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- /*
- * Copyright (c) 1982, 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 7.17 (Berkeley) 5/8/91
- */
-
- #ifdef KERNEL
- #include "../ufs/dinode.h"
- #else
- #include <ufs/dinode.h>
- #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
- * permannent 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.
- */
- struct inode {
- struct inode *i_chain[2]; /* hash chain, MUST be first */
- struct vnode *i_vnode; /* vnode associated with this inode */
- struct vnode *i_devvp; /* vnode for block I/O */
- u_long i_flag; /* see below */
- dev_t i_dev; /* device where inode resides */
- ino_t i_number; /* the identity of the inode */
- struct fs *i_fs; /* filesystem associated with this inode */
- struct dquot *i_dquot[MAXQUOTAS]; /* pointer to dquot structures */
- struct lockf *i_lockf; /* head of byte-level lock list */
- long i_diroff; /* offset in dir, where we found last entry */
- off_t i_endoff; /* end of useful stuff in directory */
- long i_spare0;
- long i_spare1;
- struct dinode i_din; /* the on-disk dinode */
- };
-
- #define i_mode i_din.di_mode
- #define i_nlink i_din.di_nlink
- #define i_uid i_din.di_uid
- #define i_gid i_din.di_gid
- #if BYTE_ORDER == LITTLE_ENDIAN || defined(tahoe) /* ugh! -- must be fixed */
- #define i_size i_din.di_qsize.val[0]
- #else /* BYTE_ORDER == BIG_ENDIAN */
- #define i_size i_din.di_qsize.val[1]
- #endif
- #define i_db i_din.di_db
- #define i_ib i_din.di_ib
- #define i_atime i_din.di_atime
- #define i_mtime i_din.di_mtime
- #define i_ctime i_din.di_ctime
- #define i_blocks i_din.di_blocks
- #define i_rdev i_din.di_db[0]
- #define i_flags i_din.di_flags
- #define i_gen i_din.di_gen
- #define i_forw i_chain[0]
- #define i_back i_chain[1]
-
- /* flags */
- #define ILOCKED 0x0001 /* inode is locked */
- #define IWANT 0x0002 /* some process waiting on lock */
- #define IRENAME 0x0004 /* inode is being renamed */
- #define IUPD 0x0010 /* file has been modified */
- #define IACC 0x0020 /* inode access time to be updated */
- #define ICHG 0x0040 /* inode has been changed */
- #define IMOD 0x0080 /* inode has been modified */
- #define ISHLOCK 0x0100 /* file has shared lock */
- #define IEXLOCK 0x0200 /* file has exclusive lock */
- #define ILWAIT 0x0400 /* someone waiting on file lock */
-
- #ifdef KERNEL
- /*
- * Convert between inode pointers and vnode pointers
- */
- #define VTOI(vp) ((struct inode *)(vp)->v_data)
- #define ITOV(ip) ((ip)->i_vnode)
-
- /*
- * Convert between vnode types and inode formats
- */
- extern enum vtype iftovt_tab[];
- extern int vttoif_tab[];
- #define IFTOVT(mode) (iftovt_tab[((mode) & IFMT) >> 12])
- #define VTTOIF(indx) (vttoif_tab[(int)(indx)])
-
- #define MAKEIMODE(indx, mode) (int)(VTTOIF(indx) | (mode))
-
- u_long nextgennumber; /* next generation number to assign */
-
- extern ino_t dirpref();
-
- /*
- * Lock and unlock inodes.
