYPE_SERVER     0x20000
+#define NTLMSSP_TARGET_TYPE_SHARE      0x40000
+#define NTLMSSP_NEGOTIATE_EXTENDED_SEC 0x80000 /* NB:not related to NTLMv2 pwd*/
+/* #define NTLMSSP_REQUEST_INIT_RESP     0x100000 */
+#define NTLMSSP_NEGOTIATE_IDENTIFY    0x100000
+#define NTLMSSP_REQUEST_ACCEPT_RESP   0x200000 /* reserved5 */
+#define NTLMSSP_REQUEST_NON_NT_KEY    0x400000
+#define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
+/* #define reserved4                 0x1000000 */
+#define NTLMSSP_NEGOTIATE_VERSION    0x2000000 /* we do not set */
+/* #define reserved3                 0x4000000 */
+/* #define reserved2                 0x8000000 */
+/* #define reserved1                0x10000000 */
+#define NTLMSSP_NEGOTIATE_128       0x20000000
+#define NTLMSSP_NEGOTIATE_KEY_XCH   0x40000000
+#define NTLMSSP_NEGOTIATE_56        0x80000000
+
+/* Define AV Pair Field IDs */
+enum av_field_type {
+	NTLMSSP_AV_EOL = 0,
+	NTLMSSP_AV_NB_COMPUTER_NAME,
+	NTLMSSP_AV_NB_DOMAIN_NAME,
+	NTLMSSP_AV_DNS_COMPUTER_NAME,
+	NTLMSSP_AV_DNS_DOMAIN_NAME,
+	NTLMSSP_AV_DNS_TREE_NAME,
+	NTLMSSP_AV_FLAGS,
+	NTLMSSP_AV_TIMESTAMP,
+	NTLMSSP_AV_RESTRICTION,
+	NTLMSSP_AV_TARGET_NAME,
+	NTLMSSP_AV_CHANNEL_BINDINGS
+};
+
+/* 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 {
+	__le16 Length;
+	__le16 MaximumLength;
+	__le32 BufferOffset;	/* offset to buffer */
+} __attribute__((packed)) SECURITY_BUFFER;
+
+typedef struct _NEGOTIATE_MESSAGE {
+	__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
+	__le32 MessageType;     /* NtLmNegotiate = 1 */
+	__le32 NegotiateFlags;
+	SECURITY_BUFFER DomainName;	/* RFC 1001 style and ASCII */
+	SECURITY_BUFFER WorkstationName;	/* RFC 1001 and ASCII */
+	/* SECURITY_BUFFER for version info not present since we
+	   do not set the version is present flag */
+	char DomainString[0];
+	/* followed by WorkstationString */
+} __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
+
+typedef struct _CHALLENGE_MESSAGE {
+	__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
+	__le32 MessageType;   /* NtLmChallenge = 2 */
+	SECURITY_BUFFER TargetName;
+	__le32 NegotiateFlags;
+	__u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
+	__u8 Reserved[8];
+	SECURITY_BUFFER TargetInfoArray;
+	/* SECURITY_BUFFER for version info not present since we
+	   do not set the version is present flag */
+} __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
+
+typedef struct _AUTHENTICATE_MESSAGE {
+	__u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
+	__le32 MessageType;  /* NtLmsAuthenticate = 3 */
+	SECURITY_BUFFER LmChallengeResponse;
+	SECURITY_BUFFER NtChallengeResponse;
+	SECURITY_BUFFER DomainName;
+	SECURITY_BUFFER UserName;
+	SECURITY_BUFFER WorkstationName;
+	SECURITY_BUFFER SessionKey;
+	__le32 NegotiateFlags;
+	/* SECURITY_BUFFER for version info not present since we
+	   do not set the version is present flag */
+	char UserString[0];
+} __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;
+
+/*
+ * Size of the session key (crypto key encrypted with the password
+ */
+
+int decode_ntlmssp_challenge(char *bcc_ptr, int blob_len, struct cifs_ses *ses);
+void build_ntlmssp_negotiate_blob(unsigned char *pbuffer, struct cifs_ses *ses);
+int build_ntlmssp_auth_blob(unsigned char *pbuffer, u16 *buflen,
+			struct cifs_ses *ses,
+			const struct nls_table *nls_cp);

sources/3.9/rfc1002pdu.h

+/*
+ *   fs/cifs/rfc1002pdu.h
+ *
+ *   Protocol Data Unit definitions for RFC 1001/1002 support
+ *
+ *   Copyright (c) International Business Machines  Corp., 2004
+ *   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
+ */
+
+/* NB: unlike smb/cifs packets, the RFC1002 structures are big endian */
+
+	/* RFC 1002 session packet types */
+#define RFC1002_SESSION_MESSAGE 0x00
+#define RFC1002_SESSION_REQUEST  0x81
+#define RFC1002_POSITIVE_SESSION_RESPONSE 0x82
+#define RFC1002_NEGATIVE_SESSION_RESPONSE 0x83
+#define RFC1002_RETARGET_SESSION_RESPONSE 0x84
+#define RFC1002_SESSION_KEEP_ALIVE 0x85
+
+	/* RFC 1002 flags (only one defined */
+#define RFC1002_LENGTH_EXTEND 0x80 /* high order bit of length (ie +64K) */
+
+struct rfc1002_session_packet {
+	__u8	type;
+	__u8	flags;
+	__u16	length;
+	union {
+		struct {
+			__u8 called_len;
+			__u8 called_name[32];
+			__u8 scope1; /* null */
+			__u8 calling_len;
+			__u8 calling_name[32];
+			__u8 scope2; /* null */
+		} __attribute__((packed)) session_req;
+		struct {
+			__u32 retarget_ip_addr;
+			__u16 port;
+		} __attribute__((packed)) retarget_resp;
+		__u8 neg_ses_resp_error_code;
+		/* POSITIVE_SESSION_RESPONSE packet does not include trailer.
+		SESSION_KEEP_ALIVE packet also does not include a trailer.
+		Trailer for the SESSION_MESSAGE packet is SMB/CIFS header */
+	} __attribute__((packed)) trailer;
+} __attribute__((packed));
+
+/* Negative Session Response error codes */
+#define RFC1002_NOT_LISTENING_CALLED  0x80 /* not listening on called name */
+#define RFC1002_NOT_LISTENING_CALLING 0x81 /* not listening on calling name */
+#define RFC1002_NOT_PRESENT           0x82 /* called name not present */
+#define RFC1002_INSUFFICIENT_RESOURCE 0x83
+#define RFC1002_UNSPECIFIED_ERROR     0x8F
+
+/* RFC 1002 Datagram service packets are not defined here as they
+are not needed for the network filesystem client unless we plan on
+implementing broadcast resolution of the server ip address (from
+server netbios name). Currently server names are resolved only via DNS
+(tcp name) or ip address or an /etc/hosts equivalent mapping to ip address.*/
+
+#define DEFAULT_CIFS_CALLED_NAME  "*SMBSERVER      "

