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acl.h
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dinode.h
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dir.h
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dirhash.h
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extattr.h
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gjournal.h
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inode.h
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quota.h
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ufs_extern.h
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ufsmount.h
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Editing: inode.h
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1989, 1993 * The Regents of the University of California. All rights reserved. * (c) UNIX System Laboratories, Inc. * All or some portions of this file are derived from material licensed * to the University of California by American Telephone and Telegraph * Co. or Unix System Laboratories, Inc. and are reproduced herein with * the permission of UNIX System Laboratories, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)inode.h 8.9 (Berkeley) 5/14/95 * $FreeBSD$ */ #ifndef _UFS_UFS_INODE_H_ #define _UFS_UFS_INODE_H_ #include <sys/lock.h> #include <sys/queue.h> #include <ufs/ufs/dinode.h> #include <sys/seqc.h> #ifdef DIAGNOSTIC #include <sys/stack.h> #endif /* * This must agree with the definition in <ufs/ufs/dir.h>. */ #define doff_t int32_t #ifdef DIAGNOSTIC struct iown_tracker { struct thread *tr_owner; struct stack tr_st; struct stack tr_unlock; int tr_gen; }; #endif /* * The inode is used to describe each active (or recently active) file in the * UFS filesystem. It is composed of two types of information. The first part * is the information that is needed only while the file is active (such as * the identity of the file and linkage to speed its lookup). The second part * is the permanent meta-data associated with the file which is read in * from the permanent dinode from long term storage when the file becomes * active, and is put back when the file is no longer being used. * * An inode may only be changed while holding either the exclusive * vnode lock or the shared vnode lock and the vnode interlock. We use * the latter only for "read" and "get" operations that require * changing i_flag, or a timestamp. This locking protocol allows executing * those operations without having to upgrade the vnode lock from shared to * exclusive. */ struct inode { TAILQ_ENTRY(inode) i_nextsnap; /* snapshot file list. */ struct vnode *i_vnode;/* Vnode associated with this inode. */ struct ufsmount *i_ump;/* Ufsmount point associated with this inode. */ struct dquot *i_dquot[MAXQUOTAS]; /* Dquot structures. */ union { struct dirhash *dirhash; /* Hashing for large directories. */ daddr_t *snapblklist; /* Collect expunged snapshot blocks. */ } i_un; /* * The real copy of the on-disk inode. */ union { struct ufs1_dinode *din1; /* UFS1 on-disk dinode. */ struct ufs2_dinode *din2; /* UFS2 on-disk dinode. */ } dinode_u; ino_t i_number; /* The identity of the inode. */ u_int32_t i_flag; /* flags, see below */ int i_effnlink; /* i_nlink when I/O completes */ /* * Side effects; used during directory lookup. */ int32_t i_count; /* Size of free slot in