- */
- #ifdef notdef
- #define ILOCK(ip) { \
- while ((ip)->i_flag & ILOCKED) { \
- (ip)->i_flag |= IWANT; \
- (void) sleep((caddr_t)(ip), PINOD); \
- } \
- (ip)->i_flag |= ILOCKED; \
- }
-
- #define IUNLOCK(ip) { \
- (ip)->i_flag &= ~ILOCKED; \
- if ((ip)->i_flag&IWANT) { \
- (ip)->i_flag &= ~IWANT; \
- wakeup((caddr_t)(ip)); \
- } \
- }
- #else
- #define ILOCK(ip) ilock(ip)
- #define IUNLOCK(ip) iunlock(ip)
- #endif
-
- #define IUPDAT(ip, t1, t2, waitfor) { \
- if (ip->i_flag&(IUPD|IACC|ICHG|IMOD)) \
- (void) iupdat(ip, t1, t2, waitfor); \
- }
-
- #define ITIMES(ip, t1, t2) { \
- if ((ip)->i_flag&(IUPD|IACC|ICHG)) { \
- (ip)->i_flag |= IMOD; \
- if ((ip)->i_flag&IACC) \
- (ip)->i_atime = (t1)->tv_sec; \
- if ((ip)->i_flag&IUPD) \
- (ip)->i_mtime = (t2)->tv_sec; \
- if ((ip)->i_flag&ICHG) \
- (ip)->i_ctime = time.tv_sec; \
- (ip)->i_flag &= ~(IACC|IUPD|ICHG); \
- } \
- }
-
- /*
- * This overlays the fid sturcture (see mount.h)
- */
- struct ufid {
- u_short ufid_len; /* length of structure */
- u_short ufid_pad; /* force long alignment */
- ino_t ufid_ino; /* file number (ino) */
- long ufid_gen; /* generation number */
- };
-
- /*
- * Prototypes for UFS vnode operations
- */
- int ufs_lookup __P((struct vnode *vp, struct nameidata *ndp, struct proc *p));
- int ufs_create __P((struct nameidata *ndp, struct vattr *vap, struct proc *p));
- int ufs_mknod __P((struct nameidata *ndp, struct vattr *vap, struct ucred *cred,
- struct proc *p));
- int ufs_open __P((struct vnode *vp, int mode, struct ucred *cred,
- struct proc *p));
- int ufs_close __P((struct vnode *vp, int fflag, struct ucred *cred,
- struct proc *p));
- int ufs_access __P((struct vnode *vp, int mode, struct ucred *cred,
- struct proc *p));
- int ufs_getattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred,
- struct proc *p));
- int ufs_setattr __P((struct vnode *vp, struct vattr *vap, struct ucred *cred,
- struct proc *p));
- int ufs_read __P((struct vnode *vp, struct uio *uio, int ioflag,
- struct ucred *cred));
- int ufs_write __P((struct vnode *vp, struct uio *uio, int ioflag,
- struct ucred *cred));
- int ufs_ioctl __P((struct vnode *vp, int command, caddr_t data, int fflag,
- struct ucred *cred, struct proc *p));
- int ufs_select __P((struct vnode *vp, int which, int fflags, struct ucred *cred,
- struct proc *p));
- int ufs_mmap __P((struct vnode *vp, int fflags, struct ucred *cred,
- struct proc *p));
- int ufs_fsync __P((struct vnode *vp, int fflags, struct ucred *cred,
- int waitfor, struct proc *p));
- int ufs_seek __P((struct vnode *vp, off_t oldoff, off_t newoff,
- struct ucred *cred));
- int ufs_remove __P((struct nameidata *ndp, struct proc *p));
- int ufs_link __P((struct vnode *vp, struct nameidata *ndp, struct proc *p));
- int ufs_rename __P((struct nameidata *fndp, struct nameidata *tdnp,
- struct proc *p));
- int ufs_mkdir __P((struct nameidata *ndp, struct vattr *vap, struct proc *p));
- int ufs_rmdir __P((struct nameidata *ndp, struct proc *p));
- int ufs_symlink __P((struct nameidata *ndp, struct vattr *vap, char *target,
- struct proc *p));
- int ufs_readdir __P((struct vnode *vp, struct uio *uio, struct ucred *cred,
- int *eofflagp));
- int ufs_readlink __P((struct vnode *vp, struct uio *uio, struct ucred *cred));
- int ufs_abortop __P((struct nameidata *ndp));
- int ufs_inactive __P((struct vnode *vp, struct proc *p));
- int ufs_reclaim __P((struct vnode *vp));
- int ufs_lock __P((struct vnode *vp));
- int ufs_unlock __P((struct vnode *vp));
- int ufs_bmap __P((struct vnode *vp, daddr_t bn, struct vnode **vpp,
- daddr_t *bnp));
- int ufs_strategy __P((struct buf *bp));
- int ufs_print __P((struct vnode *vp));
- int ufs_islocked __P((struct vnode *vp));
- int ufs_advlock __P((struct vnode *vp, caddr_t id, int op, struct flock *fl,
- int flags));
- #endif /* KERNEL */
-