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 * 4. 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 * $FreeBSD$ 36 */ 37 38 #ifndef _FS_EXT2FS_INODE_H_ 39 #define _FS_EXT2FS_INODE_H_ 40 41 #include <sys/param.h> 42 #include <sys/lock.h> 43 #include <sys/mutex.h> 44 #include <sys/queue.h> 45 46 #include <fs/ext2fs/ext2_extents.h> 47 48 /* 49 * This must agree with the definition in <ufs/ufs/dir.h>. 50 */ 51 #define doff_t int32_t 52 53 #define NDADDR 12 /* Direct addresses in inode. */ 54 #define NIADDR 3 /* Indirect addresses in inode. */ 55 56 /* 57 * The size of physical and logical block numbers in EXT2FS. 58 */ 59 typedef uint32_t e2fs_daddr_t; 60 typedef int64_t e2fs_lbn_t; 61 typedef int64_t e4fs_daddr_t; 62 63 /* 64 * The inode is used to describe each active (or recently active) file in the 65 * EXT2FS filesystem. It is composed of two types of information. The first 66 * part is the information that is needed only while the file is active (such 67 * as the identity of the file and linkage to speed its lookup). The second 68 * part is the permanent meta-data associated with the file which is read in 69 * from the permanent dinode from long term storage when the file becomes 70 * active, and is put back when the file is no longer being used. 71 */ 72 struct inode { 73 struct vnode *i_vnode;/* Vnode associated with this inode. */ 74 struct ext2mount *i_ump; 75 uint32_t i_flag; /* flags, see below */ 76 ino_t i_number; /* The identity of the inode. */ 77 78 struct m_ext2fs *i_e2fs; /* EXT2FS */ 79 u_quad_t i_modrev; /* Revision level for NFS lease. */ 80 /* 81 * Side effects; used during directory lookup. 82 */ 83 int32_t i_count; /* Size of free slot in directory. */ 84 doff_t i_endoff; /* End of useful stuff in directory. */ 85 doff_t i_diroff; /* Offset in dir, where we found last entry. */ 86 doff_t i_offset; /* Offset of free space in directory. */ 87 88 uint32_t i_block_group; 89 uint32_t i_next_alloc_block; 90 uint32_t i_next_alloc_goal; 91 92 /* Fields from struct dinode in UFS. */ 93 uint16_t i_mode; /* IFMT, permissions; see below. */ 94 int16_t i_nlink; /* File link count. */ 95 uint32_t i_uid; /* File owner. */ 96 uint32_t i_gid; /* File group. */ 97 uint64_t i_size; /* File byte count. */ 98 uint64_t i_blocks; /* Blocks actually held. */ 99 int32_t i_atime; /* Last access time. */ 100 int32_t i_mtime; /* Last modified time. */ 101 int32_t i_ctime; /* Last inode change time. */ 102 int32_t i_birthtime; /* Inode creation time. */ 103 int32_t i_mtimensec; /* Last modified time. */ 104 int32_t i_atimensec; /* Last access time. */ 105 int32_t i_ctimensec; /* Last inode change time. */ 106 int32_t i_birthnsec; /* Inode creation time. */ 107 uint32_t i_gen; /* Generation number. */ 108 uint32_t i_flags; /* Status flags (chflags). */ 109 uint32_t i_db[NDADDR]; /* Direct disk blocks. */ 110 uint32_t i_ib[NIADDR]; /* Indirect disk blocks. */ 111 112 struct ext4_extent_cache i_ext_cache; /* cache for ext4 extent */ 113 }; 114 115 /* 116 * The di_db fields may be overlaid with other information for 117 * file types that do not have associated disk storage. Block 118 * and character devices overlay the first data block with their 119 * dev_t value. Short symbolic links place their path in the 120 * di_db area. 121 */ 122 #define i_shortlink i_db 123 #define i_rdev i_db[0] 124 125 /* File permissions. */ 126 #define IEXEC 0000100 /* Executable. */ 127 #define IWRITE 0000200 /* Writeable. */ 128 #define IREAD 0000400 /* Readable. */ 129 #define ISVTX 0001000 /* Sticky bit. */ 130 #define ISGID 0002000 /* Set-gid. */ 131 #define ISUID 0004000 /* Set-uid. */ 132 133 /* File types. */ 134 #define IFMT 0170000 /* Mask of file type. */ 135 #define IFIFO 0010000 /* Named pipe (fifo). */ 136 #define IFCHR 0020000 /* Character device. */ 137 #define IFDIR 0040000 /* Directory file. */ 138 #define IFBLK 0060000 /* Block device. */ 139 #define IFREG 0100000 /* Regular file. */ 140 #define IFLNK 0120000 /* Symbolic link. */ 141 #define IFSOCK 0140000 /* UNIX domain socket. */ 142 #define IFWHT 0160000 /* Whiteout. */ 143 144 /* These flags are kept in i_flag. */ 145 #define IN_ACCESS 0x0001 /* Access time update request. */ 146 #define IN_CHANGE 0x0002 /* Inode change time update request. */ 147 #define IN_UPDATE 0x0004 /* Modification time update request. */ 148 #define IN_MODIFIED 0x0008 /* Inode has been modified. */ 149 #define IN_RENAME 0x0010 /* Inode is being renamed. */ 150 #define IN_HASHED 0x0020 /* Inode is on hash list */ 151 #define IN_LAZYMOD 0x0040 /* Modified, but don't write yet. */ 152 #define IN_SPACECOUNTED 0x0080 /* Blocks to be freed in free count. */ 153 #define IN_LAZYACCESS 0x0100 /* Process IN_ACCESS after the 154 suspension finished */ 155 156 /* 157 * These are translation flags for some attributes that Ext4 158 * passes as inode flags but that we cannot pass directly. 159 */ 160 #define IN_E4INDEX 0x010000 161 #define IN_E4EXTENTS 0x020000 162 163 #define i_devvp i_ump->um_devvp 164 165 #ifdef _KERNEL 166 /* 167 * Structure used to pass around logical block paths generated by 168 * ext2_getlbns and used by truncate and bmap code. 169 */ 170 struct indir { 171 e2fs_lbn_t in_lbn; /* Logical block number. */ 172 int in_off; /* Offset in buffer. */ 173 }; 174 175 /* Convert between inode pointers and vnode pointers. */ 176 #define VTOI(vp) ((struct inode *)(vp)->v_data) 177 #define ITOV(ip) ((ip)->i_vnode) 178 179 /* This overlays the fid structure (see mount.h). */ 180 struct ufid { 181 uint16_t ufid_len; /* Length of structure. */ 182 uint16_t ufid_pad; /* Force 32-bit alignment. */ 183 ino_t ufid_ino; /* File number (ino). */ 184 uint32_t ufid_gen; /* Generation number. */ 185 }; 186 #endif /* _KERNEL */ 187 188 #endif /* !_FS_EXT2FS_INODE_H_ */ 189