usr/src/uts/common/sys/fs/bootfs_impl.h

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright (c) 2014 Joyent, Inc.  All rights reserved.
  14  */
  15
  16 #ifndef _SYS_FS_BOOTFS_IMPL_H
  17 #define _SYS_FS_BOOTFS_IMPL_H
  18
  19 #include <sys/types.h>
  20 #include <sys/list.h>
  21 #include <sys/avl.h>
  22 #include <sys/vnode.h>
  23 #include <sys/vfs_opreg.h>
  24 #include <sys/kstat.h>
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 /*
  31  * The bootfs node is the file system specific version of the vnode for the
  32  * bootfs file system. Because the bootfs file system is entirely a read-only
  33  * file system, this structure requires no locking as the contents are
  34  * immutable.
  35  */
  36 typedef struct bootfs_node {
  37         char                    *bvn_name;      /* entry name */
  38         struct vnode            *bvn_vnp;       /* Corresponding vnode */
  39         avl_tree_t              bvn_dir;        /* directory entries, if VDIR */
  40         avl_node_t              bvn_link;       /* dirent link */
  41         list_node_t             bvn_alink;      /* link for all nodes */
  42         uint64_t                bvn_addr;       /* Address in pmem */
  43         uint64_t                bvn_size;       /* Size of the file */
  44         struct bootfs_node      *bvn_parent;    /* .. */
  45         vattr_t                 bvn_attr;       /* attributes for the node */
  46 } bootfs_node_t;
  47
  48 typedef struct bootfs_stat {
  49         kstat_named_t   bfss_nfiles;
  50         kstat_named_t   bfss_ndirs;
  51         kstat_named_t   bfss_nbytes;
  52         kstat_named_t   bfss_ndups;
  53         kstat_named_t   bfss_ndiscards;
  54 } bootfs_stat_t;
  55
  56 typedef struct bootfs {
  57         vfs_t                   *bfs_vfsp;
  58         char                    *bfs_mntpath;
  59         bootfs_node_t           *bfs_rootvn;
  60         kstat_t                 *bfs_kstat;
  61         list_t                  bfs_nodes;
  62         minor_t                 bfs_minor;
  63         uint_t                  bfs_ninode;
  64         bootfs_stat_t           bfs_stat;
  65 } bootfs_t;
  66
  67 extern void bootfs_construct(bootfs_t *);
  68 extern void bootfs_destruct(bootfs_t *);
  69 extern int bootfs_node_constructor(void *, void *, int);
  70 extern void bootfs_node_destructor(void *, void *);
  71
  72 extern struct vnodeops *bootfs_vnodeops;
  73 extern const fs_operation_def_t bootfs_vnodeops_template[];
  74 extern kmem_cache_t *bootfs_node_cache;
  75 extern major_t bootfs_major;
  76
  77 #ifdef __cplusplus
  78 }
  79 #endif
  80
  81 #endif /* _SYS_FS_BOOTFS_IMPL_H */