usr/src/uts/common/sys/ctfs_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 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_CTFS_IMPL_H
  27 #define _SYS_CTFS_IMPL_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #include <sys/contract.h>
  32 #include <sys/gfs.h>
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /*
  39  * Inode numbers
  40  */
  41
  42 /*
  43  * Root inode:
  44  * ---------------------------------------------------
  45  * |                       0                         |
  46  * ---------------------------------------------------
  47  * 63                                                0
  48  */
  49
  50 #define CTFS_INO_ROOT 0
  51
  52 /*
  53  * Contract-specific file:
  54  * ---------------------------------------------------
  55  * |1|    file (62:32)     |   contract id (31:0)    |
  56  * ---------------------------------------------------
  57  * 63                                                0
  58  *      file = 0 : directory
  59  *      file = 1 : "all" directory symlink
  60  *      file > 1 : special files ("ctl", "status", etc.)
  61  */
  62
  63 #define CTFS_INO_CT_SHIFT       32
  64 #define CTFS_INO_CT(ctid, file) \
  65         ((1ULL << 63) | \
  66         ((unsigned long long)(file) << CTFS_INO_CT_SHIFT) | \
  67         (ctid))
  68 #define CTFS_INO_CT_DIR(ctid)           CTFS_INO_CT((ctid), 0)
  69 #define CTFS_INO_CT_LINK(ctid)          CTFS_INO_CT((ctid), 1)
  70 #define CTFS_INO_CT_FILE(ctid, file)    CTFS_INO_CT((ctid), (file) + 2)
  71
  72 /*
  73  * Type-specific file:
  74  * ---------------------------------------------------
  75  * |          0         | type (31:16) | file (15:0) |
  76  * ---------------------------------------------------
  77  * 63                                                0
  78  *      type = 0 : invalid
  79  *      type > 0 : contract type index + 1 ("all" is #types + 1)
  80  *      file = 0 : directory
  81  *      file > 0 : special files ("template", "latest", etc.)
  82  */
  83
  84 #define CTFS_INO_TYPE_SHIFT     16
  85 #define CTFS_INO_TYPE(type, file)       \
  86         (((type) + 1) << CTFS_INO_TYPE_SHIFT | (file))
  87 #define CTFS_INO_TYPE_DIR(type)         CTFS_INO_TYPE((type), 0)
  88 #define CTFS_INO_TYPE_FILE(type, file)  CTFS_INO_TYPE((type), (file) + 1)
  89
  90 /*
  91  * Other constants
  92  */
  93 #define CTFS_NAME_MAX           32
  94
  95 /*
  96  * Possible values for ctfs_endpt_flags, below.
  97  */
  98 #define CTFS_ENDPT_SETUP        0x1
  99 #define CTFS_ENDPT_NBLOCK       0x2
 100
 101 /*
 102  * Common endpoint object.
 103  */
 104 typedef struct ctfs_endpoint {
 105         kmutex_t        ctfs_endpt_lock;
 106         ct_listener_t   ctfs_endpt_listener;
 107         uint_t          ctfs_endpt_flags;
 108 } ctfs_endpoint_t;
 109
 110 /*
 111  * root directory data
 112  */
 113 typedef gfs_dir_t       ctfs_rootnode_t;
 114
 115 /*
 116  * /all directory data
 117  */
 118 typedef gfs_dir_t       ctfs_adirnode_t;
 119
 120 /*
 121  * /all symlink data
 122  */
 123 typedef struct ctfs_symnode {
 124         gfs_file_t      ctfs_sn_file;           /* gfs file */
 125         contract_t      *ctfs_sn_contract;      /* target contract */
 126         char            *ctfs_sn_string;        /* target path */
 127         size_t          ctfs_sn_size;           /* length of target path */
 128 } ctfs_symnode_t;
 129
 130 /*
 131  * contract type directory data
 132  */
 133 typedef gfs_dir_t       ctfs_tdirnode_t;
 134
 135 /*
 136  * contract directory data
 137  */
 138 typedef struct ctfs_cdirnode {
