1 /* $NetBSD: inode.h,v 1.71 2014/05/26 19:16:39 dholland Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)inode.h 8.9 (Berkeley) 5/14/95 37 */ 38 39 #ifndef _UFS_UFS_INODE_H_ 40 #define _UFS_UFS_INODE_H_ 41 42 #include <sys/vnode.h> 43 #include <ufs/ufs/dinode.h> 44 #include <ufs/ufs/dir.h> 45 #include <ufs/ufs/quota.h> 46 #include <ufs/ext2fs/ext2fs_dinode.h> 47 #include <miscfs/genfs/genfs_node.h> 48 49 /* 50 * Lookup result state (other than the result inode). This is 51 * currently stashed in the vnode between VOP_LOOKUP and directory 52 * operation VOPs, which is gross. 53 * 54 * XXX ulr_diroff is a lookup hint from the previos call of VOP_LOOKUP. 55 * probably it should not be here. 56 */ 57 struct ufs_lookup_results { 58 int32_t ulr_count; /* Size of free slot in directory. */ 59 doff_t ulr_endoff; /* End of useful stuff in directory. */ 60 doff_t ulr_diroff; /* Offset in dir, where we found last entry. */ 61 doff_t ulr_offset; /* Offset of free space in directory. */ 62 u_int32_t ulr_reclen; /* Size of found directory entry. */ 63 }; 64 65 /* notyet XXX */ 66 #define UFS_CHECK_CRAPCOUNTER(dp) ((void)(dp)->i_crapcounter) 67 68 /* 69 * Per-filesystem inode extensions. 70 */ 71 struct ffs_inode_ext { 72 daddr_t *ffs_snapblklist; /* Collect expunged snapshot blocks. */ 73 /* follow two fields are used by contiguous allocation code only. */ 74 daddr_t ffs_first_data_blk; /* first data block on disk. */ 75 daddr_t ffs_first_indir_blk; /* first indirect block on disk. */ 76 }; 77 78 struct ext2fs_inode_ext { 79 daddr_t ext2fs_last_lblk; /* last logical block allocated */ 80 daddr_t ext2fs_last_blk; /* last block allocated on disk */ 81 }; 82 83 struct lfs_inode_ext; 84 85 /* 86 * The inode is used to describe each active (or recently active) file in the 87 * UFS filesystem. It is composed of two types of information. The first part 88 * is the information that is needed only while the file is active (such as 89 * the identity of the file and linkage to speed its lookup). The second part 90 * is the permanent meta-data associated with the file which is read in 91 * from the permanent dinode from long term storage when the file becomes 92 * active, and is put back when the file is no longer being used. 93 */ 94 struct inode { 95 struct genfs_node i_gnode; 96 TAILQ_ENTRY(inode) i_nextsnap; /* snapshot file list. */ 97 struct vnode *i_vnode; /* Vnode associated with this inode. */ 98 struct ufsmount *i_ump; /* Mount point associated with this inode. */ 99 struct vnode *i_devvp; /* Vnode for block I/O. */ 100 u_int32_t i_flag; /* flags, see below */ 101 dev_t i_dev; /* Device associated with the inode. */ 102 ino_t i_number; /* The identity of the inode. */ 103 104 union { /* Associated filesystem. */ 105 struct fs *fs; /* FFS */ 106 struct lfs *lfs; /* LFS */ 107 struct m_ext2fs *e2fs; /* EXT2FS */ 108 } inode_u; 109 #define i_fs inode_u.fs 110 #define i_lfs inode_u.lfs 111 #define i_e2fs inode_u.e2fs 112 113 void *i_unused1; /* Unused. */ 114 struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */ 115 u_quad_t i_modrev; /* Revision level for NFS lease. */ 116 struct lockf *i_lockf;/* Head of byte-level lock list. */ 117 118 /* 119 * Side effects; used during (and after) directory lookup. 