nfsnode.h revision 1.2
1 /* 2 * Copyright (c) 1989 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)nfsnode.h 7.12 (Berkeley) 4/16/91 37 * $Id: nfsnode.h,v 1.2 1993/05/20 03:19:11 cgd Exp $ 38 */ 39 40 #ifndef _NFS_NFSNODE_H_ 41 #define _NFS_NFSNODE_H_ 42 43 /* 44 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 45 * is purely coincidental. 46 * There is a unique nfsnode allocated for each active file, 47 * each current directory, each mounted-on file, text file, and the root. 48 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 49 */ 50 51 struct nfsnode { 52 struct nfsnode *n_chain[2]; /* must be first */ 53 nfsv2fh_t n_fh; /* NFS File Handle */ 54 long n_flag; /* Flag for locking.. */ 55 struct vnode *n_vnode; /* vnode associated with this nfsnode */ 56 time_t n_attrstamp; /* Time stamp (sec) for attributes */ 57 struct vattr n_vattr; /* Vnode attribute cache */ 58 struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ 59 u_long n_size; /* Current size of file */ 60 time_t n_mtime; /* Prev modify time to maintain data cache consistency*/ 61 time_t n_ctime; /* Prev create time for name cache consistency*/ 62 int n_error; /* Save write error value */ 63 pid_t n_lockholder; /* holder of nfsnode lock */ 64 pid_t n_lockwaiter; /* most recent waiter for nfsnode lock */ 65 u_long n_direofoffset; /* Dir. EOF offset cache */ 66 }; 67 68 #define n_forw n_chain[0] 69 #define n_back n_chain[1] 70 71 #ifdef KERNEL 72 /* 73 * Convert between nfsnode pointers and vnode pointers 74 */ 75 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 76 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 77 #endif 78 /* 79 * Flags for n_flag 80 */ 81 #define NLOCKED 0x1 /* Lock the node for other local accesses */ 82 #define NWANT 0x2 /* Want above lock */ 83 #define NMODIFIED 0x4 /* Might have a modified buffer in bio */ 84 #define NWRITEERR 0x8 /* Flag write errors so close will know */ 85 86 /* 87 * Prototypes for NFS vnode operations 88 */ 89 int nfs_lookup __P(( 90 struct vnode *vp, 91 struct nameidata *ndp, 92 struct proc *p)); 93 int nfs_create __P(( 94 struct nameidata *ndp, 95 struct vattr *vap, 96 struct proc *p)); 97 int nfs_mknod __P(( 98 struct nameidata *ndp, 99 struct vattr *vap, 100 struct ucred *cred, 101 struct proc *p)); 102 int nfs_open __P(( 103 struct vnode *vp, 104 int mode, 105 struct ucred *cred, 106 struct proc *p)); 107 int nfs_close __P(( 108 struct vnode *vp, 109 int fflag, 110 struct ucred *cred, 111 struct proc *p)); 112 int nfs_access __P(( 113 struct vnode *vp, 114 int mode, 115 struct ucred *cred, 116 struct proc *p)); 117 int nfs_getattr __P(( 118 struct vnode *vp, 119 struct vattr *vap, 120 struct ucred *cred, 121 struct proc *p)); 122 int nfs_setattr __P(( 123 struct vnode *vp, 124 struct vattr *vap, 125 struct ucred *cred, 126 struct proc *p)); 127 int nfs_read __P(( 128 struct vnode *vp, 129 struct uio *uio, 130 int ioflag, 131 struct ucred *cred)); 132 int nfs_write __P(( 133 struct vnode *vp, 134 struct uio *uio, 135 int ioflag, 136 struct ucred *cred)); 137 #define nfs_ioctl ((int (*) __P(( \ 138 struct vnode *vp, \ 139 int command, \ 140 caddr_t data, \ 141 int fflag, \ 142 struct ucred *cred, \ 143 struct proc *p))) enoioctl) 144 #define nfs_select ((int (*) __P(( \ 145 struct vnode *vp, \ 146 int which, \ 147 int fflags, \ 148 struct ucred *cred, \ 149 struct proc *p))) seltrue) 150 int nfs_mmap __P(( 151 struct vnode *vp, 152 int fflags, 153 struct ucred *cred, 154 struct proc *p)); 155 int nfs_fsync __P(( 156 struct vnode *vp, 157 int fflags, 158 struct ucred *cred, 159 int waitfor, 160 struct proc *p)); 161 #define nfs_seek ((int (*) __P(( \ 162 struct vnode *vp, \ 163 off_t oldoff, \ 164 off_t newoff, \ 165 struct ucred *cred))) nullop) 166 int nfs_remove __P(( 167 struct nameidata *ndp, 168 struct proc *p)); 169 int nfs_link __P(( 170 struct vnode *vp, 171 struct nameidata *ndp, 172 struct proc *p)); 173 int nfs_rename __P(( 174 struct nameidata *fndp, 175 struct nameidata *tdnp, 176 struct proc *p)); 177 int nfs_mkdir __P(( 178 struct nameidata *ndp, 179 struct vattr *vap, 180 struct proc *p)); 181 int nfs_rmdir __P(( 182 struct nameidata *ndp, 183 struct proc *p)); 184 int nfs_symlink __P(( 185 struct nameidata *ndp, 186 struct vattr *vap, 187 char *target, 188 struct proc *p)); 189 int nfs_readdir __P(( 190 struct vnode *vp, 191 struct uio *uio, 192 struct ucred *cred, 193 int *eofflagp)); 194 int nfs_readlink __P(( 195 struct vnode *vp, 196 struct uio *uio, 197 struct ucred *cred)); 198 int nfs_abortop __P(( 199 struct nameidata *ndp)); 200 int nfs_inactive __P(( 201 struct vnode *vp, 202 struct proc *p)); 203 int nfs_reclaim __P(( 204 struct vnode *vp)); 205 int nfs_lock __P(( 206 struct vnode *vp)); 207 int nfs_unlock __P(( 208 struct vnode *vp)); 209 int nfs_bmap __P(( 210 struct vnode *vp, 211 daddr_t bn, 212 struct vnode **vpp, 213 daddr_t *bnp)); 214 int nfs_strategy __P(( 215 struct buf *bp)); 216 int nfs_print __P(( 217 struct vnode *vp)); 218 int nfs_islocked __P(( 219 struct vnode *vp)); 220 int nfs_advlock __P(( 221 struct vnode *vp, 222 caddr_t id, 223 int op, 224 struct flock *fl, 225 int flags)); 226 227 #endif /* !_NFS_NFSNODE_H_ */ 228
Indexes created Thu Oct 02 10:09:58 GMT 2025