FreeBSD/Linux Kernel Cross Reference
sys/sys/cnv.h

     /*-
      * Copyright (c) 2016 Adam Starak <starak.adam@gmail.com>
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.
     *
     * $FreeBSD: stable/11/sys/sys/cnv.h 336346 2018-07-16 15:02:21Z kevans $
     */
    
    #ifndef _CNV_H_
    #define _CNV_H_
    
    #include <sys/cdefs.h>
    
    #ifndef _KERNEL
    #include <stdarg.h>
    #include <stdbool.h>
    #include <stdint.h>
    #include <stdio.h>
    #endif
    
    #ifndef _NVLIST_T_DECLARED
    #define _NVLIST_T_DECLARED
    struct nvlist;
    
    typedef struct nvlist nvlist_t;
    #endif
    
    __BEGIN_DECLS
    
    /*
     * Functions which returns information about the given cookie.
     */
    const char      *cnvlist_name(const void *cookie);
    int              cnvlist_type(const void *cookie);
    
    /*
     * The cnvlist_get functions returns value associated with the given cookie.
     * If it returns a pointer, the pointer represents internal buffer and should
     * not be freed by the caller.
     */
    
    bool                     cnvlist_get_bool(const void *cookie);
    uint64_t                 cnvlist_get_number(const void *cookie);
    const char              *cnvlist_get_string(const void *cookie);
    const nvlist_t          *cnvlist_get_nvlist(const void *cookie);
    const void              *cnvlist_get_binary(const void *cookie, size_t *sizep);
    const bool              *cnvlist_get_bool_array(const void *cookie, size_t *nitemsp);
    const uint64_t          *cnvlist_get_number_array(const void *cookie, size_t *nitemsp);
    const char * const      *cnvlist_get_string_array(const void *cookie, size_t *nitemsp);
    const nvlist_t * const  *cnvlist_get_nvlist_array(const void *cookie, size_t *nitemsp);
    #ifndef _KERNEL
    int                      cnvlist_get_descriptor(const void *cookie);
    const int               *cnvlist_get_descriptor_array(const void *cookie, size_t *nitemsp);
    #endif
    
    
    /*
     * The cnvlist_take functions returns value associated with the given cookie and
     * remove the given entry from the nvlist.
     * The caller is responsible for freeing received data.
     */
    
    bool                      cnvlist_take_bool(void *cookie);
    uint64_t                  cnvlist_take_number(void *cookie);
    char                     *cnvlist_take_string(void *cookie);
    nvlist_t                 *cnvlist_take_nvlist(void *cookie);
    void                     *cnvlist_take_binary(void *cookie, size_t *sizep);
    bool                     *cnvlist_take_bool_array(void *cookie, size_t *nitemsp);
    uint64_t                 *cnvlist_take_number_array(void *cookie, size_t *nitemsp);
    char                    **cnvlist_take_string_array(void *cookie, size_t *nitemsp);
    nvlist_t                **cnvlist_take_nvlist_array(void *cookie, size_t *nitemsp);
    #ifndef _KERNEL
    int                       cnvlist_take_descriptor(void *cookie);
    int                      *cnvlist_take_descriptor_array(void *cookie, size_t *nitemsp);
    #endif
    
    /*
     * The cnvlist_free functions removes the given name/value pair from the nvlist based on cookie
     * and frees memory associated with it.
    */
   
   void    cnvlist_free_bool(void *cookie);
   void    cnvlist_free_number(void *cookie);
   void    cnvlist_free_string(void *cookie);
   void    cnvlist_free_nvlist(void *cookie);
   void    cnvlist_free_binary(void *cookie);
   void    cnvlist_free_bool_array(void *cookie);
   void    cnvlist_free_number_array(void *cookie);
   void    cnvlist_free_string_array(void *cookie);
   void    cnvlist_free_nvlist_array(void *cookie);
   #ifndef _KERNEL
   void    cnvlist_free_descriptor(void *cookie);
   void    cnvlist_free_descriptor_array(void *cookie);
   #endif
   
   __END_DECLS
   
   #endif  /* !_CNV_H_ */

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