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diff --git a/apps/systemlib/param/param.h b/apps/systemlib/param/param.h
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-/****************************************************************************
- *
- *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name PX4 nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/**
- * @file param.h
- *
- * Global parameter store.
- *
- * Note that a number of API members are marked const or pure; these
- * assume that the set of parameters cannot change, or that a parameter
- * cannot change type or size over its lifetime.  If any of these assumptions
- * are invalidated, the attributes should be re-evaluated.
- */
-
-#ifndef _SYSTEMLIB_PARAM_PARAM_H
-#define _SYSTEMLIB_PARAM_PARAM_H
-
-#include <stdint.h>
-#include <stdbool.h>
-#include <sys/types.h>
-
-/** Maximum size of the parameter backing file */
-#define PARAM_FILE_MAXSIZE	4096
-
-__BEGIN_DECLS
-
-/**
- * Parameter types.
- */
-typedef enum param_type_e {
-	/* globally-known parameter types */
-	PARAM_TYPE_INT32 = 0,
-	PARAM_TYPE_FLOAT,
-
-	/* structure parameters; size is encoded in the type value */
-	PARAM_TYPE_STRUCT = 100,
-	PARAM_TYPE_STRUCT_MAX = 16384 + PARAM_TYPE_STRUCT,
-
-	PARAM_TYPE_UNKNOWN = 0xffff
-} param_type_t;
-
-/**
- * Parameter handle.
- *
- * Parameters are represented by parameter handles, which can
- * be obtained by looking up (or creating?) parameters.
- */
-typedef uintptr_t	param_t;
-
-/**
- * Handle returned when a parameter cannot be found.
- */
-#define PARAM_INVALID	((uintptr_t)0xffffffff)
-
-/**
- * Look up a parameter by name.
- *
- * @param name		The canonical name of the parameter being looked up.
- * @return		A handle to the parameter, or PARAM_INVALID if the parameter does not exist.
- */
-__EXPORT param_t	param_find(const char *name);
-
-/**
- * Return the total number of parameters.
- *
- * @return		The number of parameters.
- */
-__EXPORT unsigned	param_count(void);
-
-/**
- * Look up a parameter by index.
- *
- * @param index		An index from 0 to n, where n is param_count()-1.
- * @return		A handle to the parameter, or PARAM_INVALID if the index is out of range.
- */
-__EXPORT param_t	param_for_index(unsigned index);
-
-/**
- * Look up the index of a parameter.
- *
- * @param param		The parameter to obtain the index for.
- * @return		The index, or -1 if the parameter does not exist.
- */
-__EXPORT int		param_get_index(param_t param);
-
-/**
- * Obtain the name of a parameter.
- *
- * @param param		A handle returned by param_find or passed by param_foreach.
- * @return		The name assigned to the parameter, or NULL if the handle is invalid.
- */
-__EXPORT const char	*param_name(param_t param);
-
-/**
- * Test whether a parameter's value has changed from the default.
- *
- * @return		If true, the parameter's value has not been changed from the default.
- */
-__EXPORT bool		param_value_is_default(param_t param);
-
-/**
- * Test whether a parameter's value has been changed but not saved.
- *
- * @return		If true, the parameter's value has not been saved.
- */
-__EXPORT bool		param_value_unsaved(param_t param);
-
-/**
- * Obtain the type of a parameter.
- *
- * @param param		A handle returned by param_find or passed by param_foreach.
- * @return		The type assigned to the parameter.
- */
-__EXPORT param_type_t	param_type(param_t param);
-
-/**
- * Determine the size of a parameter.
- *
- * @param param		A handle returned by param_find or passed by param_foreach.
- * @return		The size of the parameter's value.
- */
-__EXPORT size_t		param_size(param_t param);
-
-/**
- * Copy the value of a parameter.
- *
- * @param param		A handle returned by param_find or passed by param_foreach.
- * @param val		Where to return the value, assumed to point to suitable storage for the parameter type.
- *			For structures, a bitwise copy of the structure is performed to this address.
- * @return		Zero if the parameter's value could be returned, nonzero otherwise.
- */
-__EXPORT int		param_get(param_t param, void *val);
-
-/**
- * Set the value of a parameter.
- *
- * @param param		A handle returned by param_find or passed by param_foreach.
- * @param val		The value to set; assumed to point to a variable of the parameter type.
- *			For structures, the pointer is assumed to point to a structure to be copied.
- * @return		Zero if the parameter's value could be set from a scalar, nonzero otherwise.
- */
-__EXPORT int		param_set(param_t param, const void *val);
-
-/**
- * Reset a parameter to its default value.
