inode.h revision 30418
1285809Sscottl/* 2285809Sscottl * Copyright (c) 1982, 1989, 1993 3285809Sscottl * The Regents of the University of California. All rights reserved. 4285809Sscottl * (c) UNIX System Laboratories, Inc. 5285809Sscottl * All or some portions of this file are derived from material licensed 6285809Sscottl * to the University of California by American Telephone and Telegraph 7285809Sscottl * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8285809Sscottl * the permission of UNIX System Laboratories, Inc. 9285809Sscottl * 10285809Sscottl * Redistribution and use in source and binary forms, with or without 11285809Sscottl * modification, are permitted provided that the following conditions 12285809Sscottl * are met: 13285809Sscottl * 1. Redistributions of source code must retain the above copyright 14285809Sscottl * notice, this list of conditions and the following disclaimer. 15285809Sscottl * 2. Redistributions in binary form must reproduce the above copyright 16285809Sscottl * notice, this list of conditions and the following disclaimer in the 17285809Sscottl * documentation and/or other materials provided with the distribution. 18285809Sscottl * 3. All advertising materials mentioning features or use of this software 19285809Sscottl * must display the following acknowledgement: 20285809Sscottl * This product includes software developed by the University of 21285809Sscottl * California, Berkeley and its contributors. 22285809Sscottl * 4. Neither the name of the University nor the names of its contributors 23285809Sscottl * may be used to endorse or promote products derived from this software 24285809Sscottl * without specific prior written permission. 25285809Sscottl * 26285809Sscottl * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27285809Sscottl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28285809Sscottl * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29285809Sscottl * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30285809Sscottl * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31285809Sscottl * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32285809Sscottl * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33285809Sscottl * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34285809Sscottl * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35285809Sscottl * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36285809Sscottl * SUCH DAMAGE. 37285809Sscottl * 38285809Sscottl * @(#)inode.h 8.9 (Berkeley) 5/14/95 39285809Sscottl * $Id: inode.h,v 1.16 1997/07/13 15:40:31 bde Exp $ 40285809Sscottl */ 41285809Sscottl 42285809Sscottl#ifndef _UFS_UFS_INODE_H_ 43285809Sscottl#define _UFS_UFS_INODE_H_ 44285809Sscottl 45285809Sscottl#include <ufs/ufs/dinode.h> 46285809Sscottl 47285809Sscottl/* 48285809Sscottl * This must agree with the definition in <ufs/ufs/dir.h>. 49285809Sscottl */ 50285809Sscottl#define doff_t int32_t 51285809Sscottl 52285809Sscottl/* 53285809Sscottl * The inode is used to describe each active (or recently active) file in the 54285809Sscottl * UFS filesystem. It is composed of two types of information. The first part 55285809Sscottl * is the information that is needed only while the file is active (such as 56285809Sscottl * the identity of the file and linkage to speed its lookup). The second part 57285809Sscottl * is the permanent meta-data associated with the file which is read in 58285809Sscottl * from the permanent dinode from long term storage when the file becomes 59285809Sscottl * active, and is put back when the file is no longer being used. 60285809Sscottl */ 61285809Sscottlstruct inode { 62285809Sscottl LIST_ENTRY(inode) i_hash;/* Hash chain. */ 63285809Sscottl struct vnode *i_vnode;/* Vnode associated with this inode. */ 64285809Sscottl struct vnode *i_devvp;/* Vnode for block I/O. */ 65285809Sscottl u_int32_t i_flag; /* flags, see below */ 66285809Sscottl dev_t i_dev; /* Device associated with the inode. */ 67285809Sscottl ino_t i_number; /* The identity of the inode. */ 68285809Sscottl 69285809Sscottl union { /* Associated filesystem. */ 70285809Sscottl struct fs *fs; /* FFS */ 71285809Sscottl struct lfs *lfs; /* LFS */ 72285809Sscottl struct ext2_sb_info *e2fs; /* EXT2FS */ 73285809Sscottl } inode_u; 74285809Sscottl#define i_fs inode_u.fs 75285809Sscottl#define i_lfs inode_u.lfs 76285809Sscottl#define i_e2fs inode_u.e2fs 77285809Sscottl struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */ 78285809Sscottl u_quad_t i_modrev; /* Revision level for NFS lease. */ 79285809Sscottl struct lockf *i_lockf;/* Head of byte-level lock list. */ 80285809Sscottl struct lock i_lock; /* Inode lock. */ 81285809Sscottl /* 82285809Sscottl * Side effects; used during directory lookup. 