[PATCH] xattr updates (minor, 2/4)

This incremental patch fixes copying out of an extended attribute
value or name list.  Previously we copied out the entire buffer
passed in from userspace, now we only copy out the size which the
underlying filesystem tells us to (ie. we will no longer include
potentialy-initialised data as well).

Nathan

fs/xattr.c

@@ -163,7 +163,7 @@ getxattr(struct dentry *d, char *name, void *value, size_t size)
 	}
 
 	if (kvalue && error > 0)
-		if (copy_to_user(value, kvalue, size))
+		if (copy_to_user(value, kvalue, error))
 			error = -EFAULT;
 	xattr_free(kvalue, size);
 	return error;
@@ -232,7 +232,7 @@ listxattr(struct dentry *d, char *list, size_t size)
 	}
 
 	if (klist && error > 0)
-		if (copy_to_user(list, klist, size))
+		if (copy_to_user(list, klist, error))
 			error = -EFAULT;
 	xattr_free(klist, size);
 	return error;