sources/3.9/smb2file.c

+/*
+ *   fs/cifs/smb2file.c
+ *
+ *   Copyright (C) International Business Machines  Corp., 2002, 2011
+ *   Author(s): Steve French (sfrench@us.ibm.com),
+ *              Pavel Shilovsky ((pshilovsky@samba.org) 2012
+ *
+ *   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
+ */
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <asm/div64.h>
+#include "cifsfs.h"
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+#include "cifs_fs_sb.h"
+#include "cifs_unicode.h"
+#include "fscache.h"
+#include "smb2proto.h"
+
+void
+smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock)
+{
+	oplock &= 0xFF;
+	if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
+		return;
+	if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
+		cinode->clientCanCacheAll = true;
+		cinode->clientCanCacheRead = true;
+		cFYI(1, "Exclusive Oplock granted on inode %p",
+		     &cinode->vfs_inode);
+	} else if (oplock == SMB2_OPLOCK_LEVEL_II) {
+		cinode->clientCanCacheAll = false;
+		cinode->clientCanCacheRead = true;
+		cFYI(1, "Level II Oplock granted on inode %p",
+		    &cinode->vfs_inode);
+	} else {
+		cinode->clientCanCacheAll = false;
+		cinode->clientCanCacheRead = false;
+	}
+}
+
+int
+smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon, const char *path,
+	       int disposition, int desired_access, int share_access,
+	       int create_options, struct cifs_fid *fid, __u32 *oplock,
+	       FILE_ALL_INFO *buf, struct cifs_sb_info *cifs_sb)
+{
+	int rc;
+	__le16 *smb2_path;
+	struct smb2_file_all_info *smb2_data = NULL;
+	__u8 smb2_oplock[17];
+
+	smb2_path = cifs_convert_path_to_utf16(path, cifs_sb);
+	if (smb2_path == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
+			    GFP_KERNEL);
+	if (smb2_data == NULL) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	desired_access |= FILE_READ_ATTRIBUTES;
+	*smb2_oplock = SMB2_OPLOCK_LEVEL_EXCLUSIVE;
+
+	if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
+		memcpy(smb2_oplock + 1, fid->lease_key, SMB2_LEASE_KEY_SIZE);
+
+	rc = SMB2_open(xid, tcon, smb2_path, &fid->persistent_fid,
+		       &fid->volatile_fid, desired_access, share_access,
+		       disposition, 0, 0, smb2_oplock, smb2_data);
+	if (rc)
+		goto out;
+
+	if (buf) {
+		/* open response does not have IndexNumber field - get it */
+		rc = SMB2_get_srv_num(xid, tcon, fid->persistent_fid,
+				      fid->volatile_fid,
+				      &smb2_data->IndexNumber);
+		if (rc) {
+			/* let get_inode_info disable server inode numbers */
+			smb2_data->IndexNumber = 0;
+			rc = 0;
+		}
+		move_smb2_info_to_cifs(buf, smb2_data);
+	}
+
+	*oplock = *smb2_oplock;
+out:
+	kfree(smb2_data);
+	kfree(smb2_path);
+	return rc;
+}
+
+int
+smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
+		  const unsigned int xid)
+{
+	int rc = 0, stored_rc;
+	unsigned int max_num, num = 0, max_buf;
+	struct smb2_lock_element *buf, *cur;
+	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
+	struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
+	struct cifsLockInfo *li, *tmp;
+	__u64 length = 1 + flock->fl_end - flock->fl_start;
+	struct list_head tmp_llist;
+
+	INIT_LIST_HEAD(&tmp_llist);
+
+	/*
+	 * Accessing maxBuf is racy with cifs_reconnect - need to store value
+	 * and check it for zero before using.
+	 */
+	max_buf = tcon->ses->server->maxBuf;
+	if (!max_buf)
+		return -EINVAL;
+
+	max_num = max_buf / sizeof(struct smb2_lock_element);
+	buf = kzalloc(max_num * sizeof(struct smb2_lock_element), GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	cur = buf;
+
+	down_write(&cinode->lock_sem);
+	list_for_each_entry_safe(li, tmp, &cfile->llist->locks, llist) {
+		if (flock->fl_start > li->offset ||
+		    (flock->fl_start + length) <
+		    (li->offset + li->length))
+			continue;
+		if (current->tgid != li->pid)
+			continue;
+		if (cinode->can_cache_brlcks) {
+			/*
+			 * We can cache brlock requests - simply remove a lock
+			 * from the file's list.
+			 */
+			list_del(&li->llist);
+			cifs_del_lock_waiters(li);
+			kfree(li);
+			continue;
+		}
+		cur->Length = cpu_to_le64(li->length);
+		cur->Offset = cpu_to_le64(li->offset);
+		cur->Flags = cpu_to_le32(SMB2_LOCKFLAG_UNLOCK);
+		/*
+		 * We need to save a lock here to let us add it again to the
+		 * file's list if the unlock range request fails on the server.
+		 */
+		list_move(&li->llist, &tmp_llist);
+		if (++num == max_num) {
+			stored_rc = smb2_lockv(xid, tcon,
+					       cfile->fid.persistent_fid,
+					       cfile->fid.volatile_fid,
+					       current->tgid, num, buf);
+			if (stored_rc) {
+				/*
+				 * We failed on the unlock range request - add
+				 * all locks from the tmp list to the head of
+				 * the file's list.
+				 */
+				cifs_move_llist(&tmp_llist,
+						&cfile->llist->locks);
+				rc = stored_rc;
+			} else
+				/*
+				 * The unlock range request succeed - free the
+				 * tmp list.
+				 */
+				cifs_free_llist(&tmp_llist);
+			cur = buf;
+			num = 0;
+		} else
+			cur++;
+	}
+	if (num) {
+		stored_rc = smb2_lockv(xid, tcon, cfile->fid.persistent_fid,
+				       cfile->fid.volatile_fid, current->tgid,
+				       num, buf);
+		if (stored_rc) {
+			cifs_move_llist(&tmp_llist, &cfile->llist->locks);
+			rc = stored_rc;
+		} else
+			cifs_free_llist(&tmp_llist);
+	}
+	up_write(&cinode->lock_sem);
+
+	kfree(buf);
+	return rc;
+}
+
+static int
+smb2_push_mand_fdlocks(struct cifs_fid_locks *fdlocks, const unsigned int xid,
+		       struct smb2_lock_element *buf, unsigned int max_num)
+{
+	int rc = 0, stored_rc;
+	struct cifsFileInfo *cfile = fdlocks->cfile;
+	struct cifsLockInfo *li;
+	unsigned int num = 0;
+	struct smb2_lock_element *cur = buf;
+	struct cifs_tcon *tcon = tlink_tcon(cfile->tlink);
+
+	list_for_each_entry(li, &fdlocks->locks, llist) {
+		cur->Length = cpu_to_le64(li->length);
+		cur->Offset = cpu_to_le64(li->offset);
+		cur->Flags = cpu_to_le32(li->type |
+						SMB2_LOCKFLAG_FAIL_IMMEDIATELY);
+		if (++num == max_num) {
+			stored_rc = smb2_lockv(xid, tcon,
+					       cfile->fid.persistent_fid,
+					       cfile->fid.volatile_fid,
+					       current->tgid, num, buf);
+			if (stored_rc)
+				rc = stored_rc;
+			cur = buf;
+			num = 0;
+		} else
+			cur++;
+	}
+	if (num) {
+		stored_rc = smb2_lockv(xid, tcon,
+				       cfile->fid.persistent_fid,
+				       cfile->fid.volatile_fid,
+				       current->tgid, num, buf);
+		if (stored_rc)
+			rc = stored_rc;
+	}
+
+	return rc;
+}
+
+int
+smb2_push_mandatory_locks(struct cifsFileInfo *cfile)
+{
+	int rc = 0, stored_rc;
+	unsigned int xid;
+	unsigned int max_num, max_buf;
+	struct smb2_lock_element *buf;
+	struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
+	struct cifs_fid_locks *fdlocks;
+
+	xid = get_xid();
+
+	/*
+	 * Accessing maxBuf is racy with cifs_reconnect - need to store value
+	 * and check it for zero before using.
+	 */
+	max_buf = tlink_tcon(cfile->tlink)->ses->server->maxBuf;
+	if (!max_buf) {
+		free_xid(xid);
+		return -EINVAL;
+	}
+
+	max_num = max_buf / sizeof(struct smb2_lock_element);
+	buf = kzalloc(max_num * sizeof(struct smb2_lock_element), GFP_KERNEL);
+	if (!buf) {
+		free_xid(xid);
+		return -ENOMEM;
+	}
+
+	list_for_each_entry(fdlocks, &cinode->llist, llist) {
+		stored_rc = smb2_push_mand_fdlocks(fdlocks, xid, buf, max_num);
+		if (stored_rc)
+			rc = stored_rc;
+	}
+
+	kfree(buf);
+	free_xid(xid);
+	return rc;
+}

