1 /*- 2 * Copyright (c) 1982, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 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 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)inode.h 8.9 (Berkeley) 5/14/95 35 * $FreeBSD: src/sys/ufs/ufs/inode.h,v 1.28.2.2 2001/09/29 12:52:52 iedowse Exp $ 36 * $DragonFly: src/sys/vfs/ufs/inode.h,v 1.12 2006/09/10 01:26:41 dillon Exp $ 37 */ 38 39 #ifndef _UFS_UFS_INODE_H_ 40 #define _UFS_UFS_INODE_H_ 41 42 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 43 44 #ifndef _SYS_LOCK_H_ 45 #include <sys/lock.h> 46 #endif 47 #ifndef _SYS_LOCKF_H 48 #include <sys/lockf.h> 49 #endif 50 51 #endif 52 53 #ifndef _SYS_QUEUE_H_ 54 #include <sys/queue.h> 55 #endif 56 #include "dinode.h" 57 58 /* 59 * The size of a logical block number. 60 */ 61 typedef long ufs_lbn_t; 62 63 /* 64 * This must agree with the definition in <ufs/ufs/dir.h>. 65 */ 66 #define doff_t int32_t 67 68 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 69 70 /* 71 * The inode is used to describe each active (or recently active) file in the 72 * UFS filesystem. It is composed of two types of information. The first part 73 * is the information that is needed only while the file is active (such as 74 * the identity of the file and linkage to speed its lookup). The second part 75 * is the permanent meta-data associated with the file which is read in 76 * from the permanent dinode from long term storage when the file becomes 77 * active, and is put back when the file is no longer being used. 78 */ 79 struct inode { 80 struct inode *i_next;/* Hash chain */ 81 struct vnode *i_vnode;/* Vnode associated with this inode. */ 82 struct vnode *i_devvp;/* Vnode for block I/O. */ 83 uint32_t i_flag; /* flags, see below */ 84 cdev_t i_dev; /* Device associated with the inode. */ 85 ino_t i_number; /* The identity of the inode. */ 86 int i_effnlink; /* i_nlink when I/O completes */ 87 struct fs *i_fs; /* Associated filesystem */ 88 struct ufs_dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */ 89 u_quad_t i_modrev; /* Revision level for NFS lease. */ 90 struct lockf i_lockf;/* Head of byte-level lock list. */ 91 /* 92 * Side effects; used during directory lookup. 93 */ 94 int32_t i_count; /* Size of free slot in directory. */ 95 doff_t i_endoff; /* End of useful stuff in directory. */ 96 doff_t i_diroff; /* Offset in dir, where we found last entry. */ 97 doff_t i_offset; /* Offset of free space in directory. */ 98 ino_t i_ino; /* Inode number of found directory. */ 99 uint32_t i_reclen; /* Size of found directory entry. */ 100 uint32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */ 101 102 struct dirhash *i_dirhash; /* Hashing for large directories */ 103 /* 104 * The on-disk dinode itself (128 bytes) 105 */ 106 struct ufs1_dinode i_din; 107 }; 108 109 #define i_atime i_din.di_atime 110 #define i_atimensec i_din.di_atimensec 111 #define i_blocks i_din.di_blocks 112 #define i_ctime i_din.di_ctime 113 #define i_ctimensec i_din.di_ctimensec 114 #define i_db i_din.di_db 115 #define i_flags i_din.di_flags 116 #define i_gen i_din.di_gen 117 #define i_gid i_din.di_gid 118 #define i_ib i_din.di_ib 119 #define i_mode i_din.di_mode 120 #define i_mtime i_din.di_mtime 121 #define i_mtimensec i_din.di_mtimensec 122 #define i_nlink i_din.di_nlink 123 #define i_rdev i_din.di_rdev 124 #define i_shortlink i_din.di_shortlink 125 #define i_size i_din.di_size 126 #define i_uid i_din.di_uid 127 128 #endif 129 130 /* These flags are kept in i_flag. */ 131 #define IN_ACCESS 0x0001 /* Access time update request. */ 132 #define IN_CHANGE 0x0002 /* Inode change time update request. */ 133 #define IN_UPDATE 0x0004 /* Modification time update request. */ 134 #define IN_MODIFIED 0x0008 /* Inode has been modified. */ 135 #define IN_RENAME 0x0010 /* Inode is being renamed. */ 136 #define IN_SHLOCK 0x0020 /* File has shared lock. */ 137 #define IN_EXLOCK 0x0040 /* File has exclusive lock. */ 138 #define IN_HASHED 0x0080 /* Inode is on hash list */ 139 #define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */ 140 141 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 142 143 /* 144 * Structure used to pass around logical block paths generated by 145 * ufs_getlbns and used by truncate and bmap code. 146 */ 147 struct indir { 148 ufs_daddr_t in_lbn; /* Logical block number. */ 149 int in_off; /* Offset in buffer. */ 150 int in_exists; /* Flag if the block exists. */ 151 }; 152 153 /* Convert between inode pointers and vnode pointers. */ 154 #define VTOI(vp) ((struct inode *)(vp)->v_data) 155 #define ITOV(ip) ((ip)->i_vnode) 156 157 /* Determine if soft dependencies are being done */ 158 #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP) 159 #define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC) 160 161 /* This overlays the fid structure (see mount.h). */ 162 struct ufid { 163 uint16_t ufid_len; /* Length of structure. */ 164 uint16_t ufid_pad; /* Force 32-bit alignment. */ 165 ino_t ufid_ino; /* File number (ino). */ 166 int32_t ufid_gen; /* Generation number. */ 167 }; 168 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 169 170 #endif /* !_UFS_UFS_INODE_H_ */ 171