83285809Sscottl */ 84285809Sscottl int32_t i_count; /* Size of free slot in directory. */ 85285809Sscottl doff_t i_endoff; /* End of useful stuff in directory. */ 86285809Sscottl doff_t i_diroff; /* Offset in dir, where we found last entry. */ 87285809Sscottl doff_t i_offset; /* Offset of free space in directory. */ 88285809Sscottl ino_t i_ino; /* Inode number of found directory. */ 89285809Sscottl u_int32_t i_reclen; /* Size of found directory entry. */ 90285809Sscottl int i_spare[5]; /* XXX actually non-spare (for ext2fs). */ 91285809Sscottl /* 92285809Sscottl * The on-disk dinode itself. 93285809Sscottl */ 94285809Sscottl struct dinode i_din; /* 128 bytes of the on-disk dinode. */ 95285809Sscottl}; 96285809Sscottl 97285809Sscottl#define i_atime i_din.di_atime 98285809Sscottl#define i_atimensec i_din.di_atimensec 99285809Sscottl#define i_blocks i_din.di_blocks 100285809Sscottl#define i_ctime i_din.di_ctime 101285809Sscottl#define i_ctimensec i_din.di_ctimensec 102285809Sscottl#define i_db i_din.di_db 103285809Sscottl#define i_flags i_din.di_flags 104285809Sscottl#define i_gen i_din.di_gen 105285809Sscottl#define i_gid i_din.di_gid 106285809Sscottl#define i_ib i_din.di_ib 107285809Sscottl#define i_mode i_din.di_mode 108285809Sscottl#define i_mtime i_din.di_mtime 109285809Sscottl#define i_mtimensec i_din.di_mtimensec 110285809Sscottl#define i_nlink i_din.di_nlink 111285809Sscottl#define i_rdev i_din.di_rdev 112285809Sscottl#define i_shortlink i_din.di_shortlink 113285809Sscottl#define i_size i_din.di_size 114285809Sscottl#define i_uid i_din.di_uid 115285809Sscottl 116285809Sscottl/* These flags are kept in i_flag. */ 117285809Sscottl#define IN_ACCESS 0x0001 /* Access time update request. */ 118285809Sscottl#define IN_CHANGE 0x0002 /* Inode change time update request. */ 119285809Sscottl#define IN_UPDATE 0x0004 /* Modification time update request. */ 120285809Sscottl#define IN_MODIFIED 0x0008 /* Inode has been modified. */ 121285809Sscottl#define IN_RENAME 0x0010 /* Inode is being renamed. */ 122285809Sscottl#define IN_SHLOCK 0x0020 /* File has shared lock. */ 123285809Sscottl#define IN_EXLOCK 0x0040 /* File has exclusive lock. */ 124285809Sscottl#define IN_HASHED 0x0080 /* Inode is on hash list */ 125285809Sscottl 126285809Sscottl#ifdef KERNEL 127285809Sscottl/* 128285809Sscottl * Structure used to pass around logical block paths generated by 129285809Sscottl * ufs_getlbns and used by truncate and bmap code. 130285809Sscottl */ 131285809Sscottlstruct indir { 132285809Sscottl ufs_daddr_t in_lbn; /* Logical block number. */ 133285809Sscottl int in_off; /* Offset in buffer. */ 134285809Sscottl int in_exists; /* Flag if the block exists. */ 135285809Sscottl}; 136285809Sscottl 137285809Sscottl/* Convert between inode pointers and vnode pointers. */ 138285809Sscottl#define VTOI(vp) ((struct inode *)(vp)->v_data) 139285809Sscottl#define ITOV(ip) ((ip)->i_vnode) 140285809Sscottl 141285809Sscottl/* 142285809Sscottl * XXX this is too long to be a macro, and isn't used in any time-critical 143285809Sscottl * place; in fact it is only used in ufs_vnops.c so it shouldn't be in a 144285809Sscottl * header file. 145285809Sscottl */ 146285809Sscottl#define ITIMES(ip, t1, t2) { \ 147285809Sscottl long tv_sec = time.tv_sec; \ 148285809Sscottl if ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) { \ 149285809Sscottl (ip)->i_flag |= IN_MODIFIED; \ 150285809Sscottl if ((ip)->i_flag & IN_ACCESS) \ 151285809Sscottl (ip)->i_atime \ 152285809Sscottl = ((t1) == &time ? tv_sec : (t1)->tv_sec); \ 153285809Sscottl if ((ip)->i_flag & IN_UPDATE) { \ 154285809Sscottl (ip)->i_mtime \ 155285809Sscottl = ((t2) == &time ? tv_sec : (t2)->tv_sec); \ 156285809Sscottl (ip)->i_modrev++; \ 157285809Sscottl } \ 158285809Sscottl if ((ip)->i_flag & IN_CHANGE) \ 159285809Sscottl (ip)->i_ctime = tv_sec; \ 160285809Sscottl (ip)->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE); \ 161285809Sscottl } \ 162285809Sscottl} 163285809Sscottl 164285809Sscottl/* This overlays the fid structure (see mount.h). */ 165285809Sscottlstruct ufid { 166285809Sscottl u_int16_t ufid_len; /* Length of structure. */ 167285809Sscottl u_int16_t ufid_pad; /* Force 32-bit alignment. */ 168285809Sscottl ino_t ufid_ino; /* File number (ino). */ 169285809Sscottl int32_t ufid_gen; /* Generation number. */ 170285809Sscottl}; 171285809Sscottl#endif /* KERNEL */ 172285809Sscottl 173285809Sscottl#endif /* !_UFS_UFS_INODE_H_ */ 174285809Sscottl