142 lines
5.0 KiB
C
142 lines
5.0 KiB
C
/* $OpenBSD: nfsnode.h,v 1.43 2024/04/30 17:04:23 miod Exp $ */
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/* $NetBSD: nfsnode.h,v 1.16 1996/02/18 11:54:04 fvdl Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. 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. 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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* @(#)nfsnode.h 8.9 (Berkeley) 5/14/95
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*/
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#ifndef _NFS_NFSNODE_H_
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#define _NFS_NFSNODE_H_
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#ifndef _NFS_NFS_H_
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#include <nfs/nfs.h>
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#endif
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#include <sys/lock.h>
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/*
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* Silly rename structure that hangs off the nfsnode until the name
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* can be removed by nfs_inactive()
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*/
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struct sillyrename {
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struct ucred *s_cred;
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struct vnode *s_dvp;
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long s_namlen;
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char s_name[24];
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};
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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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RB_ENTRY(nfsnode) n_entry; /* filehandle/node tree. */
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u_quad_t n_size; /* Current size of file */
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struct vattr n_vattr; /* Vnode attribute cache */
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time_t n_attrstamp; /* Attr. cache timestamp */
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struct timespec n_mtime; /* Prev modify time. */
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time_t n_ctime; /* Prev create time. */
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nfsfh_t *n_fhp; /* NFS File Handle */
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struct vnode *n_vnode; /* associated vnode */
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struct lockf_state *n_lockf; /* Locking record of file */
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struct rrwlock n_lock; /* NFSnode lock */
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int n_error; /* Save write error value */
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union {
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struct timespec nf_atim; /* Special file times */
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nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */
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} n_un1;
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union {
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struct timespec nf_mtim;
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off_t nd_direof; /* Dir. EOF offset cache */
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} n_un2;
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struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */
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short n_fhsize; /* size in bytes, of fh */
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short n_flag; /* Flag for locking.. */
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nfsfh_t n_fh; /* Small File Handle */
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time_t n_accstamp; /* Access cache timestamp */
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uid_t n_accuid; /* Last access requester */
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int n_accmode; /* Last mode requested */
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int n_accerror; /* Last returned error */
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struct ucred *n_rcred;
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struct ucred *n_wcred;
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off_t n_pushedlo; /* 1st blk in committed range */
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off_t n_pushedhi; /* Last block in range */
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off_t n_pushlo; /* 1st block in commit range */
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off_t n_pushhi; /* Last block in range */
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struct rwlock n_commitlock; /* Serialize commits */
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int n_commitflags;
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};
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/*
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* Values for n_commitflags
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*/
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#define NFS_COMMIT_PUSH_VALID 0x0001 /* push range valid */
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#define NFS_COMMIT_PUSHED_VALID 0x0002 /* pushed range valid */
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#define n_atim n_un1.nf_atim
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#define n_mtim n_un2.nf_mtim
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#define n_cookieverf n_un1.nd_cookieverf
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#define n_direofoffset n_un2.nd_direof
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/*
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* Flags for n_flag
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*/
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#define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */
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#define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */
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#define NMODIFIED 0x0004 /* Might have a modified buffer in bio */
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#define NWRITEERR 0x0008 /* Flag write errors so close will know */
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#define NACC 0x0100 /* Special file accessed */
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#define NUPD 0x0200 /* Special file updated */
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#define NCHG 0x0400 /* Special file times changed */
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#define NFS_INVALIDATE_ATTRCACHE(np) ((np)->n_attrstamp = 0)
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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) ((np)->n_vnode)
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/*
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* Queue head for nfsiod's
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*/
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extern TAILQ_HEAD(nfs_bufqhead, buf) nfs_bufq;
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extern uint32_t nfs_bufqlen, nfs_bufqmax;
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#endif /* _NFS_NFSNODE_H_ */
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