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] don't allow demultiplex thread to exit until kthread_stop is called
  [CIFS] when not using unix extensions, check for and set ATTR_READONLY on create and mkdir
  [CIFS]  add local struct inode pointer to cifs_setattr
  [CIFS] cifs_find_tcp_session cleanup

fs/cifs/cifspdu.h

@@ -340,6 +340,7 @@
 #define OPEN_NO_RECALL          0x00400000
 #define OPEN_FREE_SPACE_QUERY   0x00800000	/* should be zero */
 #define CREATE_OPTIONS_MASK     0x007FFFFF
+#define CREATE_OPTION_READONLY	0x10000000
 #define CREATE_OPTION_SPECIAL   0x20000000   /* system. NB not sent over wire */
 
 /* ImpersonationLevel flags */

fs/cifs/cifssmb.c

@@ -1224,11 +1224,8 @@ SMBLegacyOpen(const int xid, struct cifsTconInfo *tcon,
 	else /* BB FIXME BB */
 		pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/);
 
-	/* if ((omode & S_IWUGO) == 0)
-		pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
-	/*  Above line causes problems due to vfs splitting create into two
-	    pieces - need to set mode after file created not while it is
-	    being created */
+	if (create_options & CREATE_OPTION_READONLY)
+		pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY);
 
 	/* BB FIXME BB */
 /*	pSMB->CreateOptions = cpu_to_le32(create_options &
@@ -1331,17 +1328,16 @@ CIFSSMBOpen(const int xid, struct cifsTconInfo *tcon,
 		pSMB->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
 	else
 		pSMB->FileAttributes = cpu_to_le32(ATTR_NORMAL);
+
 	/* XP does not handle ATTR_POSIX_SEMANTICS */
 	/* but it helps speed up case sensitive checks for other
 	servers such as Samba */
 	if (tcon->ses->capabilities & CAP_UNIX)
 		pSMB->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
 
-	/* if ((omode & S_IWUGO) == 0)
-		pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);*/
-	/*  Above line causes problems due to vfs splitting create into two
-		pieces - need to set mode after file created not while it is
-		being created */
+	if (create_options & CREATE_OPTION_READONLY)
+		pSMB->FileAttributes |= cpu_to_le32(ATTR_READONLY);
+
 	pSMB->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
 	pSMB->CreateDisposition = cpu_to_le32(openDisposition);
 	pSMB->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);

fs/cifs/connect.c

@@ -348,7 +348,6 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
 	int reconnect;
 
 	current->flags |= PF_MEMALLOC;
-	server->tsk = current;	/* save process info to wake at shutdown */
 	cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current)));
 	write_lock(&GlobalSMBSeslock);
 	atomic_inc(&tcpSesAllocCount);
@@ -651,10 +650,20 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
 
 	spin_lock(&GlobalMid_Lock);
 	server->tcpStatus = CifsExiting;
-	server->tsk = NULL;
+	spin_unlock(&GlobalMid_Lock);
+
+	/* don't exit until kthread_stop is called */
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	while (!kthread_should_stop()) {
+		schedule();
+		set_current_state(TASK_UNINTERRUPTIBLE);
+	}
+	set_current_state(TASK_RUNNING);
+
 	/* check if we have blocked requests that need to free */
 	/* Note that cifs_max_pending is normally 50, but
 	can be set at module install time to as little as two */
+	spin_lock(&GlobalMid_Lock);
 	if (atomic_read(&server->inFlight) >= cifs_max_pending)
 		atomic_set(&server->inFlight, cifs_max_pending - 1);
 	/* We do not want to set the max_pending too low or we
@@ -1318,42 +1327,43 @@ cifs_parse_mount_options(char *options, const char *devname,
 
 static struct cifsSesInfo *
 cifs_find_tcp_session(struct in_addr *target_ip_addr,
-		struct in6_addr *target_ip6_addr,
-		 char *userName, struct TCP_Server_Info **psrvTcp)
+		      struct in6_addr *target_ip6_addr,
+		      char *userName, struct TCP_Server_Info **psrvTcp)
 {
 	struct list_head *tmp;
 	struct cifsSesInfo *ses;
+
 	*psrvTcp = NULL;
-	read_lock(&GlobalSMBSeslock);
 