sources/3.9/smb2glob.h

+/*
+ *   fs/cifs/smb2glob.h
+ *
+ *   Definitions for various global variables and structures
+ *
+ *   Copyright (C) International Business Machines  Corp., 2002, 2011
+ *                 Etersoft, 2012
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *              Jeremy Allison (jra@samba.org)
+ *              Pavel Shilovsky (pshilovsky@samba.org) 2012
+ *
+ *   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 _SMB2_GLOB_H
+#define _SMB2_GLOB_H
+
+#define SMB2_MAGIC_NUMBER 0xFE534D42
+
+/*
+ *****************************************************************
+ * Constants go here
+ *****************************************************************
+ */
+
+/*
+ * Identifiers for functions that use the open, operation, close pattern
+ * in smb2inode.c:smb2_open_op_close()
+ */
+#define SMB2_OP_SET_DELETE 1
+#define SMB2_OP_SET_INFO 2
+#define SMB2_OP_QUERY_INFO 3
+#define SMB2_OP_QUERY_DIR 4
+#define SMB2_OP_MKDIR 5
+#define SMB2_OP_RENAME 6
+#define SMB2_OP_DELETE 7
+#define SMB2_OP_HARDLINK 8
+#define SMB2_OP_SET_EOF 9
+
+/* Used when constructing chained read requests. */
+#define CHAINED_REQUEST 1
+#define START_OF_CHAIN 2
+#define END_OF_CHAIN 4
+#define RELATED_REQUEST 8
+
+#define SMB2_SIGNATURE_SIZE (16)
+#define SMB2_NTLMV2_SESSKEY_SIZE (16)
+#define SMB2_HMACSHA256_SIZE (32)
+
+#endif	/* _SMB2_GLOB_H */

sources/3.9/smb2inode.c

+/*
+ *   fs/cifs/smb2inode.c
+ *
+ *   Copyright (C) International Business Machines  Corp., 2002, 2011
+ *                 Etersoft, 2012
+ *   Author(s): Pavel Shilovsky (pshilovsky@samba.org),
+ *              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
+ */
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <asm/div64.h>
+#include "cifsfs.h"
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "cifs_debug.h"
+#include "cifs_fs_sb.h"
+#include "cifs_unicode.h"
+#include "fscache.h"
+#include "smb2glob.h"
+#include "smb2pdu.h"
+#include "smb2proto.h"
+
+static int
+smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
+		   struct cifs_sb_info *cifs_sb, const char *full_path,
+		   __u32 desired_access, __u32 create_disposition,
+		   __u32 file_attributes, __u32 create_options,
+		   void *data, int command)
+{
+	int rc, tmprc = 0;
+	u64 persistent_fid, volatile_fid;
+	__le16 *utf16_path;
+	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+
+	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
+	if (!utf16_path)
+		return -ENOMEM;
+
+	rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
+		       desired_access, FILE_SHARE_ALL, create_disposition,
+		       file_attributes, create_options, &oplock, NULL);
+	if (rc) {
+		kfree(utf16_path);
+		return rc;
+	}
+
+	switch (command) {
+	case SMB2_OP_DELETE:
+		break;
+	case SMB2_OP_QUERY_INFO:
+		tmprc = SMB2_query_info(xid, tcon, persistent_fid,
+					volatile_fid,
+					(struct smb2_file_all_info *)data);
+		break;
+	case SMB2_OP_MKDIR:
+		/*
+		 * Directories are created through parameters in the
+		 * SMB2_open() call.
+		 */
+		break;
+	case SMB2_OP_RENAME:
+		tmprc = SMB2_rename(xid, tcon, persistent_fid, volatile_fid,
+				    (__le16 *)data);
+		break;
+	case SMB2_OP_HARDLINK:
+		tmprc = SMB2_set_hardlink(xid, tcon, persistent_fid,
+					  volatile_fid, (__le16 *)data);
+		break;
+	case SMB2_OP_SET_EOF:
+		tmprc = SMB2_set_eof(xid, tcon, persistent_fid, volatile_fid,
+				     current->tgid, (__le64 *)data);
+		break;
+	case SMB2_OP_SET_INFO:
+		tmprc = SMB2_set_info(xid, tcon, persistent_fid, volatile_fid,
+				      (FILE_BASIC_INFO *)data);
+		break;
+	default:
+		cERROR(1, "Invalid command");
+		break;
+	}
+
+	rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
+	if (tmprc)
+		rc = tmprc;
+	kfree(utf16_path);
+	return rc;
+}
+
+void
+move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
+{
+	memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
+	dst->CurrentByteOffset = src->CurrentByteOffset;
+	dst->Mode = src->Mode;
+	dst->AlignmentRequirement = src->AlignmentRequirement;
+	dst->IndexNumber1 = 0; /* we don't use it */
+}
+
+int
+smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
+		     struct cifs_sb_info *cifs_sb, const char *full_path,
+		     FILE_ALL_INFO *data, bool *adjust_tz)
+{
+	int rc;
+	struct smb2_file_all_info *smb2_data;
+
+	*adjust_tz = false;
+
+	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
+			    GFP_KERNEL);
+	if (smb2_data == NULL)
+		return -ENOMEM;
+
+	rc = smb2_open_op_close(xid, tcon, cifs_sb, full_path,
+				FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0,
+				smb2_data, SMB2_OP_QUERY_INFO);
+	if (rc)
+		goto out;
+
+	move_smb2_info_to_cifs(data, smb2_data);
+out:
+	kfree(smb2_data);
+	return rc;
+}
+
+int
+smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
+	   struct cifs_sb_info *cifs_sb)
+{
+	return smb2_open_op_close(xid, tcon, cifs_sb, name,
+				  FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0,
+				  CREATE_NOT_FILE, NULL, SMB2_OP_MKDIR);
+}
+
+void
+smb2_mkdir_setinfo(struct inode *inode, const char *name,
+		   struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
+		   const unsigned int xid)
+{
+	FILE_BASIC_INFO data;
+	struct cifsInodeInfo *cifs_i;
+	u32 dosattrs;
+	int tmprc;
+
+	memset(&data, 0, sizeof(data));
+	cifs_i = CIFS_I(inode);
+	dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
+	data.Attributes = cpu_to_le32(dosattrs);
+	tmprc = smb2_open_op_close(xid, tcon, cifs_sb, name,
+				   FILE_WRITE_ATTRIBUTES, FILE_CREATE, 0,
+				   CREATE_NOT_FILE, &data, SMB2_OP_SET_INFO);
+	if (tmprc == 0)
+		cifs_i->cifsAttrs = dosattrs;
+}
+
+int
+smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
+	   struct cifs_sb_info *cifs_sb)
+{
+	return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
+				  0, CREATE_NOT_FILE | CREATE_DELETE_ON_CLOSE,
+				  NULL, SMB2_OP_DELETE);
+}
+
+int
+smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
+	    struct cifs_sb_info *cifs_sb)
+{
+	return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
+				  0, CREATE_DELETE_ON_CLOSE, NULL,
+				  SMB2_OP_DELETE);
+}
+
+static int
+smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
+		   const char *from_name, const char *to_name,
+		   struct cifs_sb_info *cifs_sb, __u32 access, int command)
+{
+	__le16 *smb2_to_name = NULL;
+	int rc;
+
+	smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
+	if (smb2_to_name == NULL) {
+		rc = -ENOMEM;
+		goto smb2_rename_path;
+	}
+
+	rc = smb2_open_op_close(xid, tcon, cifs_sb, from_name, access,
+				FILE_OPEN, 0, 0, smb2_to_name, command);
+smb2_rename_path:
+	kfree(smb2_to_name);
+	return rc;
+}
+
+int
+smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
+		 const char *from_name, const char *to_name,
+		 struct cifs_sb_info *cifs_sb)
+{
+	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
+				  DELETE, SMB2_OP_RENAME);
+}
+
+int
+smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
+		     const char *from_name, const char *to_name,
+		     struct cifs_sb_info *cifs_sb)
+{
+	return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
+				  FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK);
+}
+
+int
+smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
+		   const char *full_path, __u64 size,
+		   struct cifs_sb_info *cifs_sb, bool set_alloc)
+{
+	__le64 eof = cpu_to_le64(size);
+	return smb2_open_op_close(xid, tcon, cifs_sb, full_path,
+				  FILE_WRITE_DATA, FILE_OPEN, 0, 0, &eof,
+				  SMB2_OP_SET_EOF);
+}
+
+int
+smb2_set_file_info(struct inode *inode, const char *full_path,
+		   FILE_BASIC_INFO *buf, const unsigned int xid)
+{
+	struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+	struct tcon_link *tlink;
+	int rc;
+
+	tlink = cifs_sb_tlink(cifs_sb);
+	if (IS_ERR(tlink))
+		return PTR_ERR(tlink);
+	rc = smb2_open_op_close(xid, tlink_tcon(tlink), cifs_sb, full_path,
+				FILE_WRITE_ATTRIBUTES, FILE_OPEN, 0, 0, buf,
+				SMB2_OP_SET_INFO);
+	cifs_put_tlink(tlink);
+	return rc;
+}

