nvpair_impl.h

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    1 /*
    2  * CDDL HEADER START
    3  *
    4  * The contents of this file are subject to the terms of the
    5  * Common Development and Distribution License, Version 1.0 only
    6  * (the "License").  You may not use this file except in compliance
    7  * with the License.
    8  *
    9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   10  * or https://opensource.org/licenses/CDDL-1.0.
   11  * See the License for the specific language governing permissions
   12  * and limitations under the License.
   13  *
   14  * When distributing Covered Code, include this CDDL HEADER in each
   15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
   16  * If applicable, add the following below this CDDL HEADER, with the
   17  * fields enclosed by brackets "[]" replaced with your own identifying
   18  * information: Portions Copyright [yyyy] [name of copyright owner]
   19  *
   20  * CDDL HEADER END
   21  */
   22 /*
   23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   24  * Use is subject to license terms.
   25  */
   26 
   27 /*
   28  * Copyright (c) 2017 by Delphix. All rights reserved.
   29  */
   30 
   31 #ifndef _NVPAIR_IMPL_H
   32 #define _NVPAIR_IMPL_H
   33 
   34 #ifdef __cplusplus
   35 extern "C" {
   36 #endif
   37 
   38 #include <sys/nvpair.h>
   39 
   40 /*
   41  * The structures here provided for information and debugging purposes only
   42  * may be changed in the future.
   43  */
   44 
   45 /*
   46  * implementation linked list for pre-packed data
   47  */
   48 typedef struct i_nvp i_nvp_t;
   49 
   50 struct i_nvp {
   51         union {
   52                 /* ensure alignment */
   53                 uint64_t        _nvi_align;
   54 
   55                 struct {
   56                         /* pointer to next nvpair */
   57                         i_nvp_t *_nvi_next;
   58 
   59                         /* pointer to prev nvpair */
   60                         i_nvp_t *_nvi_prev;
   61 
   62                         /* next pair in table bucket */
   63                         i_nvp_t *_nvi_hashtable_next;
   64                 } _nvi;
   65         } _nvi_un;
   66 
   67         /* nvpair */
   68         nvpair_t nvi_nvp;
   69 };
   70 #define nvi_next        _nvi_un._nvi._nvi_next
   71 #define nvi_prev        _nvi_un._nvi._nvi_prev
   72 #define nvi_hashtable_next      _nvi_un._nvi._nvi_hashtable_next
   73 
   74 typedef struct {
   75         i_nvp_t         *nvp_list;      /* linked list of nvpairs */
   76         i_nvp_t         *nvp_last;      /* last nvpair */
   77         const i_nvp_t   *nvp_curr;      /* current walker nvpair */
   78         nv_alloc_t      *nvp_nva;       /* pluggable allocator */
   79         uint32_t        nvp_stat;       /* internal state */
   80 
   81         i_nvp_t         **nvp_hashtable; /* table of entries used for lookup */
   82         uint32_t        nvp_nbuckets;   /* # of buckets in hash table */
   83         uint32_t        nvp_nentries;   /* # of entries in hash table */
   84 } nvpriv_t;
   85 
   86 #ifdef  __cplusplus
   87 }
   88 #endif
   89 
   90 #endif  /* _NVPAIR_IMPL_H */

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/include/sys/nvpair_impl.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/nvpair_impl.h