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/*
* Copyright (c) 1982, 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)inode.h 8.9 (Berkeley) 5/14/95
* $FreeBSD$
*/
#ifndef _UFS_UFS_INODE_H_
#define _UFS_UFS_INODE_H_
#include <sys/lock.h>
#include <sys/queue.h>
#include <ufs/ufs/dinode.h>
/*
* The size of a logical block number.
*/
typedef long ufs_lbn_t;
/*
* This must agree with the definition in <ufs/ufs/dir.h>.
*/
#define doff_t int32_t
/*
* The inode is used to describe each active (or recently active) file in the
* UFS filesystem. It is composed of two types of information. The first part
* is the information that is needed only while the file is active (such as
* the identity of the file and linkage to speed its lookup). The second part
* is the permanent meta-data associated with the file which is read in
* from the permanent dinode from long term storage when the file becomes
* active, and is put back when the file is no longer being used.
*/
struct inode {
struct lock i_lock; /* Inode lock. >Keep this first< */
LIST_ENTRY(inode) i_hash;/* Hash chain. */
struct vnode *i_vnode;/* Vnode associated with this inode. */
struct vnode *i_devvp;/* Vnode for block I/O. */
u_int32_t i_flag; /* flags, see below */
dev_t i_dev; /* Device associated with the inode. */
ino_t i_number; /* The identity of the inode. */
int i_effnlink; /* i_nlink when I/O completes */
union { /* Associated filesystem. */
struct fs *fs; /* FFS */
struct ext2_sb_info *e2fs; /* EXT2FS */
} inode_u;
#define i_fs inode_u.fs
#define i_e2fs inode_u.e2fs
struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */
u_quad_t i_modrev; /* Revision level for NFS lease. */
struct lockf *i_lockf;/* Head of byte-level lock list. */
/*
* Side effects; used during directory lookup.
*/
int32_t i_count; /* Size of free slot in directory. */
doff_t i_endoff; /* End of useful stuff in directory. */
doff_t i_diroff; /* Offset in dir, where we found last entry. */
doff_t i_offset; /* Offset of free space in directory. */
ino_t i_ino; /* Inode number of found directory. */
u_int32_t i_reclen; /* Size of found directory entry. */
u_int32_t i_spare[4]; /* XXX actually non-spare (for ext2fs). */
/*
* The on-disk dinode itself.
*/
struct dinode i_din; /* 128 bytes of the on-disk dinode. */
};
#define i_atime i_din.di_atime
#define i_atimensec i_din.di_atimensec
#define i_blocks i_din.di_blocks
#define i_ctime i_din.di_ctime
#define i_ctimensec i_din.di_ctimensec
#define i_db i_din.di_db
#define i_flags i_din.di_flags
#define i_gen i_din.di_gen
#define i_gid i_din.di_gid
#define i_ib i_din.di_ib
#define i_mode i_din.di_mode
#define i_mtime i_din.di_mtime
#define i_mtimensec i_din.di_mtimensec
#define i_nlink i_din.di_nlink
#define i_rdev i_din.di_rdev
#define i_shortlink i_din.di_shortlink
#define i_size i_din.di_size
#define i_uid i_din.di_uid
/* These flags are kept in i_flag. */
#define IN_ACCESS 0x0001 /* Access time update request. */
#define IN_CHANGE 0x0002 /* Inode change time update request. */
#define IN_UPDATE 0x0004 /* Modification time update request. */
#define IN_MODIFIED 0x0008 /* Inode has been modified. */
#define IN_RENAME 0x0010 /* Inode is being renamed. */
#define IN_SHLOCK 0x0020 /* File has shared lock. */
#define IN_EXLOCK 0x0040 /* File has exclusive lock. */
#define IN_HASHED 0x0080 /* Inode is on hash list */
#define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */
#ifdef _KERNEL
/*
* Structure used to pass around logical block paths generated by
* ufs_getlbns and used by truncate and bmap code.
*/
struct indir {
ufs_daddr_t in_lbn; /* Logical block number. */
int in_off; /* Offset in buffer. */
int in_exists; /* Flag if the block exists. */
};
/* Convert between inode pointers and vnode pointers. */
#define VTOI(vp) ((struct inode *)(vp)->v_data)
#define ITOV(ip) ((ip)->i_vnode)
/* Determine if soft dependencies are being done */
#define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP)
#define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC)
/* This overlays the fid structure (see mount.h). */
struct ufid {
u_int16_t ufid_len; /* Length of structure. */
u_int16_t ufid_pad; /* Force 32-bit alignment. */
ino_t ufid_ino; /* File number (ino). */
int32_t ufid_gen; /* Generation number. */
};
#endif /* _KERNEL */
#endif /* !_UFS_UFS_INODE_H_ */
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