+	read_lock(&GlobalSMBSeslock);
 	list_for_each(tmp, &GlobalSMBSessionList) {
 		ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
-		if (ses->server) {
-			if ((target_ip_addr &&
-				(ses->server->addr.sockAddr.sin_addr.s_addr
-				  == target_ip_addr->s_addr)) || (target_ip6_addr
-				&& memcmp(&ses->server->addr.sockAddr6.sin6_addr,
-					target_ip6_addr, sizeof(*target_ip6_addr)))) {
-				/* BB lock server and tcp session and increment
-				      use count here?? */
-
-				/* found a match on the TCP session */
-				*psrvTcp = ses->server;
-
-				/* BB check if reconnection needed */
-				if (strncmp
-				    (ses->userName, userName,
-				     MAX_USERNAME_SIZE) == 0){
-					read_unlock(&GlobalSMBSeslock);
-					/* Found exact match on both TCP and
-					   SMB sessions */
-					return ses;
-				}
-			}
+		if (!ses->server)
+			continue;
+
+		if (target_ip_addr &&
+		    ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr)
+				continue;
+		else if (target_ip6_addr &&
+			 memcmp(&ses->server->addr.sockAddr6.sin6_addr,
+				target_ip6_addr, sizeof(*target_ip6_addr)))
+				continue;
+		/* BB lock server and tcp session; increment use count here?? */
+
+		/* found a match on the TCP session */
+		*psrvTcp = ses->server;
+
+		/* BB check if reconnection needed */
+		if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) {
+			read_unlock(&GlobalSMBSeslock);
+			/* Found exact match on both TCP and
+			   SMB sessions */
+			return ses;
 		}
 		/* else tcp and smb sessions need reconnection */
 	}
 	read_unlock(&GlobalSMBSeslock);
+
 	return NULL;
 }
 
@@ -2186,15 +2196,12 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 			srvTcp->tcpStatus = CifsExiting;
 			spin_unlock(&GlobalMid_Lock);
 			if (srvTcp->tsk) {
-				struct task_struct *tsk;
 				/* If we could verify that kthread_stop would
 				   always wake up processes blocked in
 				   tcp in recv_mesg then we could remove the
 				   send_sig call */
 				force_sig(SIGKILL, srvTcp->tsk);
-				tsk = srvTcp->tsk;
-				if (tsk)
-					kthread_stop(tsk);
+				kthread_stop(srvTcp->tsk);
 			}
 		}
 		 /* If find_unc succeeded then rc == 0 so we can not end */
@@ -2210,23 +2217,17 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
 					if ((temp_rc == -ESHUTDOWN) &&
 					    (pSesInfo->server) &&
 					    (pSesInfo->server->tsk)) {
-						struct task_struct *tsk;
 						force_sig(SIGKILL,
 							pSesInfo->server->tsk);
-						tsk = pSesInfo->server->tsk;
-						if (tsk)
-							kthread_stop(tsk);
+						kthread_stop(pSesInfo->server->tsk);
 					}
 				} else {
 					cFYI(1, ("No session or bad tcon"));
 					if ((pSesInfo->server) &&
 					    (pSesInfo->server->tsk)) {
-						struct task_struct *tsk;
 						force_sig(SIGKILL,
 							pSesInfo->server->tsk);
-						tsk = pSesInfo->server->tsk;
-						if (tsk)
-							kthread_stop(tsk);
+						kthread_stop(pSesInfo->server->tsk);
 					}
 				}
 				sesInfoFree(pSesInfo);

fs/cifs/dir.c

@@ -119,6 +119,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 {
 	int rc = -ENOENT;
 	int xid;
+	int create_options = CREATE_NOT_DIR;
 	int oplock = 0;
 	int desiredAccess = GENERIC_READ | GENERIC_WRITE;
 	__u16 fileHandle;
@@ -176,9 +177,19 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 		FreeXid(xid);
 		return -ENOMEM;
 	}
+
+	mode &= ~current->fs->umask;
+
+	/*
+	 * if we're not using unix extensions, see if we need to set
+	 * ATTR_READONLY on the create call
+	 */
+	if (!pTcon->unix_ext && (mode & S_IWUGO) == 0)
+		create_options |= CREATE_OPTION_READONLY;
+
 	if (cifs_sb->tcon->ses->capabilities & CAP_NT_SMBS)
 		rc = CIFSSMBOpen(xid, pTcon, full_path, disposition,
-			 desiredAccess, CREATE_NOT_DIR,
+			 desiredAccess, create_options,
 			 &fileHandle, &oplock, buf, cifs_sb->local_nls,
 			 cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
 	else
@@ -187,7 +198,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 	if (rc == -EIO) {
 		/* old server, retry the open legacy style */
 		rc = SMBLegacyOpen(xid, pTcon, full_path, disposition,
-			desiredAccess, CREATE_NOT_DIR,
+			desiredAccess, create_options,
 			&fileHandle, &oplock, buf, cifs_sb->local_nls,
 			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
 	}
@@ -197,7 +208,6 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
 		/* If Open reported that we actually created a file
 		then we now have to set the mode if possible */
 		if ((pTcon->unix_ext) && (oplock & CIFS_CREATE_ACTION)) {
-			mode &= ~current->fs->umask;
 			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
 				CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode,
 					(__u64)current->fsuid,

