lfs_inode.h revision 1.5.2.4
1 /* $NetBSD: lfs_inode.h,v 1.5.2.4 2017/12/03 11:39:22 jdolecek Exp $ */ 2 /* from NetBSD: ulfs_inode.h,v 1.5 2013/06/06 00:51:50 dholland Exp */ 3 /* from NetBSD: inode.h,v 1.72 2016/06/03 15:36:03 christos Exp */ 4 5 /* 6 * Copyright (c) 1982, 1989, 1993 7 * The Regents of the University of California. All rights reserved. 8 * (c) UNIX System Laboratories, Inc. 9 * All or some portions of this file are derived from material licensed 10 * to the University of California by American Telephone and Telegraph 11 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 12 * the permission of UNIX System Laboratories, Inc. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. 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 */ 40 41 #ifndef _UFS_LFS_LFS_INODE_H_ 42 #define _UFS_LFS_LFS_INODE_H_ 43 44 /* 45 * Some of the userlevel code (fsck, newfs, lfs_cleanerd) wants to use 46 * the in-memory inode structure in a faked-up kernel environment. 47 * This header file provides a reasonably sanitized version of the 48 * structures and definitions needed for that purpose. 49 */ 50 51 #include <miscfs/genfs/genfs_node.h> 52 #include <ufs/lfs/lfs.h> 53 54 /* 55 * Adjustable filesystem parameters 56 */ 57 #define MIN_FREE_SEGS 20 58 #define MIN_RESV_SEGS 15 59 60 /* 61 * The following constants define the usage of the quota file array in the 62 * ulfsmount structure and dquot array in the inode structure. The semantics 63 * of the elements of these arrays are defined in the routine lfs_getinoquota; 64 * the remainder of the quota code treats them generically and need not be 65 * inspected when changing the size of the array. 66 */ 67 #define ULFS_MAXQUOTAS 2 68 #define ULFS_USRQUOTA 0 /* element used for user quotas */ 69 #define ULFS_GRPQUOTA 1 /* element used for group quotas */ 70 71 /* 72 * Lookup result state (other than the result inode). This is 73 * currently stashed in the vnode between VOP_LOOKUP and directory 74 * operation VOPs, which is gross. 75 * 76 * XXX ulr_diroff is a lookup hint from the previos call of VOP_LOOKUP. 77 * probably it should not be here. 78 */ 79 struct ulfs_lookup_results { 80 int32_t ulr_count; /* Size of free slot in directory. */ 81 doff_t ulr_endoff; /* End of useful stuff in directory. */ 82 doff_t ulr_diroff; /* Offset in dir, where we found last entry. */ 83 doff_t ulr_offset; /* Offset of free space in directory. */ 84 uint32_t ulr_reclen; /* Size of found directory entry. */ 85 }; 86 87 /* notyet XXX */ 88 #define ULFS_CHECK_CRAPCOUNTER(dp) ((void)(dp)->i_crapcounter) 89 90 /* 91 * Per-filesystem inode extensions. 92 */ 93 struct lfs_inode_ext; 94 95 /* 96 * The inode is used to describe each active (or recently active) file in the 97 * ULFS filesystem. It is composed of two types of information. The first part 98 * is the information that is needed only while the file is active (such as 99 * the identity of the file and linkage to speed its lookup). The second part 100 * is the permanent meta-data associated with the file which is read in 101 * from the permanent dinode from long term storage when the file becomes 102 * active, and is put back when the file is no longer being used. 103 */ 104 struct inode { 