sources/3.9/smb2proto.h

+/*
+ *   fs/cifs/smb2proto.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002, 2011
+ *                 Etersoft, 2012
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *              Pavel Shilovsky (pshilovsky@samba.org) 2012
+ *
+ *   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 _SMB2PROTO_H
+#define _SMB2PROTO_H
+#include <linux/nls.h>
+#include <linux/key-type.h>
+
+struct statfs;
+struct smb_rqst;
+
+/*
+ *****************************************************************
+ * All Prototypes
+ *****************************************************************
+ */
+extern int map_smb2_to_linux_error(char *buf, bool log_err);
+extern int smb2_check_message(char *buf, unsigned int length);
+extern unsigned int smb2_calc_size(void *buf);
+extern char *smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr);
+extern __le16 *cifs_convert_path_to_utf16(const char *from,
+					  struct cifs_sb_info *cifs_sb);
+
+extern int smb2_verify_signature(struct smb_rqst *, struct TCP_Server_Info *);
+extern int smb2_check_receive(struct mid_q_entry *mid,
+			      struct TCP_Server_Info *server, bool log_error);
+extern struct mid_q_entry *smb2_setup_request(struct cifs_ses *ses,
+			      struct smb_rqst *rqst);
+extern struct mid_q_entry *smb2_setup_async_request(
+			struct TCP_Server_Info *server, struct smb_rqst *rqst);
+extern int smb2_calc_signature(struct smb_rqst *rqst,
+				struct TCP_Server_Info *server);
+extern int smb3_calc_signature(struct smb_rqst *rqst,
+				struct TCP_Server_Info *server);
+extern void smb2_echo_request(struct work_struct *work);
+extern __le32 smb2_get_lease_state(struct cifsInodeInfo *cinode);
+extern __u8 smb2_map_lease_to_oplock(__le32 lease_state);
+extern bool smb2_is_valid_oplock_break(char *buffer,
+				       struct TCP_Server_Info *srv);
+
+extern void move_smb2_info_to_cifs(FILE_ALL_INFO *dst,
+				   struct smb2_file_all_info *src);
+extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
+				struct cifs_sb_info *cifs_sb,
+				const char *full_path, FILE_ALL_INFO *data,
+				bool *adjust_tz);
+extern int smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
+			      const char *full_path, __u64 size,
+			      struct cifs_sb_info *cifs_sb, bool set_alloc);
+extern int smb2_set_file_info(struct inode *inode, const char *full_path,
+			      FILE_BASIC_INFO *buf, const unsigned int xid);
+extern int smb2_mkdir(const unsigned int xid, struct cifs_tcon *tcon,
+		      const char *name, struct cifs_sb_info *cifs_sb);
+extern void smb2_mkdir_setinfo(struct inode *inode, const char *full_path,
+			       struct cifs_sb_info *cifs_sb,
+			       struct cifs_tcon *tcon, const unsigned int xid);
+extern int smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
+		      const char *name, struct cifs_sb_info *cifs_sb);
+extern int smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon,
+		       const char *name, struct cifs_sb_info *cifs_sb);
+extern int smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
+			    const char *from_name, const char *to_name,
+			    struct cifs_sb_info *cifs_sb);
+extern int smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
+				const char *from_name, const char *to_name,
+				struct cifs_sb_info *cifs_sb);
+
+extern int smb2_open_file(const unsigned int xid, struct cifs_tcon *tcon,
+			  const char *full_path, int disposition,
+			  int desired_access, int share_access,
+			  int create_options,  struct cifs_fid *fid,
+			  __u32 *oplock, FILE_ALL_INFO *buf,
+			  struct cifs_sb_info *cifs_sb);
+extern void smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
+extern int smb2_unlock_range(struct cifsFileInfo *cfile,
+			     struct file_lock *flock, const unsigned int xid);
+extern int smb2_push_mandatory_locks(struct cifsFileInfo *cfile);
+
+/*
+ * SMB2 Worker functions - most of protocol specific implementation details
+ * are contained within these calls.
+ */
+extern int SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses);
+extern int SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses,
+			   const struct nls_table *nls_cp);
+extern int SMB2_logoff(const unsigned int xid, struct cifs_ses *ses);
+extern int SMB2_tcon(const unsigned int xid, struct cifs_ses *ses,
+		     const char *tree, struct cifs_tcon *tcon,
+		     const struct nls_table *);
+extern int SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon);
+extern int SMB2_open(const unsigned int xid, struct cifs_tcon *tcon,
+		     __le16 *path, u64 *persistent_fid, u64 *volatile_fid,
+		     __u32 desired_access, __u32 share_access,
+		     __u32 create_disposition, __u32 file_attributes,
+		     __u32 create_options, __u8 *oplock,
+		     struct smb2_file_all_info *buf);
+extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
+		      u64 persistent_file_id, u64 volatile_file_id);
+extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon,
+		      u64 persistent_file_id, u64 volatile_file_id);
+extern int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
+			   u64 persistent_file_id, u64 volatile_file_id,
+			   struct smb2_file_all_info *data);
+extern int SMB2_get_srv_num(const unsigned int xid, struct cifs_tcon *tcon,
+			    u64 persistent_fid, u64 volatile_fid,
+			    __le64 *uniqueid);
+extern int smb2_async_readv(struct cifs_readdata *rdata);
+extern int SMB2_read(const unsigned int xid, struct cifs_io_parms *io_parms,
+		     unsigned int *nbytes, char **buf, int *buf_type);
+extern int smb2_async_writev(struct cifs_writedata *wdata);
+extern int SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms,
+		      unsigned int *nbytes, struct kvec *iov, int n_vec);
+extern int SMB2_echo(struct TCP_Server_Info *server);
+extern int SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
+				u64 persistent_fid, u64 volatile_fid, int index,
+				struct cifs_search_info *srch_inf);
+extern int SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon,
+		       u64 persistent_fid, u64 volatile_fid,
+		       __le16 *target_file);
+extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
+			     u64 persistent_fid, u64 volatile_fid,
+			     __le16 *target_file);
+extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
+			u64 persistent_fid, u64 volatile_fid, u32 pid,
+			__le64 *eof);
+extern int SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon,
+			 u64 persistent_fid, u64 volatile_fid,
+			 FILE_BASIC_INFO *buf);
+extern int SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon,
+			     const u64 persistent_fid, const u64 volatile_fid,
+			     const __u8 oplock_level);
+extern int SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon,
+			 u64 persistent_file_id, u64 volatile_file_id,
+			 struct kstatfs *FSData);
+extern int SMB2_lock(const unsigned int xid, struct cifs_tcon *tcon,
+		     const __u64 persist_fid, const __u64 volatile_fid,
+		     const __u32 pid, const __u64 length, const __u64 offset,
+		     const __u32 lockFlags, const bool wait);
+extern int smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon,
+		      const __u64 persist_fid, const __u64 volatile_fid,
+		      const __u32 pid, const __u32 num_lock,
+		      struct smb2_lock_element *buf);
+extern int SMB2_lease_break(const unsigned int xid, struct cifs_tcon *tcon,
+			    __u8 *lease_key, const __le32 lease_state);
+
+#endif			/* _SMB2PROTO_H */

