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      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_ */
     92