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

     /*-
      * Copyright (c) 2013 The FreeBSD Foundation
      * All rights reserved.
      *
      * This software was developed by Pawel Jakub Dawidek under sponsorship from
      * the FreeBSD Foundation.
      *
      * 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _NV_IMPL_H_
    #define _NV_IMPL_H_
    
    #ifndef _NVPAIR_T_DECLARED
    #define _NVPAIR_T_DECLARED
    struct nvpair;
    
    typedef struct nvpair nvpair_t;
    #endif
    
    #define NV_TYPE_NVLIST_UP               255
    
    #define NV_TYPE_FIRST           NV_TYPE_NULL
    #define NV_TYPE_LAST            NV_TYPE_BINARY
    
    #define NV_FLAG_BIG_ENDIAN              0x80
    
    #ifdef _KERNEL
    #define nv_malloc(size)                 malloc((size), M_NVLIST, M_NOWAIT)
    #define nv_calloc(n, size)              malloc((n) * (size), M_NVLIST, \
                                                M_NOWAIT | M_ZERO)
    #define nv_realloc(buf, size)           realloc((buf), (size), M_NVLIST, \
                                                M_NOWAIT)
    #define nv_free(buf)                    free((buf), M_NVLIST)
    #define nv_strdup(buf)                  strdup((buf), M_NVLIST)
    #define nv_vasprintf(ptr, ...)          vasprintf(ptr, M_NVLIST, __VA_ARGS__)
    
    #define SAVE_ERRNO(var)                 ((void)(var))
    #define RESTORE_ERRNO(var)              ((void)(var))
    
    #define ERRNO_OR_DEFAULT(default)       (default)
    
    #else
    
    #define nv_malloc(size)                 malloc((size))
    #define nv_calloc(n, size)              calloc((n), (size))
    #define nv_realloc(buf, size)           realloc((buf), (size))
    #define nv_free(buf)                    free((buf))
    #define nv_strdup(buf)                  strdup((buf))
    #define nv_vasprintf(ptr, ...)          vasprintf(ptr, __VA_ARGS__)
    
    #define SAVE_ERRNO(var)                 (var) = errno
    #define RESTORE_ERRNO(var)              errno = (var)
    
    #define ERRNO_OR_DEFAULT(default)       (errno == 0 ? (default) : errno)
    
    #endif
    
    int     *nvlist_descriptors(const nvlist_t *nvl, size_t *nitemsp);
    size_t   nvlist_ndescriptors(const nvlist_t *nvl);
    
    nvpair_t *nvlist_first_nvpair(const nvlist_t *nvl);
    nvpair_t *nvlist_next_nvpair(const nvlist_t *nvl, const nvpair_t *nvp);
    nvpair_t *nvlist_prev_nvpair(const nvlist_t *nvl, const nvpair_t *nvp);
    
    void nvlist_add_nvpair(nvlist_t *nvl, const nvpair_t *nvp);
    
    void nvlist_move_nvpair(nvlist_t *nvl, nvpair_t *nvp);
    
    void nvlist_set_parent(nvlist_t *nvl, nvpair_t *parent);
    
    const nvpair_t *nvlist_get_nvpair(const nvlist_t *nvl, const char *name);
    
    nvpair_t *nvlist_take_nvpair(nvlist_t *nvl, const char *name);
    
    /* Function removes the given nvpair from the nvlist. */
    void nvlist_remove_nvpair(nvlist_t *nvl, nvpair_t *nvp);
    
   void nvlist_free_nvpair(nvlist_t *nvl, nvpair_t *nvp);
   
   int nvpair_type(const nvpair_t *nvp);
   const char *nvpair_name(const nvpair_t *nvp);
   
   nvpair_t *nvpair_clone(const nvpair_t *nvp);
   
   nvpair_t *nvpair_create_null(const char *name);
   nvpair_t *nvpair_create_bool(const char *name, bool value);
   nvpair_t *nvpair_create_number(const char *name, uint64_t value);
   nvpair_t *nvpair_create_string(const char *name, const char *value);
   nvpair_t *nvpair_create_stringf(const char *name, const char *valuefmt, ...) __printflike(2, 3);
   nvpair_t *nvpair_create_stringv(const char *name, const char *valuefmt, va_list valueap) __printflike(2, 0);
   nvpair_t *nvpair_create_nvlist(const char *name, const nvlist_t *value);
   nvpair_t *nvpair_create_descriptor(const char *name, int value);
   nvpair_t *nvpair_create_binary(const char *name, const void *value, size_t size);
   
   nvpair_t *nvpair_move_string(const char *name, char *value);
   nvpair_t *nvpair_move_nvlist(const char *name, nvlist_t *value);
   nvpair_t *nvpair_move_descriptor(const char *name, int value);
   nvpair_t *nvpair_move_binary(const char *name, void *value, size_t size);
   
   bool             nvpair_get_bool(const nvpair_t *nvp);
   uint64_t         nvpair_get_number(const nvpair_t *nvp);
   const char      *nvpair_get_string(const nvpair_t *nvp);
   const nvlist_t  *nvpair_get_nvlist(const nvpair_t *nvp);
   int              nvpair_get_descriptor(const nvpair_t *nvp);
   const void      *nvpair_get_binary(const nvpair_t *nvp, size_t *sizep);
   
   void nvpair_free(nvpair_t *nvp);
   
   #endif  /* !_NV_IMPL_H_ */

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