sources/3.9/smb2transport.c

+/*
+ *   fs/cifs/smb2transport.c
+ *
+ *   Copyright (C) International Business Machines  Corp., 2002, 2011
+ *                 Etersoft, 2012
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *              Jeremy Allison (jra@samba.org) 2006
+ *              Pavel Shilovsky (pshilovsky@samba.org) 2012
+ *
+ *   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
+ */
+
+#include <linux/fs.h>
+#include <linux/list.h>
+#include <linux/wait.h>
+#include <linux/net.h>
+#include <linux/delay.h>
+#include <linux/uaccess.h>
+#include <asm/processor.h>
+#include <linux/mempool.h>
+#include <linux/highmem.h>
+#include "smb2pdu.h"
+#include "cifsglob.h"
+#include "cifsproto.h"
+#include "smb2proto.h"
+#include "cifs_debug.h"
+#include "smb2status.h"
+#include "smb2glob.h"
+
+int
+smb2_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
+{
+	int i, rc;
+	unsigned char smb2_signature[SMB2_HMACSHA256_SIZE];
+	unsigned char *sigptr = smb2_signature;
+	struct kvec *iov = rqst->rq_iov;
+	int n_vec = rqst->rq_nvec;
+	struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)iov[0].iov_base;
+
+	memset(smb2_signature, 0x0, SMB2_HMACSHA256_SIZE);
+	memset(smb2_pdu->Signature, 0x0, SMB2_SIGNATURE_SIZE);
+
+	rc = crypto_shash_setkey(server->secmech.hmacsha256,
+		server->session_key.response, SMB2_NTLMV2_SESSKEY_SIZE);
+	if (rc) {
+		cERROR(1, "%s: Could not update with response\n", __func__);
+		return rc;
+	}
+
+	rc = crypto_shash_init(&server->secmech.sdeschmacsha256->shash);
+	if (rc) {
+		cERROR(1, "%s: Could not init md5\n", __func__);
+		return rc;
+	}
+
+	for (i = 0; i < n_vec; i++) {
+		if (iov[i].iov_len == 0)
+			continue;
+		if (iov[i].iov_base == NULL) {
+			cERROR(1, "null iovec entry");
+			return -EIO;
+		}
+		/*
+		 * The first entry includes a length field (which does not get
+		 * signed that occupies the first 4 bytes before the header).
+		 */
+		if (i == 0) {
+			if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
+				break; /* nothing to sign or corrupt header */
+			rc =
+			crypto_shash_update(
+				&server->secmech.sdeschmacsha256->shash,
+				iov[i].iov_base + 4, iov[i].iov_len - 4);
+		} else {
+			rc =
+			crypto_shash_update(
+				&server->secmech.sdeschmacsha256->shash,
+				iov[i].iov_base, iov[i].iov_len);
+		}
+		if (rc) {
+			cERROR(1, "%s: Could not update with payload\n",
+							__func__);
+			return rc;
+		}
+	}
+
+	/* now hash over the rq_pages array */
+	for (i = 0; i < rqst->rq_npages; i++) {
+		struct kvec p_iov;
+
+		cifs_rqst_page_to_kvec(rqst, i, &p_iov);
+		crypto_shash_update(&server->secmech.sdeschmacsha256->shash,
+					p_iov.iov_base, p_iov.iov_len);
+		kunmap(rqst->rq_pages[i]);
+	}
+
+	rc = crypto_shash_final(&server->secmech.sdeschmacsha256->shash,
+				sigptr);
+	if (rc)
+		cERROR(1, "%s: Could not generate sha256 hash\n", __func__);
+
+	memcpy(smb2_pdu->Signature, sigptr, SMB2_SIGNATURE_SIZE);
+
+	return rc;
+}
+
+int
+smb3_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
+{
+	cFYI(1, "smb3 signatures not supported yet");
+	return -EOPNOTSUPP;
+}
+
+/* must be called with server->srv_mutex held */
+static int
+smb2_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server)
+{
+	int rc = 0;
+	struct smb2_hdr *smb2_pdu = rqst->rq_iov[0].iov_base;
+
+	if (!(smb2_pdu->Flags & SMB2_FLAGS_SIGNED) ||
+	    server->tcpStatus == CifsNeedNegotiate)
+		return rc;
+
+	if (!server->session_estab) {
+		strncpy(smb2_pdu->Signature, "BSRSPYL", 8);
+		return rc;
+	}
+
+	rc = server->ops->calc_signature(rqst, server);
+
+	return rc;
+}
+
+int
+smb2_verify_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server)
+{
+	unsigned int rc;
+	char server_response_sig[16];
+	struct smb2_hdr *smb2_pdu = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
+
+	if ((smb2_pdu->Command == SMB2_NEGOTIATE) ||
+	    (smb2_pdu->Command == SMB2_OPLOCK_BREAK) ||
+	    (!server->session_estab))
+		return 0;
+
+	/*
+	 * BB what if signatures are supposed to be on for session but
+	 * server does not send one? BB
+	 */
+
+	/* Do not need to verify session setups with signature "BSRSPYL " */
+	if (memcmp(smb2_pdu->Signature, "BSRSPYL ", 8) == 0)
+		cFYI(1, "dummy signature received for smb command 0x%x",
+			smb2_pdu->Command);
+
+	/*
+	 * Save off the origiginal signature so we can modify the smb and check
+	 * our calculated signature against what the server sent.
+	 */
+	memcpy(server_response_sig, smb2_pdu->Signature, SMB2_SIGNATURE_SIZE);
+
+	memset(smb2_pdu->Signature, 0, SMB2_SIGNATURE_SIZE);
+
+	mutex_lock(&server->srv_mutex);
+	rc = server->ops->calc_signature(rqst, server);
+	mutex_unlock(&server->srv_mutex);
+
+	if (rc)
+		return rc;
+
+	if (memcmp(server_response_sig, smb2_pdu->Signature,
+		   SMB2_SIGNATURE_SIZE))
+		return -EACCES;
+	else
+		return 0;
+}
+
+/*
+ * Set message id for the request. Should be called after wait_for_free_request
+ * and when srv_mutex is held.
+ */
+static inline void
+smb2_seq_num_into_buf(struct TCP_Server_Info *server, struct smb2_hdr *hdr)
+{
+	hdr->MessageId = get_next_mid(server);
+}
+
+static struct mid_q_entry *
+smb2_mid_entry_alloc(const struct smb2_hdr *smb_buffer,
+		     struct TCP_Server_Info *server)
+{
+	struct mid_q_entry *temp;
+
+	if (server == NULL) {
+		cERROR(1, "Null TCP session in smb2_mid_entry_alloc");
+		return NULL;
+	}
+
+	temp = mempool_alloc(cifs_mid_poolp, GFP_NOFS);
+	if (temp == NULL)
+		return temp;
+	else {
+		memset(temp, 0, sizeof(struct mid_q_entry));
+		temp->mid = smb_buffer->MessageId;	/* always LE */
+		temp->pid = current->pid;
+		temp->command = smb_buffer->Command;	/* Always LE */
+		temp->when_alloc = jiffies;
+		temp->server = server;
+
+		/*
+		 * The default is for the mid to be synchronous, so the
+		 * default callback just wakes up the current task.
+		 */
+		temp->callback = cifs_wake_up_task;
+		temp->callback_data = current;
+	}
+
+	atomic_inc(&midCount);
+	temp->mid_state = MID_REQUEST_ALLOCATED;
+	return temp;
+}
+
+static int
+smb2_get_mid_entry(struct cifs_ses *ses, struct smb2_hdr *buf,
+		   struct mid_q_entry **mid)
+{
+	if (ses->server->tcpStatus == CifsExiting)
+		return -ENOENT;
+
+	if (ses->server->tcpStatus == CifsNeedReconnect) {
+		cFYI(1, "tcp session dead - return to caller to retry");
+		return -EAGAIN;
+	}
+
+	if (ses->status != CifsGood) {
+		/* check if SMB2 session is bad because we are setting it up */
+		if ((buf->Command != SMB2_SESSION_SETUP) &&
+		    (buf->Command != SMB2_NEGOTIATE))
+			return -EAGAIN;
+		/* else ok - we are setting up session */
+	}
+	*mid = smb2_mid_entry_alloc(buf, ses->server);
+	if (*mid == NULL)
+		return -ENOMEM;
+	spin_lock(&GlobalMid_Lock);
+	list_add_tail(&(*mid)->qhead, &ses->server->pending_mid_q);
+	spin_unlock(&GlobalMid_Lock);
+	return 0;
+}
+
+int
+smb2_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server,
+		   bool log_error)
+{
+	unsigned int len = get_rfc1002_length(mid->resp_buf);
+	struct kvec iov;
+	struct smb_rqst rqst = { .rq_iov = &iov,
+				 .rq_nvec = 1 };
+
+	iov.iov_base = (char *)mid->resp_buf;
+	iov.iov_len = get_rfc1002_length(mid->resp_buf) + 4;
+
+	dump_smb(mid->resp_buf, min_t(u32, 80, len));
+	/* convert the length into a more usable form */
+	if ((len > 24) &&
+	    (server->sec_mode & (SECMODE_SIGN_REQUIRED|SECMODE_SIGN_ENABLED))) {
+		int rc;
+
+		rc = smb2_verify_signature(&rqst, server);
+		if (rc)
+			cERROR(1, "SMB signature verification returned error = "
+			       "%d", rc);
+	}
+
+	return map_smb2_to_linux_error(mid->resp_buf, log_error);
+}
+
+struct mid_q_entry *
+smb2_setup_request(struct cifs_ses *ses, struct smb_rqst *rqst)
+{
+	int rc;
+	struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
+	struct mid_q_entry *mid;
+
+	smb2_seq_num_into_buf(ses->server, hdr);
+
+	rc = smb2_get_mid_entry(ses, hdr, &mid);
+	if (rc)
+		return ERR_PTR(rc);
+	rc = smb2_sign_rqst(rqst, ses->server);
+	if (rc) {
+		cifs_delete_mid(mid);
+		return ERR_PTR(rc);
+	}
+	return mid;
+}
+
+struct mid_q_entry *
+smb2_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst)
+{
+	int rc;
+	struct smb2_hdr *hdr = (struct smb2_hdr *)rqst->rq_iov[0].iov_base;
+	struct mid_q_entry *mid;
+
+	smb2_seq_num_into_buf(server, hdr);
+
+	mid = smb2_mid_entry_alloc(hdr, server);
+	if (mid == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	rc = smb2_sign_rqst(rqst, server);
+	if (rc) {
+		DeleteMidQEntry(mid);
+		return ERR_PTR(rc);
+	}
+
+	return mid;
+}

