173 lines
6.6 KiB
C
173 lines
6.6 KiB
C
/*
|
|
* 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
|
|
* $Id: inode.h,v 1.14 1997/04/01 08:02:00 bde Exp $
|
|
*/
|
|
|
|
#ifndef _UFS_UFS_INODE_H_
|
|
#define _UFS_UFS_INODE_H_
|
|
|
|
#include <ufs/ufs/dinode.h>
|
|
|
|
/*
|
|
* 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 {
|
|
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. */
|
|
|
|
union { /* Associated filesystem. */
|
|
struct fs *fs; /* FFS */
|
|
struct lfs *lfs; /* LFS */
|
|
struct ext2_sb_info *e2fs; /* EXT2FS */
|
|
} inode_u;
|
|
#define i_fs inode_u.fs
|
|
#define i_lfs inode_u.lfs
|
|
#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. */
|
|
struct lock i_lock; /* Inode lock. */
|
|
/*
|
|
* 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. */
|
|
int i_spare[5]; /* XXX spare storage (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. */
|
|
|
|
#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)
|
|
|
|
/*
|
|
* XXX this is too long to be a macro, and isn't used in any time-critical
|
|
* place; in fact it is only used in ufs_vnops.c so it shouldn't be in a
|
|
* header file.
|
|
*/
|
|
#define ITIMES(ip, t1, t2) { \
|
|
long tv_sec = time.tv_sec; \
|
|
if ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) { \
|
|
(ip)->i_flag |= IN_MODIFIED; \
|
|
if ((ip)->i_flag & IN_ACCESS) \
|
|
(ip)->i_atime \
|
|
= ((t1) == &time ? tv_sec : (t1)->tv_sec); \
|
|
if ((ip)->i_flag & IN_UPDATE) { \
|
|
(ip)->i_mtime \
|
|
= ((t2) == &time ? tv_sec : (t2)->tv_sec); \
|
|
(ip)->i_modrev++; \
|
|
} \
|
|
if ((ip)->i_flag & IN_CHANGE) \
|
|
(ip)->i_ctime = tv_sec; \
|
|
(ip)->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE); \
|
|
} \
|
|
}
|
|
|
|
/* 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_ */
|