229 lines
6.5 KiB
C
229 lines
6.5 KiB
C
/*
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* Copyright (c) 1989 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)nfsnode.h 7.12 (Berkeley) 4/16/91
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* $Id: nfsnode.h,v 1.3 1993/05/22 09:00:56 cgd Exp $
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*/
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#ifndef _NFS_NFSNODE_H_
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#define _NFS_NFSNODE_H_
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/*
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* The nfsnode is the nfs equivalent to ufs's inode. Any similarity
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* is purely coincidental.
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* There is a unique nfsnode allocated for each active file,
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* each current directory, each mounted-on file, text file, and the root.
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* An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
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*/
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struct nfsnode {
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struct nfsnode *n_chain[2]; /* must be first */
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nfsv2fh_t n_fh; /* NFS File Handle */
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long n_flag; /* Flag for locking.. */
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struct vnode *n_vnode; /* vnode associated with this nfsnode */
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time_t n_attrstamp; /* Time stamp (sec) for attributes */
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struct vattr n_vattr; /* Vnode attribute cache */
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struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */
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u_long n_size; /* Current size of file */
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struct lockf *n_lockf; /* Locking record of file */
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time_t n_mtime; /* Prev modify time to maintain data cache consistency*/
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time_t n_ctime; /* Prev create time for name cache consistency*/
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int n_error; /* Save write error value */
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pid_t n_lockholder; /* holder of nfsnode lock */
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pid_t n_lockwaiter; /* most recent waiter for nfsnode lock */
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u_long n_direofoffset; /* Dir. EOF offset cache */
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};
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#define n_forw n_chain[0]
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#define n_back n_chain[1]
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#ifdef KERNEL
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/*
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* Convert between nfsnode pointers and vnode pointers
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*/
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#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
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#define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
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#endif
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/*
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* Flags for n_flag
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*/
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#define NLOCKED 0x1 /* Lock the node for other local accesses */
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#define NWANT 0x2 /* Want above lock */
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#define NMODIFIED 0x4 /* Might have a modified buffer in bio */
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#define NWRITEERR 0x8 /* Flag write errors so close will know */
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/*
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* Prototypes for NFS vnode operations
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*/
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int nfs_lookup __P((
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struct vnode *vp,
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struct nameidata *ndp,
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struct proc *p));
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int nfs_create __P((
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struct nameidata *ndp,
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struct vattr *vap,
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struct proc *p));
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int nfs_mknod __P((
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struct nameidata *ndp,
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struct vattr *vap,
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struct ucred *cred,
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struct proc *p));
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int nfs_open __P((
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struct vnode *vp,
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int mode,
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struct ucred *cred,
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struct proc *p));
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int nfs_close __P((
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struct vnode *vp,
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int fflag,
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struct ucred *cred,
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struct proc *p));
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int nfs_access __P((
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struct vnode *vp,
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int mode,
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struct ucred *cred,
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struct proc *p));
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int nfs_getattr __P((
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struct vnode *vp,
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struct vattr *vap,
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struct ucred *cred,
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struct proc *p));
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int nfs_setattr __P((
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struct vnode *vp,
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struct vattr *vap,
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struct ucred *cred,
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struct proc *p));
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int nfs_read __P((
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struct vnode *vp,
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struct uio *uio,
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int ioflag,
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struct ucred *cred));
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int nfs_write __P((
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struct vnode *vp,
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struct uio *uio,
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int ioflag,
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struct ucred *cred));
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#define nfs_ioctl ((int (*) __P(( \
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struct vnode *vp, \
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int command, \
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caddr_t data, \
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int fflag, \
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struct ucred *cred, \
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struct proc *p))) enoioctl)
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#define nfs_select ((int (*) __P(( \
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struct vnode *vp, \
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int which, \
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int fflags, \
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struct ucred *cred, \
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struct proc *p))) seltrue)
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int nfs_mmap __P((
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struct vnode *vp,
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int fflags,
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struct ucred *cred,
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struct proc *p));
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int nfs_fsync __P((
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struct vnode *vp,
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int fflags,
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struct ucred *cred,
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int waitfor,
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struct proc *p));
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#define nfs_seek ((int (*) __P(( \
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struct vnode *vp, \
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off_t oldoff, \
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off_t newoff, \
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struct ucred *cred))) nullop)
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int nfs_remove __P((
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struct nameidata *ndp,
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struct proc *p));
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int nfs_link __P((
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struct vnode *vp,
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struct nameidata *ndp,
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struct proc *p));
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int nfs_rename __P((
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struct nameidata *fndp,
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struct nameidata *tdnp,
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struct proc *p));
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int nfs_mkdir __P((
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struct nameidata *ndp,
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struct vattr *vap,
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struct proc *p));
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int nfs_rmdir __P((
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struct nameidata *ndp,
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struct proc *p));
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int nfs_symlink __P((
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struct nameidata *ndp,
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struct vattr *vap,
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char *target,
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struct proc *p));
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int nfs_readdir __P((
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struct vnode *vp,
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struct uio *uio,
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struct ucred *cred,
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int *eofflagp));
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int nfs_readlink __P((
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struct vnode *vp,
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struct uio *uio,
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struct ucred *cred));
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int nfs_abortop __P((
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struct nameidata *ndp));
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int nfs_inactive __P((
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struct vnode *vp,
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struct proc *p));
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int nfs_reclaim __P((
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struct vnode *vp));
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int nfs_lock __P((
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struct vnode *vp));
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int nfs_unlock __P((
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struct vnode *vp));
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int nfs_bmap __P((
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struct vnode *vp,
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daddr_t bn,
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struct vnode **vpp,
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daddr_t *bnp));
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int nfs_strategy __P((
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struct buf *bp));
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int nfs_print __P((
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struct vnode *vp));
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int nfs_islocked __P((
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struct vnode *vp));
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int nfs_advlock __P((
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struct vnode *vp,
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caddr_t id,
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int op,
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struct flock *fl,
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int flags));
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#endif /* !_NFS_NFSNODE_H_ */
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