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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)inode.h 8.9 (Berkeley) 5/14/95 39 * $FreeBSD: src/sys/ufs/ufs/inode.h,v 1.28.2.2 2001/09/29 12:52:52 iedowse Exp $ 40 * $DragonFly: src/sys/vfs/ufs/inode.h,v 1.8 2004/08/28 19:02:30 dillon Exp $ 41 */ 42 43 #ifndef _UFS_UFS_INODE_H_ 44 #define _UFS_UFS_INODE_H_ 45 46 #ifndef _SYS_LOCK_H_ 47 #include <sys/lock.h> 48 #endif 49 #ifndef _SYS_LOCKF_H 50 #include <sys/lockf.h> 51 #endif 52 #ifndef _SYS_QUEUE_H_ 53 #include <sys/queue.h> 54 #endif 55 #include "dinode.h" 56 57 /* 58 * The size of a logical block number. 59 */ 60 typedef long ufs_lbn_t; 61 62 /* 63 * This must agree with the definition in <ufs/ufs/dir.h>. 64 */ 65 #define doff_t int32_t 66 67 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 68 69 /* 70 * The inode is used to describe each active (or recently active) file in the 71 * UFS filesystem. It is composed of two types of information. The first part 72 * is the information that is needed only while the file is active (such as 73 * the identity of the file and linkage to speed its lookup). The second part 74 * is the permanent meta-data associated with the file which is read in 75 * from the permanent dinode from long term storage when the file becomes 76 * active, and is put back when the file is no longer being used. 77 */ 78 struct inode { 79 struct inode *i_next;/* Hash chain */ 80 struct vnode *i_vnode;/* Vnode associated with this inode. */ 81 struct vnode *i_devvp;/* Vnode for block I/O. */ 82 uint32_t i_flag; /* flags, see below */ 83 dev_t i_dev; /* Device associated with the inode. */ 84 ino_t i_number; /* The identity of the inode. */ 85 int i_effnlink; /* i_nlink when I/O completes */ 86 87 union { /* Associated filesystem. */ 88 struct fs *fs; /* FFS */ 89 struct ext2_sb_info *e2fs; /* EXT2FS */ 90 } inode_u; 91 #define i_fs inode_u.fs 92 #define i_e2fs inode_u.e2fs 93 struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */ 94 u_quad_t i_modrev; /* Revision level for NFS lease. */ 95 struct lockf i_lockf;/* Head of byte-level lock list. */ 96 /* 97 * Side effects; used during directory lookup. 98 */ 99 int32_t i_count; /* Size of free slot in directory. */ 100 doff_t i_endoff; /* End of useful stuff in directory. */ 101 doff_t i_diroff; /* Offset in dir, where we found last entry. */ 102 doff_t i_offset; /* Offset of free space in directory. */ 103 ino_t i_ino; /* Inode number of found directory. */ 104 uint32_t i_reclen; /* Size of found directory entry. */ 105 uint32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */ 106 107 struct dirhash *i_dirhash; /* Hashing for large directories */ 108 /* 109 * The on-disk dinode itself. 110 */ 111 struct dinode i_din; /* 128 bytes of the on-disk dinode. */ 112 }; 113 114 #define i_atime i_din.di_atime 115 #define i_atimensec i_din.di_atimensec 116 #define i_blocks i_din.di_blocks 117 #define i_ctime i_din.di_ctime 118 #define i_ctimensec i_din.di_ctimensec 119 #define i_db i_din.di_db 120 #define i_flags i_din.di_flags 121 #define i_gen i_din.di_gen 122 #define i_gid i_din.di_gid 123 #define i_ib i_din.di_ib 124 #define i_mode i_din.di_mode 125 #define i_mtime i_din.di_mtime 126 #define i_mtimensec i_din.di_mtimensec 127 #define i_nlink i_din.di_nlink 128 #define i_rdev i_din.di_rdev 129 #define i_shortlink i_din.di_shortlink 130 #define i_size i_din.di_size 131 #define i_uid i_din.di_uid 132 133 #endif 134 135 /* These flags are kept in i_flag. */ 136 #define IN_ACCESS 0x0001 /* Access time update request. */ 137 #define IN_CHANGE 0x0002 /* Inode change time update request. */ 138 #define IN_UPDATE 0x0004 /* Modification time update request. */ 139 #define IN_MODIFIED 0x0008 /* Inode has been modified. */ 140 #define IN_RENAME 0x0010 /* Inode is being renamed. */ 141 #define IN_SHLOCK 0x0020 /* File has shared lock. */ 142 #define IN_EXLOCK 0x0040 /* File has exclusive lock. */ 143 #define IN_HASHED 0x0080 /* Inode is on hash list */ 144 #define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */ 145 146 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 147 148 /* 149 * Structure used to pass around logical block paths generated by 150 * ufs_getlbns and used by truncate and bmap code. 151 */ 152 struct indir { 153 ufs_daddr_t in_lbn; /* Logical block number. */ 154 int in_off; /* Offset in buffer. */ 155 int in_exists; /* Flag if the block exists. */ 156 }; 157 158 /* Convert between inode pointers and vnode pointers. */ 159 #define VTOI(vp) ((struct inode *)(vp)->v_data) 160 #define ITOV(ip) ((ip)->i_vnode) 161 162 /* Determine if soft dependencies are being done */ 163 #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP) 164 #define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC) 165 166 /* This overlays the fid structure (see mount.h). */ 167 struct ufid { 168 uint16_t ufid_len; /* Length of structure. */ 169 uint16_t ufid_pad; /* Force 32-bit alignment. */ 170 ino_t ufid_ino; /* File number (ino). */ 171 int32_t ufid_gen; /* Generation number. */ 172 }; 173 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 174 175 #endif /* !_UFS_UFS_INODE_H_ */ 176