fs/cifs/inode.c

@@ -974,8 +974,8 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
 		  * failed to get it from the server or was set bogus */
 		if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
 				direntry->d_inode->i_nlink = 2;
+		mode &= ~current->fs->umask;
 		if (pTcon->unix_ext) {
-			mode &= ~current->fs->umask;
 			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
 				CIFSSMBUnixSetPerms(xid, pTcon, full_path,
 						    mode,
@@ -994,9 +994,16 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
 						    CIFS_MOUNT_MAP_SPECIAL_CHR);
 			}
 		} else {
-			/* BB to be implemented via Windows secrty descriptors
-			   eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
-						 -1, -1, local_nls); */
+			if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) &&
+			    (mode & S_IWUGO) == 0) {
+				FILE_BASIC_INFO pInfo;
+				memset(&pInfo, 0, sizeof(pInfo));
+				pInfo.Attributes = cpu_to_le32(ATTR_READONLY);
+				CIFSSMBSetTimes(xid, pTcon, full_path,
+						&pInfo, cifs_sb->local_nls,
+						cifs_sb->mnt_cifs_flags &
+						CIFS_MOUNT_MAP_SPECIAL_CHR);
+			}
 			if (direntry->d_inode) {
 				direntry->d_inode->i_mode = mode;
 				direntry->d_inode->i_mode |= S_IFDIR;
@@ -1408,18 +1415,19 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 	__u64 uid = 0xFFFFFFFFFFFFFFFFULL;
 	__u64 gid = 0xFFFFFFFFFFFFFFFFULL;
 	struct cifsInodeInfo *cifsInode;
+	struct inode *inode = direntry->d_inode;
 
 	xid = GetXid();
 
 	cFYI(1, ("setattr on file %s attrs->iavalid 0x%x",
 		 direntry->d_name.name, attrs->ia_valid));
 
-	cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
+	cifs_sb = CIFS_SB(inode->i_sb);
 	pTcon = cifs_sb->tcon;
 
 	if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
 		/* check if we have permission to change attrs */
-		rc = inode_change_ok(direntry->d_inode, attrs);
+		rc = inode_change_ok(inode, attrs);
 		if (rc < 0) {
 			FreeXid(xid);
 			return rc;
@@ -1432,7 +1440,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 		FreeXid(xid);
 		return -ENOMEM;
 	}
-	cifsInode = CIFS_I(direntry->d_inode);
+	cifsInode = CIFS_I(inode);
 
 	if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
 		/*
@@ -1443,9 +1451,9 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 		   will be truncated anyway? Also, should we error out here if
 		   the flush returns error?
 		 */
-		rc = filemap_write_and_wait(direntry->d_inode->i_mapping);
+		rc = filemap_write_and_wait(inode->i_mapping);
 		if (rc != 0) {
-			CIFS_I(direntry->d_inode)->write_behind_rc = rc;
+			cifsInode->write_behind_rc = rc;
 			rc = 0;
 		}
 	}
@@ -1521,9 +1529,8 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 		   */
 
 		if (rc == 0) {
-			rc = cifs_vmtruncate(direntry->d_inode, attrs->ia_size);
-			cifs_truncate_page(direntry->d_inode->i_mapping,
-					   direntry->d_inode->i_size);
+			rc = cifs_vmtruncate(inode, attrs->ia_size);
+			cifs_truncate_page(inode->i_mapping, inode->i_size);
 		} else
 			goto cifs_setattr_exit;
 	}
@@ -1557,7 +1564,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 		rc = 0;
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
-			rc = mode_to_acl(direntry->d_inode, full_path, mode);
+			rc = mode_to_acl(inode, full_path, mode);
 		else if ((mode & S_IWUGO) == 0) {
 #else
 		if ((mode & S_IWUGO) == 0) {
@@ -1665,7 +1672,7 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 	/* do not need local check to inode_check_ok since the server does
 	   that */
 	if (!rc)
-		rc = inode_setattr(direntry->d_inode, attrs);
+		rc = inode_setattr(inode, attrs);
 cifs_setattr_exit:
 	kfree(full_path);
 	FreeXid(xid);