directory. */ doff_t i_endoff; /* End of useful stuff in directory. */ doff_t i_diroff; /* Offset in dir, where we found last entry. */ doff_t i_offset; /* Offset of free space in directory. */ #ifdef DIAGNOSTIC int i_lock_gen; struct iown_tracker i_count_tracker; struct iown_tracker i_endoff_tracker; struct iown_tracker i_offset_tracker; #endif int i_nextclustercg; /* last cg searched for cluster */ /* * Data for extended attribute modification. */ u_char *i_ea_area; /* Pointer to malloced copy of EA area */ unsigned i_ea_len; /* Length of i_ea_area */ int i_ea_error; /* First errno in transaction */ int i_ea_refs; /* Number of users of EA area */ /* * Copies from the on-disk dinode itself. */ u_int64_t i_size; /* File byte count. */ u_int64_t i_gen; /* Generation number. */ u_int32_t i_flags; /* Status flags (chflags). */ u_int32_t i_uid; /* File owner. */ u_int32_t i_gid; /* File group. */ u_int16_t i_mode; /* IFMT, permissions; see below. */ int16_t i_nlink; /* File link count. */ }; /* * These flags are kept in i_flag. */ #define IN_ACCESS 0x0001 /* Access time update request. */ #define IN_CHANGE 0x0002 /* Inode change time update request. */ #define IN_UPDATE 0x0004 /* Modification time update request. */ #define IN_MODIFIED 0x0008 /* Inode has been modified. */ #define IN_NEEDSYNC 0x0010 /* Inode requires fsync. */ #define IN_LAZYMOD 0x0020 /* Modified, but don't write yet. */ #define IN_LAZYACCESS 0x0040 /* Process IN_ACCESS after the suspension finished */ #define IN_EA_LOCKED 0x0080 /* Extended attributes locked */ #define IN_EA_LOCKWAIT 0x0100 /* Want extended attributes lock */ #define IN_TRUNCATED 0x0200 /* Journaled truncation pending. */ #define IN_UFS2 0x0400 /* UFS2 vs UFS1 */ #define IN_IBLKDATA 0x0800 /* datasync requires inode block update */ #define IN_SIZEMOD 0x1000 /* Inode size has been modified */ #define IN_ENDOFF 0x2000 /* Free space at the end of directory, try to truncate when possible */ #define PRINT_INODE_FLAGS "\20\20b16\17b15\16b14\15sizemod" \ "\14iblkdata\13is_ufs2\12truncated\11ea_lockwait\10ea_locked" \ "\7lazyaccess\6lazymod\5needsync\4modified\3update\2change\1access" #define UFS_INODE_FLAG_LAZY_MASK \ (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE | IN_LAZYMOD | \ IN_LAZYACCESS) /* * Some flags can persist a vnode transitioning to 0 hold count and being tkaen * off the list. */ #define UFS_INODE_FLAG_LAZY_MASK_ASSERTABLE \ (UFS_INODE_FLAG_LAZY_MASK & ~(IN_LAZYMOD | IN_LAZYACCESS)) #define UFS_INODE_SET_MODE(ip, mode) do { \ struct inode *_ip = (ip); \ int _mode = (mode); \ \ ASSERT_VOP_IN_SEQC(ITOV(_ip)); \ atomic_store_short(&(_ip)->i_mode, _mode); \ } while (0) #define UFS_INODE_SET_FLAG(ip, flags) do { \ struct inode *_ip = (ip); \ struct vnode *_vp = ITOV(_ip); \ int _flags = (flags); \ \ _ip->i_flag |= _flags; \ if (_flags & UFS_INODE_FLAG_LAZY_MASK) \ vlazy(_vp); \ } while (0) #define UFS_INODE_SET_FLAG_SHARED(ip, flags) do { \ struct inode *_ip = (ip); \ struct vnode *_vp = ITOV(_ip); \ int _flags = (flags); \ \ ASSERT_VI_UNLOCKED(_vp, __func__); \ if ((_ip->i_flag & (_flags)) != _flags) { \ VI_LOCK(_vp); \ _ip->i_flag |= _flags; \ if (_flags & UFS_INODE_FLAG_LAZY_MASK) \ vlazy(_vp); \ VI_UNLOCK(_vp); \ } \ } while (0) #define i_dirhash i_un.dirhash #define i_snapblklist i_un.snapblklist #define i_din1 