120 * XXX should not be here. 121 */ 122 struct ufs_lookup_results i_crap; 123 unsigned i_crapcounter; /* serial number for i_crap */ 124 125 /* 126 * Inode extensions 127 */ 128 union { 129 /* Other extensions could go here... */ 130 struct ffs_inode_ext ffs; 131 struct ext2fs_inode_ext e2fs; 132 struct lfs_inode_ext *lfs; 133 } inode_ext; 134 #define i_snapblklist inode_ext.ffs.ffs_snapblklist 135 #define i_ffs_first_data_blk inode_ext.ffs.ffs_first_data_blk 136 #define i_ffs_first_indir_blk inode_ext.ffs.ffs_first_indir_blk 137 #define i_e2fs_last_lblk inode_ext.e2fs.ext2fs_last_lblk 138 #define i_e2fs_last_blk inode_ext.e2fs.ext2fs_last_blk 139 /* 140 * Copies from the on-disk dinode itself. 141 * 142 * These fields are currently only used by FFS and LFS, 143 * do NOT use them with ext2fs. 144 */ 145 u_int16_t i_mode; /* IFMT, permissions; see below. */ 146 int16_t i_nlink; /* File link count. */ 147 u_int64_t i_size; /* File byte count. */ 148 u_int32_t i_flags; /* Status flags (chflags). */ 149 int32_t i_gen; /* Generation number. */ 150 u_int32_t i_uid; /* File owner. */ 151 u_int32_t i_gid; /* File group. */ 152 u_int16_t i_omode; /* Old mode, for ufs_reclaim. */ 153 154 struct dirhash *i_dirhash; /* Hashing for large directories */ 155 156 /* 157 * The on-disk dinode itself. 158 */ 159 union { 160 struct ufs1_dinode *ffs1_din; /* 128 bytes of the on-disk dinode. */ 161 struct ufs2_dinode *ffs2_din; 162 struct ext2fs_dinode *e2fs_din; /* 128 bytes of the on-disk 163 dinode. */ 164 } i_din; 165 }; 166 167 #define i_ffs1_atime i_din.ffs1_din->di_atime 168 #define i_ffs1_atimensec i_din.ffs1_din->di_atimensec 169 #define i_ffs1_blocks i_din.ffs1_din->di_blocks 170 #define i_ffs1_ctime i_din.ffs1_din->di_ctime 171 #define i_ffs1_ctimensec i_din.ffs1_din->di_ctimensec 172 #define i_ffs1_db i_din.ffs1_din->di_db 173 #define i_ffs1_flags i_din.ffs1_din->di_flags 174 #define i_ffs1_gen i_din.ffs1_din->di_gen 175 #define i_ffs1_gid i_din.ffs1_din->di_gid 176 #define i_ffs1_ib i_din.ffs1_din->di_ib 177 #define i_ffs1_mode i_din.ffs1_din->di_mode 178 #define i_ffs1_mtime i_din.ffs1_din->di_mtime 179 #define i_ffs1_mtimensec i_din.ffs1_din->di_mtimensec 180 #define i_ffs1_nlink i_din.ffs1_din->di_nlink 181 #define i_ffs1_rdev i_din.ffs1_din->di_rdev 182 #define i_ffs1_size i_din.ffs1_din->di_size 183 #define i_ffs1_uid i_din.ffs1_din->di_uid 184 #define i_ffs1_ouid i_din.ffs1_din->di_oldids[0] 185 #define i_ffs1_ogid i_din.ffs1_din->di_oldids[1] 186 187 #define i_ffs2_atime i_din.ffs2_din->di_atime 188 #define i_ffs2_atimensec i_din.ffs2_din->di_atimensec 189 #define i_ffs2_birthtime i_din.ffs2_din->di_birthtime 190 #define i_ffs2_birthnsec i_din.ffs2_din->di_birthnsec 191 #define i_ffs2_blocks i_din.ffs2_din->di_blocks 192 #define i_ffs2_blksize i_din.ffs2_din->di_blksize 193 #define i_ffs2_ctime i_din.ffs2_din->di_ctime 194 #define i_ffs2_ctimensec i_din.ffs2_din->di_ctimensec 195 #define i_ffs2_db i_din.ffs2_din->di_db 196 #define i_ffs2_flags i_din.ffs2_din->di_flags 197 #define i_ffs2_gen i_din.ffs2_din->di_gen 198 #define i_ffs2_gid i_din.ffs2_din->di_gid 199 #define i_ffs2_ib i_din.ffs2_din->di_ib 200 #define i_ffs2_mode i_din.ffs2_din->di_mode 201 #define i_ffs2_mtime i_din.ffs2_din->di_mtime 202 #define i_ffs2_mtimensec i_din.ffs2_din->di_mtimensec 203 #define i_ffs2_nlink i_din.ffs2_din->di_nlink 204 #define i_ffs2_rdev i_din.ffs2_din->di_rdev 205 #define i_ffs2_size i_din.ffs2_din->di_size 206 #define i_ffs2_uid i_din.ffs2_din->di_uid 207 #define i_ffs2_kernflags i_din.ffs2_din->di_kernflags 208 #define i_ffs2_extsize i_din.ffs2_din->di_extsize 209 #define i_ffs2_extb i_din.ffs2_din->di_extb 210 211 #define i_e2fs_mode i_din.e2fs_din->e2di_mode 212 #define i_e2fs_uid i_din.e2fs_din->e2di_uid 213 #define i_e2fs_size i_din.e2fs_din->e2di_size 