NetBSD/sys/nfs/nfsnode.h

229 lines
6.5 KiB
C

/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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.
*
* from: @(#)nfsnode.h 7.12 (Berkeley) 4/16/91
* $Id: nfsnode.h,v 1.3 1993/05/22 09:00:56 cgd Exp $
*/
#ifndef _NFS_NFSNODE_H_
#define _NFS_NFSNODE_H_
/*
* The nfsnode is the nfs equivalent to ufs's inode. Any similarity
* is purely coincidental.
* There is a unique nfsnode allocated for each active file,
* each current directory, each mounted-on file, text file, and the root.
* An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
*/
struct nfsnode {
struct nfsnode *n_chain[2]; /* must be first */
nfsv2fh_t n_fh; /* NFS File Handle */
long n_flag; /* Flag for locking.. */
struct vnode *n_vnode; /* vnode associated with this nfsnode */
time_t n_attrstamp; /* Time stamp (sec) for attributes */
struct vattr n_vattr; /* Vnode attribute cache */
struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */
u_long n_size; /* Current size of file */
struct lockf *n_lockf; /* Locking record of file */
time_t n_mtime; /* Prev modify time to maintain data cache consistency*/
time_t n_ctime; /* Prev create time for name cache consistency*/
int n_error; /* Save write error value */
pid_t n_lockholder; /* holder of nfsnode lock */
pid_t n_lockwaiter; /* most recent waiter for nfsnode lock */
u_long n_direofoffset; /* Dir. EOF offset cache */
};
#define n_forw n_chain[0]
#define n_back n_chain[1]
#ifdef KERNEL
/*
* Convert between nfsnode pointers and vnode pointers
*/
#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
#define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
#endif
/*
* Flags for n_flag
*/
#define NLOCKED 0x1 /* Lock the node for other local accesses */
#define NWANT 0x2 /* Want above lock */
#define NMODIFIED 0x4 /* Might have a modified buffer in bio */
#define NWRITEERR 0x8 /* Flag write errors so close will know */
/*
* Prototypes for NFS vnode operations
*/
int nfs_lookup __P((
struct vnode *vp,
struct nameidata *ndp,
struct proc *p));
int nfs_create __P((
struct nameidata *ndp,
struct vattr *vap,
struct proc *p));
int nfs_mknod __P((
struct nameidata *ndp,
struct vattr *vap,
struct ucred *cred,
struct proc *p));
int nfs_open __P((
struct vnode *vp,
int mode,
struct ucred *cred,
struct proc *p));
int nfs_close __P((
struct vnode *vp,
int fflag,
struct ucred *cred,
struct proc *p));
int nfs_access __P((
struct vnode *vp,
int mode,
struct ucred *cred,
struct proc *p));
int nfs_getattr __P((
struct vnode *vp,
struct vattr *vap,
struct ucred *cred,
struct proc *p));
int nfs_setattr __P((
struct vnode *vp,
struct vattr *vap,
struct ucred *cred,
struct proc *p));
int nfs_read __P((
struct vnode *vp,
struct uio *uio,
int ioflag,
struct ucred *cred));
int nfs_write __P((
struct vnode *vp,
struct uio *uio,
int ioflag,
struct ucred *cred));
#define nfs_ioctl ((int (*) __P(( \
struct vnode *vp, \
int command, \
caddr_t data, \
int fflag, \
struct ucred *cred, \
struct proc *p))) enoioctl)
#define nfs_select ((int (*) __P(( \
struct vnode *vp, \
int which, \
int fflags, \
struct ucred *cred, \
struct proc *p))) seltrue)
int nfs_mmap __P((
struct vnode *vp,
int fflags,
struct ucred *cred,
struct proc *p));
int nfs_fsync __P((
struct vnode *vp,
int fflags,
struct ucred *cred,
int waitfor,
struct proc *p));
#define nfs_seek ((int (*) __P(( \
struct vnode *vp, \
off_t oldoff, \
off_t newoff, \
struct ucred *cred))) nullop)
int nfs_remove __P((
struct nameidata *ndp,
struct proc *p));
int nfs_link __P((
struct vnode *vp,
struct nameidata *ndp,
struct proc *p));
int nfs_rename __P((
struct nameidata *fndp,
struct nameidata *tdnp,
struct proc *p));
int nfs_mkdir __P((
struct nameidata *ndp,
struct vattr *vap,
struct proc *p));
int nfs_rmdir __P((
struct nameidata *ndp,
struct proc *p));
int nfs_symlink __P((
struct nameidata *ndp,
struct vattr *vap,
char *target,
struct proc *p));
int nfs_readdir __P((
struct vnode *vp,
struct uio *uio,
struct ucred *cred,
int *eofflagp));
int nfs_readlink __P((
struct vnode *vp,
struct uio *uio,
struct ucred *cred));
int nfs_abortop __P((
struct nameidata *ndp));
int nfs_inactive __P((
struct vnode *vp,
struct proc *p));
int nfs_reclaim __P((
struct vnode *vp));
int nfs_lock __P((
struct vnode *vp));
int nfs_unlock __P((
struct vnode *vp));
int nfs_bmap __P((
struct vnode *vp,
daddr_t bn,
struct vnode **vpp,
daddr_t *bnp));
int nfs_strategy __P((
struct buf *bp));
int nfs_print __P((
struct vnode *vp));
int nfs_islocked __P((
struct vnode *vp));
int nfs_advlock __P((
struct vnode *vp,
caddr_t id,
int op,
struct flock *fl,
int flags));
#endif /* !_NFS_NFSNODE_H_ */