1 /* $OpenBSD: nfsnode.h,v 1.43 2024/04/30 17:04:23 miod Exp $ */ 2 /* $NetBSD: nfsnode.h,v 1.16 1996/02/18 11:54:04 fvdl Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Rick Macklem at The University of Guelph. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95 36 */ 37 38 39 #ifndef _NFS_NFSNODE_H_ 40 #define _NFS_NFSNODE_H_ 41 42 #ifndef _NFS_NFS_H_ 43 #include <nfs/nfs.h> 44 #endif 45 46 #include <sys/lock.h> 47 48 /* 49 * Silly rename structure that hangs off the nfsnode until the name 50 * can be removed by nfs_inactive() 51 */ 52 struct sillyrename { 53 struct ucred *s_cred; 54 struct vnode *s_dvp; 55 long s_namlen; 56 char s_name[24]; 57 }; 58 59 /* 60 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 61 * is purely coincidental. 62 * There is a unique nfsnode allocated for each active file, 63 * each current directory, each mounted-on file, text file, and the root. 64 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 65 */ 66 struct nfsnode { 67 RB_ENTRY(nfsnode) n_entry; /* filehandle/node tree. */ 68 u_quad_t n_size; /* Current size of file */ 69 struct vattr n_vattr; /* Vnode attribute cache */ 70 time_t n_attrstamp; /* Attr. cache timestamp */ 71 struct timespec n_mtime; /* Prev modify time. */ 72 time_t n_ctime; /* Prev create time. */ 73 nfsfh_t *n_fhp; /* NFS File Handle */ 74 struct vnode *n_vnode; /* associated vnode */ 75 struct lockf_state *n_lockf; /* Locking record of file */ 76 struct rrwlock n_lock; /* NFSnode lock */ 77 int n_error; /* Save write error value */ 78 union { 79 struct timespec nf_atim; /* Special file times */ 80 nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ 81 } n_un1; 82 union { 83 struct timespec nf_mtim; 84 off_t nd_direof; /* Dir. EOF offset cache */ 85 } n_un2; 86 struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ 87 short n_fhsize; /* size in bytes, of fh */ 88 short n_flag; /* Flag for locking.. */ 89 nfsfh_t n_fh; /* Small File Handle */ 90 time_t n_accstamp; /* Access cache timestamp */ 91 uid_t n_accuid; /* Last access requester */ 92 int n_accmode; /* Last mode requested */ 93 int n_accerror; /* Last returned error */ 94 struct ucred *n_rcred; 95 struct ucred *n_wcred; 96 97 off_t n_pushedlo; /* 1st blk in committed range */ 98 off_t n_pushedhi; /* Last block in range */ 99 off_t n_pushlo; /* 1st block in commit range */ 100 off_t n_pushhi; /* Last block in range */ 101 struct rwlock n_commitlock; /* Serialize commits */ 102 int n_commitflags; 103 }; 104 105 /* 106 * Values for n_commitflags 107 */ 108 #define NFS_COMMIT_PUSH_VALID 0x0001 /* push range valid */ 109 #define NFS_COMMIT_PUSHED_VALID 0x0002 /* pushed range valid */ 110 111 #define n_atim n_un1.nf_atim 112 #define n_mtim n_un2.nf_mtim 113 #define n_cookieverf n_un1.nd_cookieverf 114 #define n_direofoffset n_un2.nd_direof 115 116 /* 117 * Flags for n_flag 118 */ 119 #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ 120 #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ 121 #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 122 #define NWRITEERR 0x0008 /* Flag write errors so close will know */ 123 #define NACC 0x0100 /* Special file accessed */ 124 #define NUPD 0x0200 /* Special file updated */ 125 #define NCHG 0x0400 /* Special file times changed */ 126 127 #define NFS_INVALIDATE_ATTRCACHE(np) ((np)->n_attrstamp = 0) 128 129 /* 130 * Convert between nfsnode pointers and vnode pointers 131 */ 132 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 133 #define NFSTOV(np) ((np)->n_vnode) 134 135 /* 136 * Queue head for nfsiod's 137 */ 138 extern TAILQ_HEAD(nfs_bufqhead, buf) nfs_bufq; 139 extern uint32_t nfs_bufqlen, nfs_bufqmax; 140 141 #endif /* _NFS_NFSNODE_H_ */ 142