105 struct genfs_node i_gnode; 106 TAILQ_ENTRY(inode) i_nextsnap; /* snapshot file list. */ 107 struct vnode *i_vnode; /* Vnode associated with this inode. */ 108 struct ulfsmount *i_ump; /* Mount point associated with this inode. */ 109 struct vnode *i_devvp; /* Vnode for block I/O. */ 110 111 uint32_t i_state; /* state */ 112 #define IN_ACCESS 0x0001 /* Access time update request. */ 113 #define IN_CHANGE 0x0002 /* Inode change time update request. */ 114 #define IN_UPDATE 0x0004 /* Inode was written to; update mtime. */ 115 #define IN_MODIFY 0x2000 /* Modification time update request. */ 116 #define IN_MODIFIED 0x0008 /* Inode has been modified. */ 117 #define IN_ACCESSED 0x0010 /* Inode has been accessed. */ 118 /* unused 0x0020 */ /* was IN_RENAME */ 119 #define IN_SHLOCK 0x0040 /* File has shared lock. */ 120 #define IN_EXLOCK 0x0080 /* File has exclusive lock. */ 121 #define IN_CLEANING 0x0100 /* LFS: file is being cleaned */ 122 #define IN_ADIROP 0x0200 /* LFS: dirop in progress */ 123 /* unused 0x0400 */ /* was FFS-only IN_SPACECOUNTED */ 124 #define IN_PAGING 0x1000 /* LFS: file is on paging queue */ 125 #define IN_CDIROP 0x4000 /* LFS: dirop completed pending i/o */ 126 127 /* XXX this is missing some of the flags */ 128 #define IN_ALLMOD (IN_MODIFIED|IN_ACCESS|IN_CHANGE|IN_UPDATE|IN_MODIFY|IN_ACCESSED|IN_CLEANING) 129 130 dev_t i_dev; /* Device associated with the inode. */ 131 ino_t i_number; /* The identity of the inode. */ 132 133 struct lfs *i_lfs; /* The LFS volume we belong to. */ 134 135 void *i_unused1; /* Unused. */ 136 struct dquot *i_dquot[ULFS_MAXQUOTAS]; /* Dquot structures. */ 137 u_quad_t i_modrev; /* Revision level for NFS lease. */ 138 struct lockf *i_lockf;/* Head of byte-level lock list. */ 139 140 /* 141 * Side effects; used during (and after) directory lookup. 142 * XXX should not be here. 143 */ 144 struct ulfs_lookup_results i_crap; 145 unsigned i_crapcounter; /* serial number for i_crap */ 146 147 /* 148 * Inode extensions 149 */ 150 union { 151 /* Other extensions could go here... */ 152 struct lfs_inode_ext *lfs; 153 } inode_ext; 154 /* 155 * Copies from the on-disk dinode itself. 156 * 157 * These fields are currently only used by LFS. 158 */ 159 uint16_t i_mode; /* IFMT, permissions; see below. */ 160 int16_t i_nlink; /* File link count. */ 161 uint64_t i_size; /* File byte count. */ 162 uint32_t i_flags; /* Status flags (chflags). */ 163 int32_t i_gen; /* Generation number. */ 164 uint32_t i_uid; /* File owner. */ 165 uint32_t i_gid; /* File group. */ 166 uint16_t i_omode; /* Old mode, for ulfs_reclaim. */ 167 168 struct dirhash *i_dirhash; /* Hashing for large directories */ 169 170 /* 171 * The on-disk dinode itself. 172 */ 173 union lfs_dinode *i_din; 174 }; 175 176 /* 177 * LFS inode extensions. 