214 #define i_e2fs_atime i_din.e2fs_din->e2di_atime 215 #define i_e2fs_ctime i_din.e2fs_din->e2di_ctime 216 #define i_e2fs_mtime i_din.e2fs_din->e2di_mtime 217 #define i_e2fs_dtime i_din.e2fs_din->e2di_dtime 218 #define i_e2fs_gid i_din.e2fs_din->e2di_gid 219 #define i_e2fs_nlink i_din.e2fs_din->e2di_nlink 220 #define i_e2fs_nblock i_din.e2fs_din->e2di_nblock 221 #define i_e2fs_flags i_din.e2fs_din->e2di_flags 222 #define i_e2fs_version i_din.e2fs_din->e2di_version 223 #define i_e2fs_blocks i_din.e2fs_din->e2di_blocks 224 #define i_e2fs_rdev i_din.e2fs_din->e2di_rdev 225 #define i_e2fs_gen i_din.e2fs_din->e2di_gen 226 #define i_e2fs_facl i_din.e2fs_din->e2di_facl 227 #define i_e2fs_dacl i_din.e2fs_din->e2di_dacl 228 #define i_e2fs_faddr i_din.e2fs_din->e2di_faddr 229 #define i_e2fs_nblock_high i_din.e2fs_din->e2di_nblock_high 230 #define i_e2fs_facl_high i_din.e2fs_din->e2di_facl_high 231 #define i_e2fs_uid_high i_din.e2fs_din->e2di_uid_high 232 #define i_e2fs_gid_high i_din.e2fs_din->e2di_gid_high 233 234 /* These flags are kept in i_flag. */ 235 #define IN_ACCESS 0x0001 /* Access time update request. */ 236 #define IN_CHANGE 0x0002 /* Inode change time update request. */ 237 #define IN_UPDATE 0x0004 /* Inode was written to; update mtime. */ 238 #define IN_MODIFY 0x2000 /* Modification time update request. */ 239 #define IN_MODIFIED 0x0008 /* Inode has been modified. */ 240 #define IN_ACCESSED 0x0010 /* Inode has been accessed. */ 241 /* unused 0x0020 */ /* was IN_RENAME */ 242 #define IN_SHLOCK 0x0040 /* File has shared lock. */ 243 #define IN_EXLOCK 0x0080 /* File has exclusive lock. */ 244 /* unused 0x0100 */ /* was LFS-only IN_CLEANING */ 245 /* unused 0x0200 */ /* was LFS-only IN_ADIROP */ 246 #define IN_SPACECOUNTED 0x0400 /* Blocks to be freed in free count. */ 247 /* unused 0x1000 */ /* was LFS-only IN_PAGING */ 248 /* unused 0x4000 */ /* was LFS-only IN_CDIROP */ 249 #if defined(_KERNEL) 250 251 /* 252 * The DIP macro is used to access fields in the dinode that are 253 * not cached in the inode itself. 254 */ 255 #define DIP(ip, field) \ 256 (((ip)->i_ump->um_fstype == UFS1) ? \ 257 (ip)->i_ffs1_##field : (ip)->i_ffs2_##field) 258 259 #define DIP_ASSIGN(ip, field, value) \ 260 do { \ 261 if ((ip)->i_ump->um_fstype == UFS1) \ 262 (ip)->i_ffs1_##field = (value); \ 263 else \ 264 (ip)->i_ffs2_##field = (value); \ 265 } while(0) 266 267 #define DIP_ADD(ip, field, value) \ 268 do { \ 269 if ((ip)->i_ump->um_fstype == UFS1) \ 270 (ip)->i_ffs1_##field += (value); \ 271 else \ 272 (ip)->i_ffs2_##field += (value); \ 273 } while(0) 274 275 #define SHORTLINK(ip) \ 276 (((ip)->i_ump->um_fstype == UFS1) ? \ 277 (void *)(ip)->i_ffs1_db : (void *)(ip)->i_ffs2_db) 278 279 280 /* 281 * Structure used to pass around logical block paths generated by 282 * ufs_getlbns and used by truncate and bmap code. 283 */ 284 struct indir { 285 daddr_t in_lbn; /* Logical block number. */ 286 int in_off; /* Offset in buffer. */ 287 int in_exists; /* Flag if the block exists. */ 288 }; 289 290 /* Convert between inode pointers and vnode pointers. */ 291 #define VTOI(vp) ((struct inode *)(vp)->v_data) 292 #define ITOV(ip) ((ip)->i_vnode) 293 294 /* This overlays the fid structure (see fstypes.h). */ 295 struct ufid { 296 u_int16_t ufid_len; /* Length of structure. */ 297 u_int16_t ufid_pad; /* Force 32-bit alignment. */ 298 int32_t ufid_gen; /* Generation number. */ 299 ino_t ufid_ino; /* File number (ino). */ 300 }; 301 #endif /* _KERNEL */ 302 303 #endif /* !_UFS_UFS_INODE_H_ */ 304