nfsnode.h revision 1.4
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 1.4 1993/08/02 23:12:32 mycroft 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 struct lockf *n_lockf; /* Locking record of file */ 61 time_t n_mtime; /* Prev modify time to maintain data cache consistency*/ 62 time_t n_ctime; /* Prev create time for name cache consistency*/ 63 int n_error; /* Save write error value */ 64 pid_t n_lockholder; /* holder of nfsnode lock */ 65 pid_t n_lockwaiter; /* most recent waiter for nfsnode lock */ 66 u_long n_direofoffset; /* Dir. EOF offset cache */ 67 }; 68 69 #define n_forw n_chain[0] 70 #define n_back n_chain[1] 71 72 #ifdef KERNEL 73 /* 74 * Convert between nfsnode pointers and vnode pointers 75 */ 76 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 77 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 78 #endif 79 /* 80 * Flags for n_flag 81 */ 82 #define NLOCKED 0x1 /* Lock the node for other local accesses */ 83 #define NWANT 0x2 /* Want above lock */ 84 #define NMODIFIED 0x4 /* Might have a modified buffer in bio */ 85 #define NWRITEERR 0x8 /* Flag write errors so close will know */ 86 87 /* 88 * Prototypes for NFS vnode operations 89 */ 90 int nfs_lookup __P(( 91 struct vnode *vp, 92 struct nameidata *ndp, 93 struct proc *p)); 94 int nfs_create __P(( 95 struct nameidata *ndp, 96 struct vattr *vap, 97 struct proc *p)); 98 int nfs_mknod __P(( 99 struct nameidata *ndp, 100 struct vattr *vap, 101 struct ucred *cred, 102 struct proc *p)); 103 int nfs_open __P(( 104 struct vnode *vp, 105 int mode, 106 struct ucred *cred, 107 struct proc *p)); 108 int nfs_close __P(( 109 struct vnode *vp, 110 int fflag, 111 struct ucred *cred, 112 struct proc *p)); 113 int nfs_access __P(( 114 struct vnode *vp, 115 int mode, 116 struct ucred *cred, 117 struct proc *p)); 118 int nfs_getattr __P(( 119 struct vnode *vp, 120 struct vattr *vap, 121 struct ucred *cred, 122 struct proc *p)); 123 int nfs_setattr __P(( 124 struct vnode *vp, 125 struct vattr *vap, 126 struct ucred *cred, 127 struct proc *p)); 128 int nfs_read __P(( 129 struct vnode *vp, 130 struct uio *uio, 131 int ioflag, 132 struct ucred *cred)); 133 int nfs_write __P(( 134 struct vnode *vp, 135 struct uio *uio, 136 int ioflag, 137 struct ucred *cred)); 138 #define nfs_ioctl ((int (*) __P(( \ 139 struct vnode *vp, \ 140 int command, \ 141 caddr_t data, \ 142 int fflag, \ 143 struct ucred *cred, \ 144 struct proc *p))) enoioctl) 145 #define nfs_select ((int (*) __P(( \ 146 struct vnode *vp, \ 147 int which, \ 148 int fflags, \ 149 struct ucred *cred, \ 150 struct proc *p))) seltrue) 151 int nfs_mmap __P(( 152 struct vnode *vp, 153 int fflags, 154 struct ucred *cred, 155 struct proc *p)); 156 int nfs_fsync __P(( 157 struct vnode *vp, 158 int fflags, 159 struct ucred *cred, 160 int waitfor, 161 struct proc *p)); 162 #define nfs_seek ((int (*) __P(( \ 163 struct vnode *vp, \ 164 off_t oldoff, \ 165 off_t newoff, \ 166 struct ucred *cred))) nullop) 167 int nfs_remove __P(( 168 struct nameidata *ndp, 169 struct proc *p)); 170 int nfs_link __P(( 171 struct vnode *vp, 172 struct nameidata *ndp, 173 struct proc *p)); 174 int nfs_rename __P(( 175 struct nameidata *fndp, 176 struct nameidata *tdnp, 177 struct proc *p)); 178 int nfs_mkdir __P(( 179 struct nameidata *ndp, 180 struct vattr *vap, 181 struct proc *p)); 182 int nfs_rmdir __P(( 183 struct nameidata *ndp, 184 struct proc *p)); 185 int nfs_symlink __P(( 186 struct nameidata *ndp, 187 struct vattr *vap, 188 char *target, 189 struct proc *p)); 190 int nfs_readdir __P(( 191 struct vnode *vp, 192 struct uio *uio, 193 struct ucred *cred, 194 int *eofflagp)); 195 int nfs_readlink __P(( 196 struct vnode *vp, 197 struct uio *uio, 198 struct ucred *cred)); 199 int nfs_abortop __P(( 200 struct nameidata *ndp)); 201 int nfs_inactive __P(( 202 struct vnode *vp, 203 struct proc *p)); 204 int nfs_reclaim __P(( 205 struct vnode *vp)); 206 int nfs_lock __P(( 207 struct vnode *vp)); 208 int nfs_unlock __P(( 209 struct vnode *vp)); 210 int nfs_bmap __P(( 211 struct vnode *vp, 212 daddr_t bn, 213 struct vnode **vpp, 214 daddr_t *bnp)); 215 int nfs_strategy __P(( 216 struct buf *bp)); 217 void nfs_print __P(( 218 struct vnode *vp)); 219 int nfs_islocked __P(( 220 struct vnode *vp)); 221 int nfs_advlock __P(( 222 struct vnode *vp, 223 caddr_t id, 224 int op, 225 struct flock *fl, 226 int flags)); 227 228 #endif /* !_NFS_NFSNODE_H_ */ 229
Indexes created Thu Oct 02 10:09:58 GMT 2025