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 previous commit
  [CIFS] Fix define for new proxy cap to match documentation
  [CIFS] Fix UNC path prefix on QueryUnixPathInfo to have correct slash
  [CIFS] Reserve new proxy cap for WAFS
  [CIFS] Add various missing flags and defintions
  [CIFS] make cifs_dfs_automount_list_static
  [CIFS] Fix oops when slow oplock process races with unmount
  [CIFS] Fix acl length when very short ACL being modified by chmod
  [CIFS] Fix looping on reconnect to Samba when unexpected tree connect fail on reconnect
  [CIFS] minor update to change log

fs/cifs/CHANGES

@@ -8,7 +8,8 @@ of second share to disconnected server session (autoreconnect on this).
 Add ability to modify cifs acls for handling chmod (when mounted with
 cifsacl flag). Fix prefixpath path separator so we can handle mounts
 with prefixpaths longer than one directory (one path component) when
-mounted to Windows servers.
+mounted to Windows servers.  Fix slow file open when cifsacl
+enabled.
 
 Version 1.51
 ------------

fs/cifs/README

@@ -3,7 +3,14 @@ features such as hierarchical dfs like namespace, hardlinks, locking and more.
 It was designed to comply with the SNIA CIFS Technical Reference (which 
 supersedes the 1992 X/Open SMB Standard) as well as to perform best practice 
 practical interoperability with Windows 2000, Windows XP, Samba and equivalent 
-servers.  
+servers.  This code was developed in participation with the Protocol Freedom
+Information Foundation.
+
+Please see
+  http://protocolfreedom.org/ and
+  http://samba.org/samba/PFIF/
+for more details.
+
 
 For questions or bug reports please contact:
     sfrench@samba.org (sfrench@us.ibm.com) 

fs/cifs/cifs_dfs_ref.c

@@ -23,7 +23,7 @@
 #include "dns_resolve.h"
 #include "cifs_debug.h"
 
-LIST_HEAD(cifs_dfs_automount_list);
+static LIST_HEAD(cifs_dfs_automount_list);
 
 /*
  * DFS functions

fs/cifs/cifsacl.c

@@ -516,7 +516,7 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
 
 /* Convert permission bits from mode to equivalent CIFS ACL */
 static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
-				int acl_len, struct inode *inode, __u64 nmode)
+				struct inode *inode, __u64 nmode)
 {
 	int rc = 0;
 	__u32 dacloffset;
@@ -692,14 +692,14 @@ void acl_to_uid_mode(struct inode *inode, const char *path, const __u16 *pfid)
 int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
 {
 	int rc = 0;
-	__u32 acllen = 0;
+	__u32 secdesclen = 0;
 	struct cifs_ntsd *pntsd = NULL; /* acl obtained from server */
 	struct cifs_ntsd *pnntsd = NULL; /* modified acl to be sent to server */
 
 	cFYI(DBG2, ("set ACL from mode for %s", path));
 
 	/* Get the security descriptor */
-	pntsd = get_cifs_acl(&acllen, inode, path, NULL);
+	pntsd = get_cifs_acl(&secdesclen, inode, path, NULL);
 
 	/* Add three ACEs for owner, group, everyone getting rid of
 	   other ACEs as chmod disables ACEs and set the security descriptor */
@@ -709,20 +709,22 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
 		   set security descriptor request security descriptor
 		   parameters, and secuirty descriptor itself */
 
-		pnntsd = kmalloc(acllen, GFP_KERNEL);
+		secdesclen = secdesclen < DEFSECDESCLEN ?
+					DEFSECDESCLEN : secdesclen;
+		pnntsd = kmalloc(secdesclen, GFP_KERNEL);
 		if (!pnntsd) {
 			cERROR(1, ("Unable to allocate security descriptor"));
 			kfree(pntsd);
 			return (-ENOMEM);
 		}
 