sources/3.9/smbencrypt.c

+/*
+   Unix SMB/Netbios implementation.
+   Version 1.9.
+   SMB parameters and setup
+   Copyright (C) Andrew Tridgell 1992-2000
+   Copyright (C) Luke Kenneth Casson Leighton 1996-2000
+   Modified by Jeremy Allison 1995.
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003
+   Modified by Steve French (sfrench@us.ibm.com) 2002-2003
+
+   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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include "cifs_unicode.h"
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifs_debug.h"
+#include "cifsproto.h"
+
+#ifndef false
+#define false 0
+#endif
+#ifndef true
+#define true 1
+#endif
+
+/* following came from the other byteorder.h to avoid include conflicts */
+#define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
+#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
+#define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val)))
+
+static void
+str_to_key(unsigned char *str, unsigned char *key)
+{
+	int i;
+
+	key[0] = str[0] >> 1;
+	key[1] = ((str[0] & 0x01) << 6) | (str[1] >> 2);
+	key[2] = ((str[1] & 0x03) << 5) | (str[2] >> 3);
+	key[3] = ((str[2] & 0x07) << 4) | (str[3] >> 4);
+	key[4] = ((str[3] & 0x0F) << 3) | (str[4] >> 5);
+	key[5] = ((str[4] & 0x1F) << 2) | (str[5] >> 6);
+	key[6] = ((str[5] & 0x3F) << 1) | (str[6] >> 7);
+	key[7] = str[6] & 0x7F;
+	for (i = 0; i < 8; i++)
+		key[i] = (key[i] << 1);
+}
+
+static int
+smbhash(unsigned char *out, const unsigned char *in, unsigned char *key)
+{
+	int rc;
+	unsigned char key2[8];
+	struct crypto_blkcipher *tfm_des;
+	struct scatterlist sgin, sgout;
+	struct blkcipher_desc desc;
+
+	str_to_key(key, key2);
+
+	tfm_des = crypto_alloc_blkcipher("ecb(des)", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm_des)) {
+		rc = PTR_ERR(tfm_des);
+		cERROR(1, "could not allocate des crypto API");
+		goto smbhash_err;
+	}
+
+	desc.tfm = tfm_des;
+
+	crypto_blkcipher_setkey(tfm_des, key2, 8);
+
+	sg_init_one(&sgin, in, 8);
+	sg_init_one(&sgout, out, 8);
+
+	rc = crypto_blkcipher_encrypt(&desc, &sgout, &sgin, 8);
+	if (rc)
+		cERROR(1, "could not encrypt crypt key rc: %d", rc);
+
+	crypto_free_blkcipher(tfm_des);
+smbhash_err:
+	return rc;
+}
+
+static int
+E_P16(unsigned char *p14, unsigned char *p16)
+{
+	int rc;
+	unsigned char sp8[8] =
+	    { 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 };
+
+	rc = smbhash(p16, sp8, p14);
+	if (rc)
+		return rc;
+	rc = smbhash(p16 + 8, sp8, p14 + 7);
+	return rc;
+}
+
+static int
+E_P24(unsigned char *p21, const unsigned char *c8, unsigned char *p24)
+{
+	int rc;
+
+	rc = smbhash(p24, c8, p21);
+	if (rc)
+		return rc;
+	rc = smbhash(p24 + 8, c8, p21 + 7);
+	if (rc)
+		return rc;
+	rc = smbhash(p24 + 16, c8, p21 + 14);
+	return rc;
+}
+
+/* produce a md4 message digest from data of length n bytes */
+int
+mdfour(unsigned char *md4_hash, unsigned char *link_str, int link_len)
+{
+	int rc;
+	unsigned int size;
+	struct crypto_shash *md4;
+	struct sdesc *sdescmd4;
+
+	md4 = crypto_alloc_shash("md4", 0, 0);
+	if (IS_ERR(md4)) {
+		rc = PTR_ERR(md4);
+		cERROR(1, "%s: Crypto md4 allocation error %d", __func__, rc);
+		return rc;
+	}
+	size = sizeof(struct shash_desc) + crypto_shash_descsize(md4);
+	sdescmd4 = kmalloc(size, GFP_KERNEL);
+	if (!sdescmd4) {
+		rc = -ENOMEM;
+		cERROR(1, "%s: Memory allocation failure", __func__);
+		goto mdfour_err;
+	}
+	sdescmd4->shash.tfm = md4;
+	sdescmd4->shash.flags = 0x0;
+
+	rc = crypto_shash_init(&sdescmd4->shash);
+	if (rc) {
+		cERROR(1, "%s: Could not init md4 shash", __func__);
+		goto mdfour_err;
+	}
+	rc = crypto_shash_update(&sdescmd4->shash, link_str, link_len);
+	if (rc) {
+		cERROR(1, "%s: Could not update with link_str", __func__);
+		goto mdfour_err;
+	}
+	rc = crypto_shash_final(&sdescmd4->shash, md4_hash);
+	if (rc)
+		cERROR(1, "%s: Could not genereate md4 hash", __func__);
+
+mdfour_err:
+	crypto_free_shash(md4);
+	kfree(sdescmd4);
+
+	return rc;
+}
+
+/*
+   This implements the X/Open SMB password encryption
+   It takes a password, a 8 byte "crypt key" and puts 24 bytes of
+   encrypted password into p24 */
+/* Note that password must be uppercased and null terminated */
+int
+SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24)
+{
+	int rc;
+	unsigned char p14[14], p16[16], p21[21];
+
+	memset(p14, '\0', 14);
+	memset(p16, '\0', 16);
+	memset(p21, '\0', 21);
+
+	memcpy(p14, passwd, 14);
+	rc = E_P16(p14, p16);
+	if (rc)
+		return rc;
+
+	memcpy(p21, p16, 16);
+	rc = E_P24(p21, c8, p24);
+
+	return rc;
+}
+
+/*
+ * Creates the MD4 Hash of the users password in NT UNICODE.
+ */
+
+int
+E_md4hash(const unsigned char *passwd, unsigned char *p16,
+	const struct nls_table *codepage)
+{
+	int rc;
+	int len;
+	__le16 wpwd[129];
+
+	/* Password cannot be longer than 128 characters */
+	if (passwd) /* Password must be converted to NT unicode */
+		len = cifs_strtoUTF16(wpwd, passwd, 128, codepage);
+	else {
+		len = 0;
+		*wpwd = 0; /* Ensure string is null terminated */
+	}
+
+	rc = mdfour(p16, (unsigned char *) wpwd, len * sizeof(__le16));
+	memset(wpwd, 0, 129 * sizeof(__le16));
+
+	return rc;
+}
+
+/* Does the NT MD4 hash then des encryption. */
+int
+SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24,
+		const struct nls_table *codepage)
+{
+	int rc;
+	unsigned char p16[16], p21[21];
+
+	memset(p16, '\0', 16);
+	memset(p21, '\0', 21);
+
+	rc = E_md4hash(passwd, p16, codepage);
+	if (rc) {
+		cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc);
+		return rc;
+	}
+	memcpy(p21, p16, 16);
+	rc = E_P24(p21, c8, p24);
+	return rc;
+}

