/*- * Copyright (c) 2016 Landon Fuller * 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, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any * redistribution must be conditioned upon including a substantially * similar Disclaimer requirement for further binary redistribution. * * NO WARRANTY * 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 NONINFRINGEMENT, MERCHANTIBILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. * */ #ifndef _BHND_NVRAM_BHND_NVRAM_DATAVAR_H_ #define _BHND_NVRAM_BHND_NVRAM_DATAVAR_H_ #include #include #include #include "bhnd_nvram_io.h" #include "bhnd_nvram_data.h" /** Registered NVRAM parser class instances. */ SET_DECLARE(bhnd_nvram_data_class_set, bhnd_nvram_data_class); void *bhnd_nvram_data_generic_find( struct bhnd_nvram_data *nv, const char *name); int bhnd_nvram_data_generic_rp_getvar( struct bhnd_nvram_data *nv, void *cookiep, void *outp, size_t *olen, bhnd_nvram_type otype); int bhnd_nvram_data_generic_rp_copy_val( struct bhnd_nvram_data *nv, void *cookiep, bhnd_nvram_val **val); /** @see bhnd_nvram_data_probe() */ typedef int (bhnd_nvram_data_op_probe)(struct bhnd_nvram_io *io); /** @see bhnd_nvram_data_probe() */ typedef int (bhnd_nvram_data_op_getvar_direct)( struct bhnd_nvram_io *io, const char *name, void *outp, size_t *olen, bhnd_nvram_type otype); /** @see bhnd_nvram_data_serialize() */ typedef int (bhnd_nvram_data_op_serialize)( bhnd_nvram_data_class *cls, bhnd_nvram_plist *props, bhnd_nvram_plist *options, void *outp, size_t *olen); /** @see bhnd_nvram_data_new() */ typedef int (bhnd_nvram_data_op_new)(struct bhnd_nvram_data *nv, struct bhnd_nvram_io *io); /** Free all resources associated with @p nv. Called by * bhnd_nvram_data_release() when the reference count reaches zero. */ typedef void (bhnd_nvram_data_op_free)(struct bhnd_nvram_data *nv); /** @see bhnd_nvram_data_count() */ typedef size_t (bhnd_nvram_data_op_count)(struct bhnd_nvram_data *nv); /** @see bhnd_nvram_data_options() */ typedef bhnd_nvram_plist*(bhnd_nvram_data_op_options)( struct bhnd_nvram_data *nv); /** @see bhnd_nvram_data_caps() */ typedef uint32_t (bhnd_nvram_data_op_caps)(struct bhnd_nvram_data *nv); /** @see bhnd_nvram_data_next() */ typedef const char *(bhnd_nvram_data_op_next)(struct bhnd_nvram_data *nv, void **cookiep); /** @see bhnd_nvram_data_find() */ typedef void *(bhnd_nvram_data_op_find)(struct bhnd_nvram_data *nv, const char *name); /** @see bhnd_nvram_data_copy_val() */ typedef int (bhnd_nvram_data_op_copy_val)( struct bhnd_nvram_data *nv, void *cookiep, bhnd_nvram_val **value); /** @see bhnd_nvram_data_getvar_order() */ typedef int (bhnd_nvram_data_op_getvar_order)( struct bhnd_nvram_data *nv, void *cookiep1, void *cookiep2); /** @see bhnd_nvram_data_getvar_name() */ typedef const char *(bhnd_nvram_data_op_getvar_name)( struct bhnd_nvram_data *nv, void *cookiep); /** @see bhnd_nvram_data_getvar() */ typedef int (bhnd_nvram_data_op_getvar)(struct bhnd_nvram_data *nv, void *cookiep, void *buf, size_t *len, bhnd_nvram_type type); /** @see bhnd_nvram_data_getvar_ptr() */ typedef const void *(bhnd_nvram_data_op_getvar_ptr)( struct bhnd_nvram_data *nv, void *cookiep, size_t *len, bhnd_nvram_type *type); /** @see bhnd_nvram_data_filter_setvar() */ typedef int (bhnd_nvram_data_op_filter_setvar)( struct bhnd_nvram_data *nv, const char *name, bhnd_nvram_val *value, bhnd_nvram_val **result); /** @see bhnd_nvram_data_filter_unsetvar() */ typedef int (bhnd_nvram_data_op_filter_unsetvar)( struct bhnd_nvram_data *nv, const char *name); /** * NVRAM data class. */ struct bhnd_nvram_data_class { const char *desc; /**< description */ uint32_t caps; /**< capabilities (BHND_NVRAM_DATA_CAP_*) */ size_t size; /**< instance size */ bhnd_nvram_data_op_probe *op_probe; bhnd_nvram_data_op_getvar_direct *op_getvar_direct; bhnd_nvram_data_op_serialize *op_serialize; bhnd_nvram_data_op_new *op_new; bhnd_nvram_data_op_free *op_free; bhnd_nvram_data_op_count *op_count; bhnd_nvram_data_op_options *op_options; bhnd_nvram_data_op_caps *op_caps; bhnd_nvram_data_op_next *op_next; bhnd_nvram_data_op_find *op_find; bhnd_nvram_data_op_copy_val *op_copy_val; bhnd_nvram_data_op_getvar_order *op_getvar_order; bhnd_nvram_data_op_getvar *op_getvar; bhnd_nvram_data_op_getvar_ptr *op_getvar_ptr; bhnd_nvram_data_op_getvar_name *op_getvar_name; bhnd_nvram_data_op_filter_setvar *op_filter_setvar; bhnd_nvram_data_op_filter_unsetvar *op_filter_unsetvar; }; /** * NVRAM data instance. */ struct bhnd_nvram_data { struct bhnd_nvram_data_class *cls; volatile u_int refs; }; /* * Helper macro for BHND_NVRAM_DATA_CLASS_DEFN(). * * Declares a bhnd_nvram_data_class method implementation with class name * _cname and method name _mname */ #define BHND_NVRAM_DATA_CLASS_DECL_METHOD(_cname, _mname) \ static bhnd_nvram_data_op_ ## _mname \ bhnd_nvram_ ## _cname ## _ ## _mname; \ /* * Helper macro for BHND_NVRAM_DATA_CLASS_DEFN(). * * Assign a bhnd_nvram_data_class method implementation with class name * @p _cname and method name @p _mname */ #define BHND_NVRAM_DATA_CLASS_ASSIGN_METHOD(_cname, _mname) \ .op_ ## _mname = bhnd_nvram_ ## _cname ## _ ## _mname, /* * Helper macro for BHND_NVRAM_DATA_CLASS_DEFN(). * * Iterate over all bhnd_nvram_data_class method names, calling * _macro with the class name _cname as the first argument, and * a bhnd_nvram_data_class method name as the second. */ #define BHND_NVRAM_DATA_CLASS_ITER_METHODS(_cname, _macro) \ _macro(_cname, probe) \ _macro(_cname, getvar_direct) \ _macro(_cname, serialize) \ _macro(_cname, new) \ _macro(_cname, free) \ _macro(_cname, count) \ _macro(_cname, options) \ _macro(_cname, caps) \ _macro(_cname, next) \ _macro(_cname, find) \ _macro(_cname, copy_val) \ _macro(_cname, getvar_order) \ _macro(_cname, getvar) \ _macro(_cname, getvar_ptr) \ _macro(_cname, getvar_name) \ _macro(_cname, filter_setvar) \ _macro(_cname, filter_unsetvar) /** * Define a bhnd_nvram_data_class with class name @p _n and description * @p _desc, and register with bhnd_nvram_data_class_set. */ #define BHND_NVRAM_DATA_CLASS_DEFN(_cname, _desc, _caps, _size) \ BHND_NVRAM_DATA_CLASS_ITER_METHODS(_cname, \ BHND_NVRAM_DATA_CLASS_DECL_METHOD) \ \ struct bhnd_nvram_data_class bhnd_nvram_## _cname ## _class = { \ .desc = (_desc), \ .caps = (_caps), \ .size = (_size), \ BHND_NVRAM_DATA_CLASS_ITER_METHODS(_cname, \ BHND_NVRAM_DATA_CLASS_ASSIGN_METHOD) \ }; \ \ DATA_SET(bhnd_nvram_data_class_set, \ bhnd_nvram_## _cname ## _class); #endif /* _BHND_NVRAM_BHND_NVRAM_DATAVAR_H_ */