178 */ 179 struct lfs_inode_ext { 180 off_t lfs_osize; /* size of file on disk */ 181 uint64_t lfs_effnblocks; /* number of blocks when i/o completes */ 182 size_t lfs_fragsize[ULFS_NDADDR]; /* size of on-disk direct blocks */ 183 TAILQ_ENTRY(inode) lfs_dchain; /* Dirop chain. */ 184 TAILQ_ENTRY(inode) lfs_pchain; /* Paging chain. */ 185 #define LFSI_NO_GOP_WRITE 0x01 186 #define LFSI_DELETED 0x02 187 #define LFSI_WRAPBLOCK 0x04 188 #define LFSI_WRAPWAIT 0x08 189 #define LFSI_BMAP 0x10 190 uint32_t lfs_iflags; /* Inode flags */ 191 daddr_t lfs_hiblk; /* Highest lbn held by inode */ 192 #ifdef _KERNEL 193 SPLAY_HEAD(lfs_splay, lbnentry) lfs_lbtree; /* Tree of balloc'd lbns */ 194 int lfs_nbtree; /* Size of tree */ 195 LIST_HEAD(, segdelta) lfs_segdhd; 196 #endif 197 int16_t lfs_odnlink; /* on-disk nlink count for cleaner */ 198 }; 199 #define i_lfs_osize inode_ext.lfs->lfs_osize 200 #define i_lfs_effnblks inode_ext.lfs->lfs_effnblocks 201 #define i_lfs_fragsize inode_ext.lfs->lfs_fragsize 202 #define i_lfs_dchain inode_ext.lfs->lfs_dchain 203 #define i_lfs_pchain inode_ext.lfs->lfs_pchain 204 #define i_lfs_iflags inode_ext.lfs->lfs_iflags 205 #define i_lfs_hiblk inode_ext.lfs->lfs_hiblk 206 #define i_lfs_lbtree inode_ext.lfs->lfs_lbtree 207 #define i_lfs_nbtree inode_ext.lfs->lfs_nbtree 208 #define i_lfs_segdhd inode_ext.lfs->lfs_segdhd 209 #define i_lfs_odnlink inode_ext.lfs->lfs_odnlink 210 211 /* 212 * "struct buf" associated definitions 213 */ 214 215 #ifdef _KERNEL 216 217 # define LFS_IS_MALLOC_BUF(bp) ((bp)->b_iodone == lfs_callback) 218 219 /* log for debugging writes to the Ifile */ 220 # ifdef DEBUG 221 struct lfs_log_entry { 222 const char *op; 223 const char *file; 224 int pid; 225 int line; 226 daddr_t block; 227 unsigned long flags; 228 }; 229 extern int lfs_lognum; 230 extern struct lfs_log_entry lfs_log[LFS_LOGLENGTH]; 231 # define LFS_BWRITE_LOG(bp) lfs_bwrite_log((bp), __FILE__, __LINE__) 232 # define LFS_ENTER_LOG(theop, thefile, theline, lbn, theflags, thepid) do {\ 233 \ 234 mutex_enter(&lfs_lock); \ 235 lfs_log[lfs_lognum].op = theop; \ 236 lfs_log[lfs_lognum].file = thefile; \ 237 lfs_log[lfs_lognum].line = (theline); \ 238 lfs_log[lfs_lognum].pid = (thepid); \ 239 lfs_log[lfs_lognum].block = (lbn); \ 240 lfs_log[lfs_lognum].flags = (theflags); \ 241 lfs_lognum = (lfs_lognum + 1) % LFS_LOGLENGTH; \ 242 mutex_exit(&lfs_lock); \ 243 } while (0) 244 245 /* Must match list in lfs_vfsops.c ! */ 246 # define DLOG_RF 0 /* roll forward */ 247 # define DLOG_ALLOC 1 /* inode alloc */ 248 # define DLOG_AVAIL 2 /* lfs_{,r,f}avail */ 249 # define DLOG_FLUSH 3 /* flush */ 250 # define DLOG_LLIST 4 /* locked list accounting */ 251 # define DLOG_WVNODE 5 /* vflush/writevnodes verbose */ 252 # define DLOG_VNODE 6 /* vflush/writevnodes */ 253 # define DLOG_SEG 7 /* segwrite */ 254 # define DLOG_SU 8 /* seguse accounting */ 255 # define DLOG_CLEAN 9 /* cleaner routines */ 256 # define DLOG_MOUNT 10 /* mount/unmount */ 257 # define DLOG_PAGE 11 /* putpages/gop_write */ 258 # define DLOG_DIROP 12 /* dirop accounting */ 259 # define DLOG_MALLOC 13 /* lfs_malloc accounting */ 260 # define DLOG_MAX 14 /* The terminator */ 261 # define DLOG(a) lfs_debug_log a 262 # else /* ! DEBUG */ 263 # define LFS_BCLEAN_LOG(fs, bp) 264 # define LFS_BWRITE_LOG(bp) VOP_BWRITE((bp)->b_vp, (bp)) 265 # define LFS_ENTER_LOG(theop, thefile, theline, lbn, theflags, thepid) __nothing 266 # define DLOG(a) 267 # endif /* ! DEBUG */ 268 #else /* ! _KERNEL */ 269 # define LFS_BWRITE_LOG(bp) VOP_BWRITE((bp)) 270 #endif /* _KERNEL */ 271 272 273 #endif /* _UFS_LFS_LFS_INODE_H_ */ 274
Indexes created Tue Oct 14 15:09:51 GMT 2025