sys/fs/v7fs/v7fs_inode.h

   1 /*      $NetBSD: v7fs_inode.h,v 1.1 2011/06/27 11:52:25 uch Exp $       */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _V7FS_INODE_H_
  33 #define _V7FS_INODE_H_
  34
  35 /* Software implementation of inode. (memory image) */
  36 struct v7fs_inode {
  37         v7fs_ino_t inode_number;        /* inode location */
  38         /* attr */
  39         uint16_t mode;
  40         int16_t nlink;
  41         int16_t uid;
  42         int16_t gid;
  43         v7fs_time_t atime;
  44         v7fs_time_t mtime;
  45         v7fs_time_t ctime;
  46         /* open mode */
  47         bool append_mode;
  48
  49         v7fs_dev_t device;      /* for special file.(cdev, bdev) */
  50         /* payload. */
  51         v7fs_off_t filesize;    /* size of file (byte) */
  52         v7fs_daddr_t addr[V7FS_NADDR];  /* data block address list */
  53 };
  54
  55 #define v7fs_inode_filesize(i)  ((i)->filesize)
  56 #define v7fs_inode_allocated(i) ((i)->mode)
  57 #define v7fs_inode_nlink(i)     ((i)->nlink)
  58 /* V7 original */
  59 #define v7fs_inode_isdir(i)     (((i)->mode & V7FS_IFMT) == V7FS_IFDIR)
  60 #define v7fs_inode_isfile(i)    (((i)->mode & V7FS_IFMT) == V7FS_IFREG)
  61 #define v7fs_inode_iscdev(i)    (((i)->mode & V7FS_IFMT) == V7FS_IFCHR)
  62 #define v7fs_inode_isbdev(i)    (((i)->mode & V7FS_IFMT) == V7FS_IFBLK)
  63 /* 2BSD extension (implementation is different) */
  64 #define v7fs_inode_islnk(i)     (((i)->mode & V7FS_IFMT) == V7FSBSD_IFLNK)
  65 #define v7fs_inode_issock(i)    (((i)->mode & V7FS_IFMT) == V7FSBSD_IFSOCK)
  66 /* NetBSD Extension */
  67 #define v7fs_inode_isfifo(i)    (((i)->mode & V7FS_IFMT) == V7FSBSD_IFFIFO)
  68
  69 __BEGIN_DECLS
  70 /* Free inode access ops. */
  71 int v7fs_inode_allocate(struct v7fs_self *, v7fs_ino_t *);
  72 void v7fs_inode_deallocate(struct v7fs_self *, v7fs_ino_t);
  73
  74 /* Disk I/O ops. */
  75 int v7fs_inode_load(struct v7fs_self *, struct v7fs_inode *, v7fs_ino_t);
  76 int v7fs_inode_writeback(struct v7fs_self *, struct v7fs_inode *);
  77 void v7fs_inode_setup_memory_image(const struct v7fs_self *,
  78     struct v7fs_inode *, struct v7fs_inode_diskimage *);
  79
  80 /* Check. */
  81 int v7fs_inode_number_sanity(const struct v7fs_superblock *, v7fs_ino_t);
  82
  83 /* Util. */
  84 void v7fs_inode_chmod(struct v7fs_inode *, v7fs_mode_t);
  85 void v7fs_inode_dump(const struct v7fs_inode *);
  86
  87 /* Loop over all inode in ilist. */
  88 int v7fs_ilist_foreach(struct v7fs_self *, int (*)(struct v7fs_self *, void *,
  89         struct v7fs_inode *, v7fs_ino_t), void *);
  90 __END_DECLS
  91 #endif /*!_V7FS_INODE_H_ */