 139         gfs_dir_t       ctfs_cn_dir;            /* directory contents */
 140         contract_t      *ctfs_cn_contract;      /* contract pointer */
 141         contract_vnode_t ctfs_cn_linkage;       /* contract vnode list node */
 142 } ctfs_cdirnode_t;
 143
 144 /*
 145  * template file data
 146  */
 147 typedef struct ctfs_tmplnode {
 148         gfs_file_t      ctfs_tmn_file;          /* gfs file */
 149         ct_template_t   *ctfs_tmn_tmpl;         /* template pointer */
 150 } ctfs_tmplnode_t;
 151
 152 /*
 153  * ctl and status file data
 154  */
 155 typedef struct ctfs_ctlnode {
 156         gfs_file_t      ctfs_ctl_file;          /* gfs file */
 157         contract_t      *ctfs_ctl_contract;     /* contract pointer */
 158 } ctfs_ctlnode_t;
 159
 160 /*
 161  * latest file data
 162  */
 163 typedef gfs_dir_t       ctfs_latenode_t;
 164
 165 /*
 166  * events file data
 167  */
 168 typedef struct ctfs_evnode {
 169         gfs_file_t      ctfs_ev_file;           /* gfs file */
 170         contract_t      *ctfs_ev_contract;      /* contract we're watching */
 171         ctfs_endpoint_t ctfs_ev_listener;       /* common endpoint data */
 172 } ctfs_evnode_t;
 173
 174 /*
 175  * bundle and pbundle file data
 176  */
 177 typedef struct ctfs_bunode {
 178         gfs_file_t      ctfs_bu_file;           /* gfs file */
 179         ct_equeue_t     *ctfs_bu_queue;         /* queue we're watching */
 180         ctfs_endpoint_t ctfs_bu_listener;       /* common endpoint data */
 181 } ctfs_bunode_t;
 182
 183 /*
 184  * VFS data object
 185  */
 186 typedef struct ctfs_vfs {
 187         vnode_t *ctvfs_root;            /* root vnode pointer */
 188 } ctfs_vfs_t;
 189
 190 /*
 191  * vnode creation routines
 192  */
 193 extern vnode_t *ctfs_create_tdirnode(vnode_t *);
 194 extern vnode_t *ctfs_create_tmplnode(vnode_t *);
 195 extern vnode_t *ctfs_create_latenode(vnode_t *);
 196 extern vnode_t *ctfs_create_pbundle(vnode_t *);
 197 extern vnode_t *ctfs_create_bundle(vnode_t *);
 198 extern vnode_t *ctfs_create_ctlnode(vnode_t *);
 199 extern vnode_t *ctfs_create_statnode(vnode_t *);
 200 extern vnode_t *ctfs_create_evnode(vnode_t *);
 201 extern vnode_t *ctfs_create_adirnode(vnode_t *);
 202 extern vnode_t *ctfs_create_cdirnode(vnode_t *, contract_t *);
 203 extern vnode_t *ctfs_create_symnode(vnode_t *, contract_t *);
 204
 205 /*
 206  * common ctfs routines
 207  */
 208 extern void ctfs_common_getattr(vnode_t *, vattr_t *);
 209 extern int ctfs_close(vnode_t *, int, int, offset_t, cred_t *,
 210                 caller_context_t *);
 211 extern int ctfs_access_dir(vnode_t *, int, int, cred_t *,
 212                 caller_context_t *);
 213 extern int ctfs_access_readonly(vnode_t *, int, int, cred_t *,
 214                 caller_context_t *);
 215 extern int ctfs_access_readwrite(vnode_t *, int, int, cred_t *,
 216                 caller_context_t *);
 217 extern int ctfs_open(vnode_t **, int, cred_t *,
 218                 caller_context_t *);
 219
 220 /*
 221  * vnode ops vector templates
 222  */
 223 extern vnodeops_t *ctfs_ops_root;
 224 extern vnodeops_t *ctfs_ops_adir;
 225 extern vnodeops_t *ctfs_ops_sym;
 226 extern vnodeops_t *ctfs_ops_tdir;
 227 extern vnodeops_t *ctfs_ops_tmpl;
 228 extern vnodeops_t *ctfs_ops_cdir;
 229 extern vnodeops_t *ctfs_ops_ctl;
 230 extern vnodeops_t *ctfs_ops_stat;
 231 extern vnodeops_t *ctfs_ops_event;
 232 extern vnodeops_t *ctfs_ops_bundle;
 233 extern vnodeops_t *ctfs_ops_latest;
 234
 235 #ifdef  __cplusplus
 236 }
 237 #endif
 238
 239 #endif  /* _SYS_CTFS_IMPL_H */