/** Execute a command.
*/
-valerie_error_code valerie_execute( valerie this, size_t size, char *format, ... )
+valerie_error_code valerie_execute( valerie this, size_t size, const char *format, ... )
{
valerie_error_code error = valerie_server_unavailable;
char *command = malloc( size );
/** Set a unit configuration property.
*/
-valerie_error_code valerie_unit_set( valerie this, int unit, char *name, char *value )
+valerie_error_code valerie_unit_set( valerie this, int unit, const char *name, const char *value )
{
return valerie_execute( this, 1024, "USET U%d %s=%s", unit, name, value );
}