Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Fix typo in cifs readme from previous commit
  [CIFS] Make sec=none force an anonymous mount
  [CIFS] Change semaphore to mutex for cifs lock_sem
  [CIFS] Fix oops in reset_cifs_unix_caps on reconnect
  [CIFS] UID/GID override on CIFS mounts to Samba
  [CIFS] prefixpath mounts to servers supporting posix paths used wrong slash
  [CIFS] Update cifs version to 1.49
  [CIFS] Replace kmalloc/memset combination with kzalloc
  [CIFS]  Add IPv6 support
  [CIFS] New CIFS POSIX mkdir performance improvement (part 2)
  [CIFS] New CIFS POSIX mkdir performance improvement
  [CIFS] Add write perm for usr to file on windows should remove r/o dos attr
  [CIFS] Remove unnecessary parm to cifs_reopen_file
  [CIFS] Switch cifsd to kthread_run from kernel_thread
  [CIFS] Remove unnecessary checks

fs/cifs/CHANGES

@@ -1,4 +1,16 @@
-Verison 1.48
+Version 1.49
+------------
+IPv6 support.  Enable ipv6 addresses to be passed on mount (put the ipv6
+address after the "ip=" mount option, at least until mount.cifs is fixed to
+handle DNS host to ipv6 name translation).  Accept override of uid or gid
+on mount even when Unix Extensions are negotiated (it used to be ignored
+when Unix Extensions were ignored).  This allows users to override the
+default uid and gid for files when they are certain that the uids or
+gids on the server do not match those of the client.  Make "sec=none"
+mount override username (so that null user connection is attempted)
+to match what documentation said.
+
+Version 1.48
 ------------
 Fix mtime bouncing around from local idea of last write times to remote time.
 Fix hang (in i_size_read) when simultaneous size update of same remote file
@@ -9,7 +21,13 @@ from read-only back to read-write, reflect this change in default file mode
 (we had been leaving a file's mode read-only until the inode were reloaded).
 Allow setting of attribute back to ATTR_NORMAL (removing readonly dos attribute
 when archive dos attribute not set and we are changing mode back to writeable
-on server which does not support the Unix Extensions).
+on server which does not support the Unix Extensions).  Remove read only dos
+attribute on chmod when adding any write permission (ie on any of
+user/group/other (not all of user/group/other ie  0222) when
+mounted to windows.  Add support for POSIX MkDir (slight performance
+enhancement and eliminates the network race between the mkdir and set 
+path info of the mode).
+
 
 Version 1.47
 ------------

fs/cifs/README

@@ -257,13 +257,19 @@ A partial list of the supported mount options follows:
 		mount.	
   domain	Set the SMB/CIFS workgroup name prepended to the
 		username during CIFS session establishment
-  uid		If CIFS Unix extensions are not supported by the server
-		this overrides the default uid for inodes. For mounts to
-		servers which do support the CIFS Unix extensions, such
-		as a properly configured Samba server, the server provides
-		the uid, gid and mode.  For servers which do not support
-		the Unix extensions, the default uid (and gid) returned on
-		lookup of existing files is the uid (gid) of the person
+  uid		Set the default uid for inodes. For mounts to servers
+		which do support the CIFS Unix extensions, such as a
+		properly configured Samba server, the server provides
+		the uid, gid and mode so this parameter should  not be
+		specified unless the server and clients uid and gid
+		numbering differ.  If the server and client are in the
+		same domain (e.g. running winbind or nss_ldap) and
+		the server supports the Unix Extensions then the uid
+		and gid can be retrieved from the server (and uid
+		and gid would not have to be specifed on the mount. 
+		For servers which do not support the CIFS Unix
+		extensions, the default uid (and gid) returned on lookup
+		of existing files will be the uid (gid) of the person
 		who executed the mount (root, except when mount.cifs
 		is configured setuid for user mounts) unless the "uid=" 
 		(gid) mount option is specified.  For the uid (gid) of newly
@@ -281,8 +287,7 @@ A partial list of the supported mount options follows:
 		the client.  Note that the mount.cifs helper must be
 		at version 1.10 or higher to support specifying the uid
 		(or gid) in non-numberic form.
-  gid		If CIFS Unix extensions are not supported by the server
-		this overrides the default gid for inodes.
+  gid		Set the default gid for inodes (similar to above).
   file_mode     If CIFS Unix extensions are not supported by the server
 		this overrides the default mode for file inodes.
   dir_mode      If CIFS Unix extensions are not supported by the server 
@@ -467,7 +472,7 @@ including:
 	-V      print mount.cifs version
 	-?      display simple usage information
 
-With recent 2.6 kernel versions of modutils, the version of the cifs kernel
+With most 2.6 kernel versions of modutils, the version of the cifs kernel
 module can be displayed via modinfo.
 