sources/3.9/smberr.h

+/*
+ *   fs/cifs/smberr.h
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002,2004
+ *   Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ *   See Error Codes section of the SNIA CIFS Specification
+ *   for more information
+ *
+ *   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
+ */
+
+#define SUCCESS	0x00	/* The request was successful. */
+#define ERRDOS	0x01	/* Error is from the core DOS operating system set */
+#define ERRSRV	0x02	/* Error is generated by the file server daemon */
+#define ERRHRD	0x03	/* Error is a hardware error. */
+#define ERRCMD	0xFF	/* Command was not in the "SMB" format. */
+
+/* The following error codes may be generated with the SUCCESS error class.*/
+
+/*#define SUCCESS	0	The request was successful. */
+
+/* The following error codes may be generated with the ERRDOS error class.*/
+
+#define ERRbadfunc		1	/* Invalid function. The server did not
+					   recognize or could not perform a
+					   system call generated by the server,
+					   e.g., set the DIRECTORY attribute on
+					   a data file, invalid seek mode. */
+#define ERRbadfile		2	/* File not found. The last component
+					   of a file's pathname could not be
+					   found. */
+#define ERRbadpath		3	/* Directory invalid. A directory
+					   component in a pathname could not be
+					   found. */
+#define ERRnofids		4	/* Too many open files. The server has
+					   no file handles available. */
+#define ERRnoaccess		5	/* Access denied, the client's context
+					   does not permit the requested
+					   function. This includes the
+					   following conditions: invalid rename
+					   command, write to Fid open for read
+					   only, read on Fid open for write
+					   only, attempt to delete a non-empty
+					   directory */
+#define ERRbadfid		6	/* Invalid file handle. The file handle
+					   specified was not recognized by the
+					   server. */
+#define ERRbadmcb		7	/* Memory control blocks destroyed. */
+#define ERRnomem		8	/* Insufficient server memory to
+					   perform the requested function. */
+#define ERRbadmem		9	/* Invalid memory block address. */
+#define ERRbadenv		10	/* Invalid environment. */
+#define ERRbadformat		11	/* Invalid format. */
+#define ERRbadaccess		12	/* Invalid open mode. */
+#define ERRbaddata		13	/* Invalid data (generated only by
+					   IOCTL calls within the server). */
+#define ERRbaddrive		15	/* Invalid drive specified. */
+#define ERRremcd		16	/* A Delete Directory request attempted
+					   to remove the server's current
+					   directory. */
+#define ERRdiffdevice		17	/* Not same device (e.g., a cross
+					   volume rename was attempted */
+#define ERRnofiles		18	/* A File Search command can find no
+					   more files matching the specified
+					   criteria. */
+#define ERRwriteprot		19	/* media is write protected */
+#define ERRgeneral		31
+#define ERRbadshare		32	/* The sharing mode specified for an
+					   Open conflicts with existing FIDs on
+					   the file. */
+#define ERRlock			33	/* A Lock request conflicted with an
+					   existing lock or specified an
+					   invalid mode, or an Unlock requested
+					   attempted to remove a lock held by
+					   another process. */
+#define ERRunsup		50
+#define ERRnosuchshare		67
+#define ERRfilexists		80	/* The file named in the request
+					   already exists. */
+#define ERRinvparm		87
+#define ERRdiskfull		112
+#define ERRinvname		123
+#define ERRinvlevel		124
+#define ERRdirnotempty		145
+#define ERRnotlocked		158
+#define ERRcancelviolation	173
+#define ERRalreadyexists	183
+#define ERRbadpipe		230
+#define ERRpipebusy		231
+#define ERRpipeclosing		232
+#define ERRnotconnected		233
+#define ERRmoredata		234
+#define ERReasnotsupported	282
+#define ErrQuota		0x200	/* The operation would cause a quota
+					   limit to be exceeded. */
+#define ErrNotALink		0x201	/* A link operation was performed on a
+					   pathname that was not a link. */
+
+/* Below errors are used internally (do not come over the wire) for passthrough
+   from STATUS codes to POSIX only  */
+#define ERRsymlink              0xFFFD
+#define ErrTooManyLinks         0xFFFE
+
+/* Following error codes may be generated with the ERRSRV error class.*/
+
+#define ERRerror		1	/* Non-specific error code. It is
+					   returned under the following
+					   conditions: resource other than disk
+					   space exhausted (e.g. TIDs), first
+					   SMB command was not negotiate,
+					   multiple negotiates attempted, and
+					   internal server error. */
+#define ERRbadpw		2	/* Bad password - name/password pair in
+					   a TreeConnect or Session Setup are
+					   invalid. */
+#define ERRbadtype		3	/* used for indicating DFS referral
+					   needed */
+#define ERRaccess		4	/* The client does not have the
+					   necessary access rights within the
+					   specified context for requested
+					   function. */
+#define ERRinvtid		5	/* The Tid specified in a command was
+					   invalid. */
+#define ERRinvnetname		6	/* Invalid network name in tree
+					   connect. */
+#define ERRinvdevice		7	/* Invalid device - printer request
+					   made to non-printer connection or
+					   non-printer request made to printer
+					   connection. */
+#define ERRqfull		49	/* Print queue full (files) -- returned
+					   by open print file. */
+#define ERRqtoobig		50	/* Print queue full -- no space. */
+#define ERRqeof			51	/* EOF on print queue dump */
+#define ERRinvpfid		52	/* Invalid print file FID. */
+#define ERRsmbcmd		64	/* The server did not recognize the
+					   command received. */
+#define ERRsrverror		65	/* The server encountered an internal
+					   error, e.g., system file
+					   unavailable. */
+#define ERRbadBID		66	/* (obsolete) */
+#define ERRfilespecs		67	/* The Fid and pathname parameters
+					   contained an invalid combination of
+					   values. */
+#define ERRbadLink		68	/* (obsolete) */
+#define ERRbadpermits		69	/* The access permissions specified for
+					   a file or directory are not a valid
+					   combination. */
+#define ERRbadPID		70
+#define ERRsetattrmode		71	/* attribute (mode) is invalid */
+#define ERRpaused		81	/* Server is paused */
+#define ERRmsgoff		82	/* reserved - messaging off */
+#define ERRnoroom		83	/* reserved - no room for message */
+#define ERRrmuns		87	/* reserved - too many remote names */
+#define ERRtimeout		88	/* operation timed out */
+#define ERRnoresource		89	/* No resources available for request
+					   */
+#define ERRtoomanyuids		90	/* Too many UIDs active on this session
+					   */
+#define ERRbaduid		91	/* The UID is not known as a valid user
+					   */
+#define ERRusempx		250	/* temporarily unable to use raw */
+#define ERRusestd		251	/* temporarily unable to use either raw
+					   or mpx */
+#define ERR_NOTIFY_ENUM_DIR	1024
+#define ERRnoSuchUser		2238	/* user account does not exist */
+#define ERRaccountexpired	2239
+#define ERRbadclient		2240	/* can not logon from this client */
+#define ERRbadLogonTime		2241	/* logon hours do not allow this */
+#define ERRpasswordExpired	2242
+#define ERRnetlogonNotStarted	2455
+#define ERRnosupport		0xFFFF