- *
- * This function frees any storage used by struct parameters, and returns the parameter
- * to its default value.
- *
- * @param param		A handle returned by param_find or passed by param_foreach.
- */
-__EXPORT void		param_reset(param_t param);
-
-/**
- * Reset all parameters to their default values.
- *
- * This function also releases the storage used by struct parameters.
- */
-__EXPORT void		param_reset_all(void);
-
-/**
- * Export changed parameters to a file.
- *
- * @param fd		File descriptor to export to.
- * @param only_unsaved	Only export changed parameters that have not yet been exported.
- * @return		Zero on success, nonzero on failure.
- */
-__EXPORT int		param_export(int fd, bool only_unsaved);
-
-/**
- * Import parameters from a file, discarding any unrecognized parameters.
- *
- * This function merges the imported parameters with the current parameter set.
- *
- * @param fd		File descriptor to import from.  (Currently expected to be a file.)
- * @return		Zero on success, nonzero if an error occurred during import.
- *			Note that in the failure case, parameters may be inconsistent.
- */
-__EXPORT int		param_import(int fd);
-
-/**
- * Load parameters from a file.
- *
- * This function resets all parameters to their default values, then loads new
- * values from a file.
- *
- * @param fd		File descriptor to import from.  (Currently expected to be a file.)
- * @return		Zero on success, nonzero if an error occurred during import.
- *			Note that in the failure case, parameters may be inconsistent.
- */
-__EXPORT int		param_load(int fd);
-
-/**
- * Apply a function to each parameter.
- *
- * Note that the parameter set is not locked during the traversal. It also does
- * not hold an internal state, so the callback function can block or sleep between
- * parameter callbacks.
- *
- * @param func		The function to invoke for each parameter.
- * @param arg		Argument passed to the function.
- * @param only_changed	If true, the function is only called for parameters whose values have
- *			been changed from the default.
- */
-__EXPORT void		param_foreach(void (*func)(void *arg, param_t param), void *arg, bool only_changed);
-
-/**
- * Set the default parameter file name.
- *
- * @param filename	Path to the default parameter file.  The file is not require to
- *			exist.
- * @return		Zero on success.
- */
-__EXPORT int 		param_set_default_file(const char* filename);
-
-/**
- * Get the default parameter file name.
- *
- * @return		The path to the current default parameter file; either as
- *			a result of a call to param_set_default_file, or the 
- *			built-in default.
- */
-__EXPORT const char*	param_get_default_file(void);
-
-/**
- * Save parameters to the default file.
- *
- * This function saves all parameters with non-default values.
- *
- * @return		Zero on success.
- */
-__EXPORT int 		param_save_default(void);
-
-/**
- * Load parameters from the default parameter file.
- *
- * @return		Zero on success.
- */
-__EXPORT int 		param_load_default(void);
-
-/*
- * Macros creating static parameter definitions.
- *
- * Note that these structures are not known by name; they are
- * collected into a section that is iterated by the parameter
- * code.
- *
- * Note that these macros cannot be used in C++ code due to
- * their use of designated initializers.  They should probably
- * be refactored to avoid the use of a union for param_value_u.
- */
-
-/** define an int32 parameter */
-#define PARAM_DEFINE_INT32(_name, _default)		\
-	static const					\
-	__attribute__((used, section("__param")))	\
-	struct param_info_s __param__##_name = {	\
-		#_name,					\
-		PARAM_TYPE_INT32,			\
-		.val.i = _default			\
-	}
-
-/** define a float parameter */
-#define PARAM_DEFINE_FLOAT(_name, _default)		\
-	static const					\
-	__attribute__((used, section("__param")))	\
-	struct param_info_s __param__##_name = {	\
-		#_name,					\
-		PARAM_TYPE_FLOAT,			\
-		.val.f = _default			\
-	}
-
-/** define a parameter that points to a structure */
-#define PARAM_DEFINE_STRUCT(_name, _default)		\
-	static const					\
-	__attribute__((used, section("__param")))	\
-	struct param_info_s __param__##_name = {	\
-		#_name,					\
-		PARAM_TYPE_STRUCT + sizeof(_default),	\
-		.val.p = &_default;			\
-	}
-
-/**
- * Parameter value union.
- */
-union param_value_u {
-	void		*p;
-	int32_t		i;
-	float		f;
-};
-
-/**
- * Static parameter definition structure.
- *
- * This is normally not used by user code; see the PARAM_DEFINE macros
- * instead.
- */
-struct param_info_s {
-	const char	*name;
-	param_type_t	type;
-	union param_value_u val;
-};
-
-__END_DECLS
-
-#endif