-		rc = build_sec_desc(pntsd, pnntsd, acllen, inode, nmode);
+		rc = build_sec_desc(pntsd, pnntsd, inode, nmode);
 
 		cFYI(DBG2, ("build_sec_desc rc: %d", rc));
 
 		if (!rc) {
 			/* Set the security descriptor */
-			rc = set_cifs_acl(pnntsd, acllen, inode, path);
+			rc = set_cifs_acl(pnntsd, secdesclen, inode, path);
 			cFYI(DBG2, ("set_cifs_acl rc: %d", rc));
 		}
 

fs/cifs/cifsacl.h

@@ -27,6 +27,7 @@
 #define NUM_SUBAUTHS 5 /* number of sub authority fields */
 #define NUM_WK_SIDS 7 /* number of well known sids */
 #define SIDNAMELENGTH 20 /* long enough for the ones we care about */
+#define DEFSECDESCLEN 192 /* sec desc len contaiting a dacl with three aces */
 
 #define READ_BIT        0x4
 #define WRITE_BIT       0x2

fs/cifs/cifsfs.h

@@ -62,11 +62,9 @@ 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 struct list_head cifs_dfs_automount_list;
 extern 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 */

fs/cifs/cifspdu.h

@@ -1,7 +1,7 @@
 /*
  *   fs/cifs/cifspdu.h
  *
- *   Copyright (c) International Business Machines  Corp., 2002,2007
+ *   Copyright (c) International Business Machines  Corp., 2002,2008
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -163,7 +163,10 @@
 						   path names in response */
 #define SMBFLG2_KNOWS_EAS cpu_to_le16(2)
 #define SMBFLG2_SECURITY_SIGNATURE cpu_to_le16(4)
+#define SMBFLG2_COMPRESSED (8)
+#define SMBFLG2_SECURITY_SIGNATURE_REQUIRED (0x10)
 #define SMBFLG2_IS_LONG_NAME cpu_to_le16(0x40)
+#define SMBFLG2_REPARSE_PATH (0x400)
 #define SMBFLG2_EXT_SEC cpu_to_le16(0x800)
 #define SMBFLG2_DFS cpu_to_le16(0x1000)
 #define SMBFLG2_PAGING_IO cpu_to_le16(0x2000)
@@ -305,7 +308,7 @@
 #define FILE_SHARE_DELETE 0x00000004
 #define FILE_SHARE_ALL    0x00000007
 
-/* CreateDisposition flags */
+/* CreateDisposition flags, similar to CreateAction as well */
 #define FILE_SUPERSEDE    0x00000000
 #define FILE_OPEN         0x00000001
 #define FILE_CREATE       0x00000002
@@ -317,15 +320,25 @@
 #define CREATE_NOT_FILE		0x00000001	/* if set must not be file */
 #define CREATE_WRITE_THROUGH	0x00000002
 #define CREATE_SEQUENTIAL       0x00000004
-#define CREATE_SYNC_ALERT       0x00000010
-#define CREATE_ASYNC_ALERT      0x00000020
+#define CREATE_NO_BUFFER        0x00000008      /* should not buffer on srv */
+#define CREATE_SYNC_ALERT       0x00000010	/* MBZ */
+#define CREATE_ASYNC_ALERT      0x00000020	/* MBZ */
 #define CREATE_NOT_DIR		0x00000040    /* if set must not be directory */
+#define CREATE_TREE_CONNECTION  0x00000080	/* should be zero */
+#define CREATE_COMPLETE_IF_OPLK 0x00000100	/* should be zero */
 #define CREATE_NO_EA_KNOWLEDGE  0x00000200
-#define CREATE_EIGHT_DOT_THREE  0x00000400
+#define CREATE_EIGHT_DOT_THREE  0x00000400	/* doc says this is obsolete
+						 open for recovery flag - should
+						 be zero */
 #define CREATE_RANDOM_ACCESS	0x00000800
 #define CREATE_DELETE_ON_CLOSE	0x00001000
 #define CREATE_OPEN_BY_ID       0x00002000
+#define CREATE_OPEN_BACKUP_INTN 0x00004000
+#define CREATE_NO_COMPRESSION   0x00008000
+#define CREATE_RESERVE_OPFILTER 0x00100000	/* should be zero */
 #define OPEN_REPARSE_POINT	0x00200000
+#define OPEN_NO_RECALL          0x00400000
+#define OPEN_FREE_SPACE_QUERY   0x00800000	/* should be zero */
 #define CREATE_OPTIONS_MASK     0x007FFFFF
 #define CREATE_OPTION_SPECIAL   0x20000000   /* system. NB not sent over wire */
 
