usr/src/uts/common/nfs/nfs4_idmap_impl.h

   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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24
  25 #ifndef _NFS4_IDMAP_IMPL_H
  26 #define _NFS4_IDMAP_IMPL_H
  27
  28 #include <sys/list.h>
  29 #include <sys/door.h>
  30 #include <sys/pkp_hash.h>
  31
  32 /*
  33  * This is a private header file.  Applications should not directly include
  34  * this file.
  35  */
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /*
  42  * Cache Entry Definitions
  43  */
  44 #define NFSID_CACHE_ANCHORS     PKP_HASH_SIZE
  45
  46 typedef struct nfsidmap {
  47         struct nfsidmap *id_chain[2];   /* must be first */
  48         time_t           id_time;       /* time stamp */
  49         uid_t            id_no;         /* uid/gid */
  50         utf8string       id_str;        /* user@domain string */
  51 } nfsidmap_t;
  52
  53 #define id_forw                 id_chain[0]
  54 #define id_back                 id_chain[1]
  55 #define id_len                  id_str.utf8string_len
  56 #define id_val                  id_str.utf8string_val
  57
  58 typedef struct nfsidhq {
  59         union {
  60                 struct nfsidhq  *hq_head[2];    /* for empty queue */
  61                 struct nfsidmap *hq_chain[2];   /* for LRU list */
  62         } hq_link;
  63         kmutex_t        hq_lock;                /* protects hash queue */
  64 } nfsidhq_t;
  65
  66 #define hq_que_forw             hq_link.hq_head[0]
  67 #define hq_que_back             hq_link.hq_head[1]
  68 #define hq_lru_forw             hq_link.hq_chain[0]
  69 #define hq_lru_back             hq_link.hq_chain[1]
  70
  71 typedef struct {
  72         const char      *name;          /* cache name */
  73         nfsidhq_t       *table;         /* hash table */
  74         /*
  75          * Since we need to know the status of nfsmapid from random functions
  76          * that deal with idmap caches, we keep a pointer to the relevant fields
  77          * in the zone's globals so we don't have to keep passing them around.
  78          */
  79         door_handle_t           *nfsidmap_daemon_dh;
  80 } idmap_cache_info_t;
  81
  82 typedef enum hash_stat { HQ_HASH_HINT, HQ_HASH_FIND } hash_stat;
  83
  84 /*
  85  * Per-zone modular globals
  86  */
  87 struct nfsidmap_globals {
  88         list_node_t             nig_link; /* linkage into global list */
  89         enum clnt_stat          nig_last_stat;  /* status of last RPC call */
  90         int                     nig_msg_done;   /* have we printed a message? */
  91         idmap_cache_info_t      u2s_ci; /* table mapping uid-to-string */
  92         idmap_cache_info_t      s2u_ci; /* table mapping string-to-uid */
  93         idmap_cache_info_t      g2s_ci; /* table mapping groupid-to-string */
  94         idmap_cache_info_t      s2g_ci; /* table mapping string-to-groupid */
  95         pid_t                   nfsidmap_pid;
  96         kmutex_t                nfsidmap_daemon_lock;
  97         /*
  98          * nfsidmap_daemon_lock protects the following:
  99          *      nfsidmap_daemon_dh
 100          */
 101         door_handle_t           nfsidmap_daemon_dh;
 102 };
 103
 104 #ifdef  __cplusplus
 105 }
 106 #endif
 107
 108 #endif /* _NFS4_IDMAP_IMPL_H */