sys/fs/efs/efs_inode.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 2006 Stephen M. Rumble <rumble@ephemeral.org>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #ifndef _FS_EFS_EFS_INODE_H_
  20 #define _FS_EFS_EFS_INODE_H_
  21
  22 #include <fs/efs/efs_subr.h>
  23
  24 /*
  25  * The efs_inode structure represents an in-core inode. It contains meta-data
  26  * corresponding directly to the efs_dinode structure in host byte order and
  27  * with native NetBSD flags and fields, a copy of the on-disk dinode structure,
  28  * as well as other bookkeeping information.
  29  */
  30 struct efs_inode {
  31         struct genfs_node       ei_gnode;
  32         struct lockf           *ei_lockf;       /* advisory lock */
  33         ino_t                   ei_number;      /* inode number */
  34         dev_t                   ei_dev;         /* associated device */
  35         struct vnode           *ei_vp;          /* associated vnode */
  36         LIST_ENTRY(efs_inode)   ei_hash;        /* inode hash chain */
  37
  38         /*
  39          * Host-ordered on-disk fields with native NetBSD types and flags.
  40          */
  41         uint16_t                ei_mode;        /* file type and permissions */
  42         int16_t                 ei_nlink;       /* link count (minimum 2) */
  43         uid_t                   ei_uid;         /* user ID */
  44         gid_t                   ei_gid;         /* group ID */
  45         int32_t                 ei_size;        /* file size (in bytes) */
  46         time_t                  ei_atime;       /* file access time */
  47         time_t                  ei_mtime;       /* file modification time */
  48         time_t                  ei_ctime;       /* inode modification time */
  49         int32_t                 ei_gen;         /* inode generation number */
  50         int16_t                 ei_numextents;  /* number of extents in file */
  51         uint8_t                 ei_version;     /* inode version */
  52
  53         /*
  54          * Copy of the on-disk inode structure, in EFS native format and
  55          * endianness.
  56          */
  57         struct efs_dinode       ei_di;
  58 };
  59
  60 #define EFS_VTOI(vp)    ((struct efs_inode *)(vp)->v_data)
  61 #define EFS_ITOV(eip)   ((struct vnode *)(eip)->ei_vp)
  62
  63 /*
  64  * File handle. The first two fields must match struct fid (see sys/fstypes.h).
  65  */
  66 struct efs_fid {
  67         unsigned short  ef_len;                 /* length of data in bytes */
  68         unsigned short  ef_pad;                 /* compat: historic align */
  69         int32_t         ef_ino;                 /* inode number */
  70         int32_t         ef_gen;                 /* inode generation number */
  71 };
  72
  73 #endif /* !_FS_EFS_EFS_INODE_H_ */