@@ -470,7 +483,7 @@ typedef struct lanman_neg_rsp {
 
 typedef struct negotiate_rsp {
 	struct smb_hdr hdr;	/* wct = 17 */
-	__le16 DialectIndex;
+	__le16 DialectIndex; /* 0xFFFF = no dialect acceptable */
 	__u8 SecurityMode;
 	__le16 MaxMpxCount;
 	__le16 MaxNumberVcs;
@@ -516,10 +529,11 @@ typedef struct negotiate_rsp {
 #define CAP_INFOLEVEL_PASSTHRU 0x00002000
 #define CAP_LARGE_READ_X       0x00004000
 #define CAP_LARGE_WRITE_X      0x00008000
+#define CAP_LWIO               0x00010000 /* support fctl_srv_req_resume_key */
 #define CAP_UNIX               0x00800000
-#define CAP_RESERVED           0x02000000
-#define CAP_BULK_TRANSFER      0x20000000
-#define CAP_COMPRESSED_DATA    0x40000000
+#define CAP_COMPRESSED_DATA    0x02000000
+#define CAP_DYNAMIC_REAUTH     0x20000000
+#define CAP_PERSISTENT_HANDLES 0x40000000
 #define CAP_EXTENDED_SECURITY  0x80000000
 
 typedef union smb_com_session_setup_andx {
@@ -668,9 +682,7 @@ typedef struct smb_com_tconx_req {
 } __attribute__((packed)) TCONX_REQ;
 
 typedef struct smb_com_tconx_rsp {
-	struct smb_hdr hdr;	/* wct = 3 note that Win2000 has sent wct = 7
-				 in some cases on responses. Four unspecified
-				 words followed OptionalSupport */
+	struct smb_hdr hdr;	/* wct = 3 , not extended response */
 	__u8 AndXCommand;
 	__u8 AndXReserved;
 	__le16 AndXOffset;
@@ -680,13 +692,48 @@ typedef struct smb_com_tconx_rsp {
 	/* STRING NativeFileSystem */
 } __attribute__((packed)) TCONX_RSP;
 
+typedef struct smb_com_tconx_rsp_ext {
+	struct smb_hdr hdr;	/* wct = 7, extended response */
+	__u8 AndXCommand;
+	__u8 AndXReserved;
+	__le16 AndXOffset;
+	__le16 OptionalSupport;	/* see below */
+	__le32 MaximalShareAccessRights;
+	__le32 GuestMaximalShareAccessRights;
+	__u16 ByteCount;
+	unsigned char Service[1];	/* always ASCII, not Unicode */
+	/* STRING NativeFileSystem */
+} __attribute__((packed)) TCONX_RSP_EXT;
+
+
 /* tree connect Flags */
 #define DISCONNECT_TID          0x0001
+#define TCON_EXTENDED_SIGNATURES 0x0004
 #define TCON_EXTENDED_SECINFO   0x0008
+
 /* OptionalSupport bits */
 #define SMB_SUPPORT_SEARCH_BITS 0x0001	/* "must have" directory search bits
 					 (exclusive searches supported) */
 #define SMB_SHARE_IS_IN_DFS     0x0002
+#define SMB_CSC_MASK               0x000C
+/* CSC flags defined as follows */
+#define SMB_CSC_CACHE_MANUAL_REINT 0x0000
+#define SMB_CSC_CACHE_AUTO_REINT   0x0004
+#define SMB_CSC_CACHE_VDO          0x0008
+#define SMB_CSC_NO_CACHING         0x000C
+
+#define SMB_UNIQUE_FILE_NAME    0x0010
+#define SMB_EXTENDED_SIGNATURES 0x0020
+
+/* services
+ *
+ * A:       ie disk
+ * LPT1:    ie printer
+ * IPC      ie named pipe
+ * COMM
+ * ?????    ie any type
+ *
+ */
 