sources/3.9/smbfsctl.h

+/*
+ *   fs/cifs/smbfsctl.h: SMB, CIFS, SMB2 FSCTL definitions
+ *
+ *   Copyright (c) International Business Machines  Corp., 2002,2009
+ *   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
+ */
+
+/* IOCTL information */
+/*
+ * List of ioctl/fsctl function codes that are or could be useful in the
+ * future to remote clients like cifs or SMB2 client.  There is probably
+ * a slightly larger set of fsctls that NTFS local filesystem could handle,
+ * including the seven below that we do not have struct definitions for.
+ * Even with protocol definitions for most of these now available, we still
+ * need to do some experimentation to identify which are practical to do
+ * remotely.  Some of the following, such as the encryption/compression ones
+ * could be invoked from tools via a specialized hook into the VFS rather
+ * than via the standard vfs entry points
+ */
+#define FSCTL_REQUEST_OPLOCK_LEVEL_1 0x00090000
+#define FSCTL_REQUEST_OPLOCK_LEVEL_2 0x00090004
+#define FSCTL_REQUEST_BATCH_OPLOCK   0x00090008
+#define FSCTL_LOCK_VOLUME            0x00090018
+#define FSCTL_UNLOCK_VOLUME          0x0009001C
+#define FSCTL_IS_PATHNAME_VALID      0x0009002C /* BB add struct */
+#define FSCTL_GET_COMPRESSION        0x0009003C /* BB add struct */
+#define FSCTL_SET_COMPRESSION        0x0009C040 /* BB add struct */
+#define FSCTL_QUERY_FAT_BPB          0x00090058 /* BB add struct */
+/* Verify the next FSCTL number, we had it as 0x00090090 before */
+#define FSCTL_FILESYSTEM_GET_STATS   0x00090060 /* BB add struct */
+#define FSCTL_GET_NTFS_VOLUME_DATA   0x00090064 /* BB add struct */
+#define FSCTL_GET_RETRIEVAL_POINTERS 0x00090073 /* BB add struct */
+#define FSCTL_IS_VOLUME_DIRTY        0x00090078 /* BB add struct */
+#define FSCTL_ALLOW_EXTENDED_DASD_IO 0x00090083 /* BB add struct */
+#define FSCTL_REQUEST_FILTER_OPLOCK  0x0009008C
+#define FSCTL_FIND_FILES_BY_SID      0x0009008F /* BB add struct */
+#define FSCTL_SET_OBJECT_ID          0x00090098 /* BB add struct */
+#define FSCTL_GET_OBJECT_ID          0x0009009C /* BB add struct */
+#define FSCTL_DELETE_OBJECT_ID       0x000900A0 /* BB add struct */
+#define FSCTL_SET_REPARSE_POINT      0x000900A4 /* BB add struct */
+#define FSCTL_GET_REPARSE_POINT      0x000900A8 /* BB add struct */
+#define FSCTL_DELETE_REPARSE_POINT   0x000900AC /* BB add struct */
+#define FSCTL_SET_OBJECT_ID_EXTENDED 0x000900BC /* BB add struct */
+#define FSCTL_CREATE_OR_GET_OBJECT_ID 0x000900C0 /* BB add struct */
+#define FSCTL_SET_SPARSE             0x000900C4 /* BB add struct */
+#define FSCTL_SET_ZERO_DATA          0x000900C8 /* BB add struct */
+#define FSCTL_SET_ENCRYPTION         0x000900D7 /* BB add struct */
+#define FSCTL_ENCRYPTION_FSCTL_IO    0x000900DB /* BB add struct */
+#define FSCTL_WRITE_RAW_ENCRYPTED    0x000900DF /* BB add struct */
+#define FSCTL_READ_RAW_ENCRYPTED     0x000900E3 /* BB add struct */
+#define FSCTL_READ_FILE_USN_DATA     0x000900EB /* BB add struct */
+#define FSCTL_WRITE_USN_CLOSE_RECORD 0x000900EF /* BB add struct */
+#define FSCTL_SIS_COPYFILE           0x00090100 /* BB add struct */
+#define FSCTL_RECALL_FILE            0x00090117 /* BB add struct */
+#define FSCTL_QUERY_SPARING_INFO     0x00090138 /* BB add struct */
+#define FSCTL_SET_ZERO_ON_DEALLOC    0x00090194 /* BB add struct */
+#define FSCTL_SET_SHORT_NAME_BEHAVIOR 0x000901B4 /* BB add struct */
+#define FSCTL_QUERY_ALLOCATED_RANGES 0x000940CF /* BB add struct */
+#define FSCTL_SET_DEFECT_MANAGEMENT  0x00098134 /* BB add struct */
+#define FSCTL_SIS_LINK_FILES         0x0009C104
+#define FSCTL_PIPE_PEEK              0x0011400C /* BB add struct */
+#define FSCTL_PIPE_TRANSCEIVE        0x0011C017 /* BB add struct */
+/* strange that the number for this op is not sequential with previous op */
+#define FSCTL_PIPE_WAIT              0x00110018 /* BB add struct */
+#define FSCTL_LMR_GET_LINK_TRACK_INF 0x001400E8 /* BB add struct */
+#define FSCTL_LMR_SET_LINK_TRACK_INF 0x001400EC /* BB add struct */
+
+#define IO_REPARSE_TAG_MOUNT_POINT   0xA0000003
+#define IO_REPARSE_TAG_HSM           0xC0000004
+#define IO_REPARSE_TAG_SIS           0x80000007