[PATCH] cifs: cleanup of ifdefs usage so it is more consistent

And fix to not needlessly send new POSIX QFSInfo when server does not
explicitly claim support for the new protocol extensions. 

Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/cifs/cifsfs.c

@@ -169,7 +169,8 @@ cifs_put_super(struct super_block *sb)
 static int
 cifs_statfs(struct super_block *sb, struct kstatfs *buf)
 {
-	int xid, rc = -EOPNOTSUPP;
+	int xid; 
+	int rc = -EOPNOTSUPP;
 	struct cifs_sb_info *cifs_sb;
 	struct cifsTconInfo *pTcon;
 
@@ -181,17 +182,18 @@ cifs_statfs(struct super_block *sb, struct kstatfs *buf)
 	buf->f_type = CIFS_MAGIC_NUMBER;
 
 	/* instead could get the real value via SMB_QUERY_FS_ATTRIBUTE_INFO */
-	buf->f_namelen = PATH_MAX;	/* PATH_MAX may be too long - it would presumably
-					   be length of total path, note that some servers may be 
-					   able to support more than this, but best to be safe
-					   since Win2k and others can not handle very long filenames */
+	buf->f_namelen = PATH_MAX; /* PATH_MAX may be too long - it would 
+				      presumably be total path, but note
+				      that some servers (includinng Samba 3)
+				      have a shorter maximum path */
 	buf->f_files = 0;	/* undefined */
 	buf->f_ffree = 0;	/* unlimited */
 
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 /* BB we could add a second check for a QFS Unix capability bit */
 /* BB FIXME check CIFS_POSIX_EXTENSIONS Unix cap first FIXME BB */
-    if (pTcon->ses->capabilities & CAP_UNIX)
+    if ((pTcon->ses->capabilities & CAP_UNIX) && (CIFS_POSIX_EXTENSIONS &
+			le64_to_cpu(pTcon->fsUnixInfo.Capability)))
 	    rc = CIFSSMBQFSPosixInfo(xid, pTcon, buf);
 
     /* Only need to call the old QFSInfo if failed
@@ -204,9 +206,10 @@ cifs_statfs(struct super_block *sb, struct kstatfs *buf)
 	   int f_type;
 	   __fsid_t f_fsid;
 	   int f_namelen;  */
-	/* BB get from info put in tcon struct at mount time with call to QFSAttrInfo */
+	/* BB get from info in tcon struct at mount time call to QFSAttrInfo */
 	FreeXid(xid);
-	return 0;		/* always return success? what if volume is no longer available? */
+	return 0;		/* always return success? what if volume is no
+				   longer available? */
 }
 
 static int cifs_permission(struct inode * inode, int mask, struct nameidata *nd)
@@ -600,9 +603,7 @@ struct file_operations cifs_dir_ops = {
 #ifdef CONFIG_CIFS_EXPERIMENTAL
 	.dir_notify = cifs_dir_notify,
 #endif /* CONFIG_CIFS_EXPERIMENTAL */
-#ifdef CONFIG_CIFS_POSIX
         .ioctl  = cifs_ioctl,
-#endif /* CONFIG_CIFS_POSIX */
 };
 
 static void

fs/cifs/cifsglob.h

@@ -318,7 +318,9 @@ struct mid_q_entry {
 	struct task_struct *tsk;	/* task waiting for response */
 	struct smb_hdr *resp_buf;	/* response buffer */
 	int midState;	/* wish this were enum but can not pass to wait_event */
-	__u8 command;		/* smb command code */
+	__u8 command;	/* smb command code */
+	unsigned multiPart:1;	/* multiple responses to one SMB request */
+	unsigned largeBuf:1;    /* if valid response, is pointer to large buf */
 };
 
 struct oplock_q_entry {

fs/cifs/ioctl.c

@@ -35,35 +35,37 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
 		unsigned int command, unsigned long arg)
 {
 	int rc = -ENOTTY; /* strange error - but the precedent */
+	int xid;
+	struct cifs_sb_info *cifs_sb;
 #ifdef CONFIG_CIFS_POSIX
 	__u64	ExtAttrBits = 0;
 	__u64	ExtAttrMask = 0;
-#endif /* CONFIG_CIFS_POSIX */
 	__u64   caps;
-	int xid;
-	struct cifs_sb_info *cifs_sb;
 	struct cifsTconInfo *tcon;
 	struct cifsFileInfo *pSMBFile =
 		(struct cifsFileInfo *)filep->private_data;
+#endif /* CONFIG_CIFS_POSIX */
 
 	xid = GetXid();
 
         cFYI(1,("ioctl file %p  cmd %u  arg %lu",filep,command,arg));
 
 	cifs_sb = CIFS_SB(inode->i_sb);
-	tcon = cifs_sb->tcon;
 
+#ifdef CONFIG_CIFS_POSIX
+	tcon = cifs_sb->tcon;
 	if(tcon)
 		caps = le64_to_cpu(tcon->fsUnixInfo.Capability);
 	else {
 		rc = -EIO;
-		goto cifs_ioctl_out;
+		FreeXid(xid);
+		return -EIO;
 	}
+#endif /* CONFIG_CIFS_POSIX */
 
 	switch(command) {
 		case CIFS_IOC_CHECKUMOUNT:
 			cFYI(1,("User unmount attempted"));
-			/* BB FIXME - add missing code here FIXME */
 			if(cifs_sb->mnt_uid == current->uid)
 				rc = 0;
 			else {
@@ -75,7 +77,7 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
 		case EXT2_IOC_GETFLAGS:
 			if(CIFS_UNIX_EXTATTR_CAP & caps) {
 				if (pSMBFile == NULL)
-					goto cifs_ioctl_out;
+					break;
 				rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid,
 					&ExtAttrBits, &ExtAttrMask);
 				if(rc == 0)
@@ -89,10 +91,10 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
 			if(CIFS_UNIX_EXTATTR_CAP & caps) {
 				if(get_user(ExtAttrBits,(int __user *)arg)) {
 					rc = -EFAULT;
-					goto cifs_ioctl_out;
+					break;
 				}
 				if (pSMBFile == NULL)
-					goto cifs_ioctl_out;
+					break;
 				/* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid,
 					extAttrBits, &ExtAttrMask);*/
 				
@@ -105,7 +107,6 @@ int cifs_ioctl (struct inode * inode, struct file * filep,
 			break;
 	}
 
-cifs_ioctl_out:
 	FreeXid(xid);
 	return rc;
 }