 typedef struct smb_com_logoff_andx_req {
 	struct smb_hdr hdr;	/* wct = 2 */
@@ -750,6 +797,17 @@ typedef struct smb_com_findclose_req {
 #define COMM_DEV_TYPE		0x0004
 #define UNKNOWN_TYPE		0xFFFF
 
+/* Device Type or File Status Flags */
+#define NO_EAS			0x0001
+#define NO_SUBSTREAMS		0x0002
+#define NO_REPARSETAG		0x0004
+/* following flags can apply if pipe */
+#define ICOUNT_MASK		0x00FF
+#define PIPE_READ_MODE		0x0100
+#define NAMED_PIPE_TYPE		0x0400
+#define PIPE_END_POINT		0x0800
+#define BLOCKING_NAMED_PIPE	0x8000
+
 typedef struct smb_com_open_req {	/* also handles create */
 	struct smb_hdr hdr;	/* wct = 24 */
 	__u8 AndXCommand;
@@ -758,7 +816,7 @@ typedef struct smb_com_open_req {	/* also handles create */
 	__u8 Reserved;		/* Must Be Zero */
 	__le16 NameLength;
 	__le32 OpenFlags;
-	__le32 RootDirectoryFid;
+	__u32  RootDirectoryFid;
 	__le32 DesiredAccess;
 	__le64 AllocationSize;
 	__le32 FileAttributes;
@@ -801,6 +859,32 @@ typedef struct smb_com_open_rsp {
 	__u16 ByteCount;	/* bct = 0 */
 } __attribute__((packed)) OPEN_RSP;
 
+typedef struct smb_com_open_rsp_ext {
+	struct smb_hdr hdr;     /* wct = 42 but meaningless due to MS bug? */
+	__u8 AndXCommand;
+	__u8 AndXReserved;
+	__le16 AndXOffset;
+	__u8 OplockLevel;
+	__u16 Fid;
+	__le32 CreateAction;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le32 FileAttributes;
+	__le64 AllocationSize;
+	__le64 EndOfFile;
+	__le16 FileType;
+	__le16 DeviceState;
+	__u8 DirectoryFlag;
+	__u8 VolumeGUID[16];
+	__u64 FileId; /* note no endian conversion - is opaque UniqueID */
+	__le32 MaximalAccessRights;
+	__le32 GuestMaximalAccessRights;
+	__u16 ByteCount;        /* bct = 0 */
+} __attribute__((packed)) OPEN_RSP_EXT;
+
+
 /* format of legacy open request */
 typedef struct smb_com_openx_req {
 	struct smb_hdr	hdr;	/* wct = 15 */
@@ -1703,6 +1787,12 @@ typedef struct smb_com_transaction2_fnext_rsp_parms {
 #define SMB_QUERY_CIFS_UNIX_INFO    0x200
 #define SMB_QUERY_POSIX_FS_INFO     0x201
 #define SMB_QUERY_POSIX_WHO_AM_I    0x202
+#define SMB_REQUEST_TRANSPORT_ENCRYPTION 0x203
+#define SMB_QUERY_FS_PROXY          0x204 /* WAFS enabled. Returns structure
+					    FILE_SYSTEM__UNIX_INFO to tell
+					    whether new NTIOCTL available
+					    (0xACE) for WAN friendly SMB
+					    operations to be carried */
 #define SMB_QUERY_LABEL_INFO        0x3ea
 #define SMB_QUERY_FS_QUOTA_INFO     0x3ee
 #define SMB_QUERY_FS_FULL_SIZE_INFO 0x3ef
@@ -1959,7 +2049,10 @@ typedef struct {
 #define CIFS_UNIX_LARGE_READ_CAP        0x00000040 /* support reads >128K (up
 						      to 0xFFFF00 */
 #define CIFS_UNIX_LARGE_WRITE_CAP       0x00000080
-
+#define CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP 0x00000100 /* can do SPNEGO crypt */
+#define CIFS_UNIX_TRANPSORT_ENCRYPTION_MANDATORY_CAP  0x00000200 /* must do  */
+#define CIFS_UNIX_PROXY_CAP             0x00000400 /* Proxy cap: 0xACE ioctl and
+						      QFS PROXY call */
 #ifdef CONFIG_CIFS_POSIX
 /* Can not set pathnames cap yet until we send new posix create SMB since
    otherwise server can treat such handles opened with older ntcreatex

