| | 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 1.3 2003/08/07 21:17:44 dillon Exp $ |
| | 41 | */ |
| | 42 | |
| | 43 | #ifndef _UFS_UFS_INODE_H_ |
| | 44 | #define _UFS_UFS_INODE_H_ |
| | 45 | |
| | 46 | #include <sys/lock.h> |
| | 47 | #include <sys/queue.h> |
| | 48 | #include "dinode.h" |
| | 49 | |
| | 50 | /* |
| | 51 | * The size of a logical block number. |
| | 52 | */ |
| | 53 | typedef long ufs_lbn_t; |
| | 54 | |
| | 55 | /* |
| | 56 | * This must agree with the definition in <ufs/ufs/dir.h>. |
| | 57 | */ |
| | 58 | #define doff_t int32_t |
| | 59 | |
| | 60 | /* |
| | 61 | * The inode is used to describe each active (or recently active) file in the |
| | 62 | * UFS filesystem. It is composed of two types of information. The first part |
| | 63 | * is the information that is needed only while the file is active (such as |
| | 64 | * the identity of the file and linkage to speed its lookup). The second part |
| | 65 | * is the permanent meta-data associated with the file which is read in |
| | 66 | * from the permanent dinode from long term storage when the file becomes |
| | 67 | * active, and is put back when the file is no longer being used. |
| | 68 | */ |
| | 69 | struct inode { |
| | 70 | struct lock i_lock; /* Inode lock. >Keep this first< */ |
| | 71 | LIST_ENTRY(inode) i_hash;/* Hash chain. */ |
| | 72 | struct vnode *i_vnode;/* Vnode associated with this inode. */ |
| | 73 | struct vnode *i_devvp;/* Vnode for block I/O. */ |
| | 74 | u_int32_t i_flag; /* flags, see below */ |
| | 75 | dev_t i_dev; /* Device associated with the inode. */ |
| | 76 | ino_t i_number; /* The identity of the inode. */ |
| | 77 | int i_effnlink; /* i_nlink when I/O completes */ |
| | 78 | |
| | 79 | union { /* Associated filesystem. */ |
| | 80 | struct fs *fs; /* FFS */ |
| | 81 | struct ext2_sb_info *e2fs; /* EXT2FS */ |
| | 82 | } inode_u; |
| | 83 | #define i_fs inode_u.fs |
| | 84 | #define i_e2fs inode_u.e2fs |
| | 85 | struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */ |
| | 86 | u_quad_t i_modrev; /* Revision level for NFS lease. */ |
| | 87 | struct lockf *i_lockf;/* Head of byte-level lock list. */ |
| | 88 | /* |
| | 89 | * Side effects; used during directory lookup. |
| | 90 | */ |
| | 91 | int32_t i_count; /* Size of free slot in directory. */ |
| | 92 | doff_t i_endoff; /* End of useful stuff in directory. */ |
| | 93 | doff_t i_diroff; /* Offset in dir, where we found last entry. */ |
| | 94 | doff_t i_offset; /* Offset of free space in directory. */ |
| | 95 | ino_t i_ino; /* Inode number of found directory. */ |
| | 96 | u_int32_t i_reclen; /* Size of found directory entry. */ |
| | 97 | u_int32_t i_spare[3]; /* XXX actually non-spare (for ext2fs). */ |
| | 98 | |
| | 99 | struct dirhash *i_dirhash; /* Hashing for large directories */ |
| | 100 | /* |
| | 101 | * The on-disk dinode itself. |
| | 102 | */ |
| | 103 | struct dinode i_din; /* 128 bytes of the on-disk dinode. */ |
| | 104 | }; |
| | 105 | |
| | 106 | #define i_atime i_din.di_atime |
| | 107 | #define i_atimensec i_din.di_atimensec |
| | 108 | #define i_blocks i_din.di_blocks |
| | 109 | #define i_ctime i_din.di_ctime |
| | 110 | #define i_ctimensec i_din.di_ctimensec |
| | 111 | #define i_db i_din.di_db |
| | 112 | #define i_flags i_din.di_flags |
| | 113 | #define i_gen i_din.di_gen |
| | 114 | #define i_gid i_din.di_gid |
| | 115 | #define i_ib i_din.di_ib |
| | 116 | #define i_mode i_din.di_mode |
| | 117 | #define i_mtime i_din.di_mtime |
| | 118 | #define i_mtimensec i_din.di_mtimensec |
| | 119 | #define i_nlink i_din.di_nlink |
| | 120 | #define i_rdev i_din.di_rdev |
| | 121 | #define i_shortlink i_din.di_shortlink |
| | 122 | #define i_size i_din.di_size |
| | 123 | #define i_uid i_din.di_uid |
| | 124 | |
| | 125 | /* These flags are kept in i_flag. */ |
| | 126 | #define IN_ACCESS 0x0001 /* Access time update request. */ |
| | 127 | #define IN_CHANGE 0x0002 /* Inode change time update request. */ |
| | 128 | #define IN_UPDATE 0x0004 /* Modification time update request. */ |
| | 129 | #define IN_MODIFIED 0x0008 /* Inode has been modified. */ |
| | 130 | #define IN_RENAME 0x0010 /* Inode is being renamed. */ |
| | 131 | #define IN_SHLOCK 0x0020 /* File has shared lock. */ |
| | 132 | #define IN_EXLOCK 0x0040 /* File has exclusive lock. */ |
| | 133 | #define IN_HASHED 0x0080 /* Inode is on hash list */ |
| | 134 | #define IN_LAZYMOD 0x0100 /* Modified, but don't write yet. */ |
| | 135 | |
| | 136 | #ifdef _KERNEL |
| | 137 | /* |
| | 138 | * Structure used to pass around logical block paths generated by |
| | 139 | * ufs_getlbns and used by truncate and bmap code. |
| | 140 | */ |
| | 141 | struct indir { |
| | 142 | ufs_daddr_t in_lbn; /* Logical block number. */ |
| | 143 | int in_off; /* Offset in buffer. */ |
| | 144 | int in_exists; /* Flag if the block exists. */ |
| | 145 | }; |
| | 146 | |
| | 147 | /* Convert between inode pointers and vnode pointers. */ |
| | 148 | #define VTOI(vp) ((struct inode *)(vp)->v_data) |
| | 149 | #define ITOV(ip) ((ip)->i_vnode) |
| | 150 | |
| | 151 | /* Determine if soft dependencies are being done */ |
| | 152 | #define DOINGSOFTDEP(vp) ((vp)->v_mount->mnt_flag & MNT_SOFTDEP) |
| | 153 | #define DOINGASYNC(vp) ((vp)->v_mount->mnt_flag & MNT_ASYNC) |
| | 154 | |
| | 155 | /* This overlays the fid structure (see mount.h). */ |
| | 156 | struct ufid { |
| | 157 | u_int16_t ufid_len; /* Length of structure. */ |
| | 158 | u_int16_t ufid_pad; /* Force 32-bit alignment. */ |
| | 159 | ino_t ufid_ino; /* File number (ino). */ |
| | 160 | int32_t ufid_gen; /* Generation number. */ |
| | 161 | }; |
| | 162 | #endif /* _KERNEL */ |
| | 163 | |
| | 164 | #endif /* !_UFS_UFS_INODE_H_ */ |
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