 Misc /proc/fs/cifs Flags and Debug Info
@@ -516,8 +521,22 @@ SecurityFlags		Flags which control security negotiation and
 			must use plaintext passwords			0x20020
 			(reserved for future packet encryption)		0x00040
 
-cifsFYI			If set to one, additional debug information is
-			logged to the system error log. (default 0)
+cifsFYI			If set to non-zero value, additional debug information
+			will be logged to the system error log.  This field
+			contains three flags controlling different classes of
+			debugging entries.  The maximum value it can be set
+			to is 7 which enables all debugging points (default 0).
+			Some debugging statements are not compiled into the
+			cifs kernel unless CONFIG_CIFS_DEBUG2 is enabled in the
+			kernel configuration. cifsFYI may be set to one or
+			nore of the following flags (7 sets them all):
+
+			log cifs informational messages			0x01
+			log return codes from cifs entry points		0x02
+			log slow responses (ie which take longer than 1 second)
+			  CONFIG_CIFS_STATS2 must be enabled in .config	0x04
+
+
 traceSMB		If set to one, debug information is logged to the
 			system error log with the start of smb requests
 			and responses (default 0)

fs/cifs/TODO

@@ -1,4 +1,4 @@
-Version 1.39 November 30, 2005
+Version 1.49 April 26, 2007
 
 A Partial List of Missing Features
 ==================================
@@ -18,7 +18,7 @@ better)
 
 d) Kerberos/SPNEGO session setup support - (started)
 
-e) NTLMv2 authentication (mostly implemented - double check
+e) More testing of NTLMv2 authentication (mostly implemented - double check
 that NTLMv2 signing works, also need to cleanup now unneeded SessSetup code in
 fs/cifs/connect.c)
 
@@ -27,75 +27,71 @@ used (Kerberos or NTLMSSP). Signing alreadyimplemented for NTLM
 and raw NTLMSSP already. This is important when enabling
 extended security and mounting to Windows 2003 Servers
 
-f) Directory entry caching relies on a 1 second timer, rather than 
+g) Directory entry caching relies on a 1 second timer, rather than 
 using FindNotify or equivalent.  - (started)
 
-g) A few byte range testcases fail due to POSIX vs. Windows/CIFS
-style byte range lock differences.  Save byte range locks so
-reconnect can replay them.  
-
-h) Support unlock all (unlock 0,MAX_OFFSET)
-by unlocking all known byte range locks that we locked on the file.
-
-i) quota support (needs minor kernel change since quota calls
+h) quota support (needs minor kernel change since quota calls
 to make it to network filesystems or deviceless filesystems)
 
-j) investigate sync behavior (including syncpage) and check  
+i) investigate sync behavior (including syncpage) and check  
 for proper behavior of intr/nointr
 
-k) hook lower into the sockets api (as NFS/SunRPC does) to avoid the
+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.
 
-l) finish support for IPv6.  This is mostly complete but
-needs a simple conversion of ipv6 to sin6_addr from the
-address in string representation.
-
-m) Better optimize open (and pathbased setfilesize) to reduce the
+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).
 
-o) Improve performance of readpages by sending more than one read
+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.
 
-p) Add support for storing symlink info to Windows servers 
+m) Add support for storing symlink info to Windows servers 
 in the Extended Attribute format their SFU clients would recognize.
 
-q) Finish fcntl D_NOTIFY support so kde and gnome file list windows
+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.   
 
-r) Add GUI tool to configure /proc/fs/cifs settings and for display of
+o) Add GUI tool to configure /proc/fs/cifs settings and for display of
 the CIFS statistics (started)
 
-s) implement support for security and trusted categories of xattrs
+p) implement support for security and trusted categories of xattrs
 (requires minor protocol extension) to enable better support for SELINUX
 
-t) Implement O_DIRECT flag on open (already supported on mount)
+q) Implement O_DIRECT flag on open (already supported on mount)
 
-u) Create UID mapping facility so server UIDs can be mapped on a per
+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.
 
-v) Add support for CIFS Unix and also the newer POSIX extensions to the
+s) Add support for CIFS Unix and also the newer POSIX extensions to the
 server side for Samba 4.
 
-w) Finish up the dos time conversion routines needed to return old server
-time to the client (default time, of now or time 0 is used now for these 
-very old servers)
-
-x) In support for OS/2 (LANMAN 1.2 and LANMAN2.1 based SMB servers) 
+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)
 
-y) Finish testing of Windows 9x/Windows ME server support (started).
+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 mount option for Linux extension disable per mount, and partial
+disable per mount (uid off, symlink/fifo/mknod on but what about posix acls?)
 
-KNOWN BUGS (updated February 26, 2007)
+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.
@@ -127,10 +123,3 @@ 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.
 
-DOS attrs - returned as pseudo-xattr in Samba format (check VFAT and NTFS for this too)
-
-mount check for unmatched uids - and uid override
-
-Add mount option for Linux extension disable per mount, and partial disable per mount (uid off, symlink/fifo/mknod on but what about posix acls?) 
-
-Free threads at umount --force that are stuck on the sesSem

fs/cifs/cifs_fs_sb.h

@@ -22,12 +22,14 @@
 #define CIFS_MOUNT_SET_UID      2 /* set current->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_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    */
 
 struct cifs_sb_info {
 	struct cifsTconInfo *tcon;	/* primary mount */

fs/cifs/cifs_unicode.c

@@ -74,8 +74,8 @@ cifs_strtoUCS(__le16 * to, const char *from, int len,
 		charlen = codepage->char2uni(from, len, &wchar_to[i]);
 		if (charlen < 1) {
 			cERROR(1,
-			       ("cifs_strtoUCS: char2uni returned %d",
-				charlen));
+			       ("strtoUCS: char2uni of %d returned %d",
+				(int)*from, charlen));
 			/* A question mark */
 			to[i] = cpu_to_le16(0x003f);
 			charlen = 1;