dinode_u.din1 #define i_din2 dinode_u.din2 #ifdef _KERNEL #define ITOUMP(ip) ((ip)->i_ump) #define ITODEV(ip) (ITOUMP(ip)->um_dev) #define ITODEVVP(ip) (ITOUMP(ip)->um_devvp) #define ITOFS(ip) (ITOUMP(ip)->um_fs) #define ITOVFS(ip) ((ip)->i_vnode->v_mount) static inline _Bool I_IS_UFS1(const struct inode *ip) { return ((ip->i_flag & IN_UFS2) == 0); } static inline _Bool I_IS_UFS2(const struct inode *ip) { return ((ip->i_flag & IN_UFS2) != 0); } /* * The DIP macro is used to access fields in the dinode that are * not cached in the inode itself. */ #define DIP(ip, field) (I_IS_UFS1(ip) ? (ip)->i_din1->d##field : \ (ip)->i_din2->d##field) #define DIP_SET(ip, field, val) do { \ if (I_IS_UFS1(ip)) \ (ip)->i_din1->d##field = (val); \ else \ (ip)->i_din2->d##field = (val); \ } while (0) #define SHORTLINK(ip) (I_IS_UFS1(ip) ? \ (caddr_t)(ip)->i_din1->di_db : (caddr_t)(ip)->i_din2->di_db) #define IS_SNAPSHOT(ip) ((ip)->i_flags & SF_SNAPSHOT) /* * Structure used to pass around logical block paths generated by * ufs_getlbns and used by truncate and bmap code. */ struct indir { ufs2_daddr_t in_lbn; /* Logical block number. */ int in_off; /* Offset in buffer. */ }; /* Convert between inode pointers and vnode pointers. */ #define VTOI(vp) ((struct inode *)(vp)->v_data) #define VTOI_SMR(vp) ((struct inode *)vn_load_v_data_smr(vp)) #define ITOV(ip) ((ip)->i_vnode) /* Determine if soft dependencies are being done */ #define DOINGSOFTDEP(vp) \ (((vp)->v_mount->mnt_flag & (MNT_SOFTDEP | MNT_SUJ)) != 0) #define MOUNTEDSOFTDEP(mp) (((mp)->mnt_flag & (MNT_SOFTDEP | MNT_SUJ)) != 0) #define DOINGSUJ(vp) (((vp)->v_mount->mnt_flag & MNT_SUJ) != 0) #define MOUNTEDSUJ(mp) (((mp)->mnt_flag & MNT_SUJ) != 0) /* This overlays the fid structure (see mount.h). */ struct ufid { u_int16_t ufid_len; /* Length of structure. */ u_int16_t ufid_pad; /* Force 32-bit alignment. */ uint32_t ufid_ino; /* File number (ino). */ uint32_t ufid_gen; /* Generation number. */ }; #ifdef DIAGNOSTIC void ufs_init_trackers(struct inode *ip); void ufs_unlock_tracker(struct inode *ip); doff_t ufs_get_i_offset(struct inode *ip, const char *file, int line); void ufs_set_i_offset(struct inode *ip, doff_t off, const char *file, int line); #define I_OFFSET(ip) ufs_get_i_offset(ip, __FILE__, __LINE__) #define SET_I_OFFSET(ip, off) ufs_set_i_offset(ip, off, __FILE__, __LINE__) int32_t ufs_get_i_count(struct inode *ip, const char *file, int line); void ufs_set_i_count(struct inode *ip, int32_t cnt, const char *file, int line); #define I_COUNT(ip) ufs_get_i_count(ip, __FILE__, __LINE__) #define SET_I_COUNT(ip, cnt) ufs_set_i_count(ip, cnt, __FILE__, __LINE__) doff_t ufs_get_i_endoff(struct inode *ip, const char *file, int line); void ufs_set_i_endoff(struct inode *ip, doff_t off, const char *file, int line); #define I_ENDOFF(ip) ufs_get_i_endoff(ip, __FILE__, __LINE__) #define SET_I_ENDOFF(ip, off) ufs_set_i_endoff(ip, off, __FILE__, __LINE__) #else #define I_OFFSET(ip) ((ip)->i_offset) #define SET_I_OFFSET(ip, off) ((ip)->i_offset = (off)) #define I_COUNT(ip) ((ip)->i_count) #define SET_I_COUNT(ip, cnt) ((ip)->i_count = cnt) #define I_ENDOFF(ip) ((ip)->i_endoff) #define SET_I_ENDOFF(ip, off) ((ip)->i_endoff = off) #endif #endif /* _KERNEL */ #endif /* !_UFS_UFS_INODE_H_ */
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