fs/cifs/cifsproto.h

@@ -84,6 +84,7 @@ extern __u16 GetNextMid(struct TCP_Server_Info *server);
 extern struct oplock_q_entry *AllocOplockQEntry(struct inode *, u16,
 						 struct cifsTconInfo *);
 extern void DeleteOplockQEntry(struct oplock_q_entry *);
+extern void DeleteTconOplockQEntries(struct cifsTconInfo *);
 extern struct timespec cifs_NTtimeToUnix(u64 utc_nanoseconds_since_1601);
 extern u64 cifs_UnixTimeToNT(struct timespec);
 extern __le64 cnvrtDosCifsTm(__u16 date, __u16 time);

fs/cifs/cifssmb.c

@@ -165,17 +165,19 @@ small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
 				rc = CIFSTCon(0, tcon->ses, tcon->treeName,
 					      tcon, nls_codepage);
 				up(&tcon->ses->sesSem);
-				/* tell server which Unix caps we support */
-				if (tcon->ses->capabilities & CAP_UNIX)
-					reset_cifs_unix_caps(0 /* no xid */,
-						tcon,
-						NULL /* we do not know sb */,
-						NULL /* no vol info */);
 				/* BB FIXME add code to check if wsize needs
 				   update due to negotiated smb buffer size
 				   shrinking */
-				if (rc == 0)
+				if (rc == 0) {
 					atomic_inc(&tconInfoReconnectCount);
+					/* tell server Unix caps we support */
+					if (tcon->ses->capabilities & CAP_UNIX)
+						reset_cifs_unix_caps(
+						0 /* no xid */,
+						tcon,
+						NULL /* we do not know sb */,
+						NULL /* no vol info */);
+				}
 
 				cFYI(1, ("reconnect tcon rc = %d", rc));
 				/* Removed call to reopen open files here.
@@ -310,17 +312,19 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon,
 				rc = CIFSTCon(0, tcon->ses, tcon->treeName,
 					      tcon, nls_codepage);
 				up(&tcon->ses->sesSem);
-				/* tell server which Unix caps we support */
-				if (tcon->ses->capabilities & CAP_UNIX)
-					reset_cifs_unix_caps(0 /* no xid */,
-						tcon,
-						NULL /* do not know sb */,
-						NULL /* no vol info */);
 				/* BB FIXME add code to check if wsize needs
 				update due to negotiated smb buffer size
 				shrinking */
-				if (rc == 0)
+				if (rc == 0) {
 					atomic_inc(&tconInfoReconnectCount);
+					/* tell server Unix caps we support */
+					if (tcon->ses->capabilities & CAP_UNIX)
+						reset_cifs_unix_caps(
+						0 /* no xid */,
+						tcon,
+						NULL /* do not know sb */,
+						NULL /* no vol info */);
+				}
 
 				cFYI(1, ("reconnect tcon rc = %d", rc));
 				/* Removed call to reopen open files here.