usr/src/uts/common/sys/objfs_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 _OBJFS_IMPL_H
  27 #define _OBJFS_IMPL_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #include <sys/modctl.h>
  32 #include <sys/vfs.h>
  33 #include <sys/vnode.h>
  34 #include <sys/gfs.h>
  35 #include <sys/objfs.h>
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /*
  42  * VFS data object
  43  */
  44 typedef struct objfs_vfs {
  45         vnode_t *objfs_vfs_root;
  46 } objfs_vfs_t;
  47
  48 /*
  49  * Common vop_ entry points
  50  */
  51 extern int objfs_dir_open(vnode_t **, int, cred_t *, caller_context_t *);
  52 extern int objfs_dir_access(vnode_t *, int, int, cred_t *,
  53     caller_context_t *);
  54 extern int objfs_common_close(vnode_t *, int, int, offset_t, cred_t *,
  55     caller_context_t *);
  56
  57 /*
  58  * Common vop_ support functions
  59  */
  60 extern int objfs_common_getattr(vnode_t *, vattr_t *);
  61
  62 /*
  63  * Miscellaneous support functions
  64  */
  65 extern int objfs_nobjs(void);
  66
  67 #define OBJFS_NAME_MAX  MAXNAMELEN
  68
  69 /*
  70  * The root vnode has an inode number of 0xffffffff.  All other vnodes have an
  71  * inode that is an OR of the module id with the type of vnode.
  72  *
  73  * ----------------------------------------
  74  * |     type         |      mod_id       |
  75  * ----------------------------------------
  76  * 63                 31                  0
  77  *
  78  * This way, module directories will have an inode value equal to their module
  79  * id.
  80  */
  81
  82 #define OBJFS_INO(modid, type)  \
  83         (((uint64_t)(type) << 32) | (modid))
  84
  85 /*
  86  * Root directory
  87  */
  88 typedef gfs_dir_t       objfs_rootnode_t;
  89
  90 #define OBJFS_INO_ROOT  0xffffffff
  91
  92 extern const fs_operation_def_t objfs_tops_root[];
  93 extern vnodeops_t *objfs_ops_root;
  94
  95 extern vnode_t *objfs_create_root(vfs_t *);
  96
  97 /*
  98  * Object directory
  99  */
 100
 101 typedef struct objfs_odirnode {
 102         gfs_dir_t               objfs_odir_dir;         /* gfs dir */
 103         struct modctl           *objfs_odir_modctl;     /* modctl pointer */
 104 } objfs_odirnode_t;
 105
 106 #define OBJFS_INO_ODIR(modid)   OBJFS_INO(modid, 0)
 107
 108 extern const fs_operation_def_t objfs_tops_odir[];
 109 extern vnodeops_t *objfs_ops_odir;
 110
 111 extern vnode_t *objfs_create_odirnode(vnode_t *, struct modctl *);
 112
 113 /*
 114  * Data file
 115  */
 116 typedef struct objfs_datanode {
 117         gfs_file_t              objfs_data_file;        /* gfs file */
 118         objfs_info_t            objfs_data_info;
 119         int                     objfs_data_gencount;    /* gen when opened */
 120 } objfs_datanode_t;
 121
 122 #define OBJFS_INO_DATA(modid)   OBJFS_INO(modid, 1)
 123
 124 extern const fs_operation_def_t objfs_tops_data[];
 125 extern vnodeops_t *objfs_ops_data;
 126
 127 extern void objfs_data_init(void);
 128 extern vnode_t *objfs_create_data(vnode_t *);
 129
 130 #ifdef  __cplusplus
 131 }
 132 #endif
 133
 134 #endif  /* _OBJFS_IMPL_H */