nfsnode.h revision 1.7
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 1.7 1994/02/15 21:07:15 pk 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 struct timeval n_delayed_atime; /* Non-urgent access/modified time */ 68 struct timeval n_delayed_mtime; /* updates are stored here. */ 69 }; 70 71 #define n_forw n_chain[0] 72 #define n_back n_chain[1] 73 74 #ifdef KERNEL 75 /* 76 * Convert between nfsnode pointers and vnode pointers 77 */ 78 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 79 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 80 #endif 81 /* 82 * Flags for n_flag 83 */ 84 #define NLOCKED 0x1 /* Lock the node for other local accesses */ 85 #define NWANT 0x2 /* Want above lock */ 86 #define NMODIFIED 0x4 /* Might have a modified buffer in bio */ 87 #define NWRITEERR 0x8 /* Flag write errors so close will know */ 88 89 /* 90 * Prototypes for NFS vnode operations 91 */ 92 int nfs_lookup __P(( 93 struct vnode *vp, 94 struct nameidata *ndp, 95 struct proc *p)); 96 int nfs_create __P(( 97 struct nameidata *ndp, 98 struct vattr *vap, 99 struct proc *p)); 100 int nfs_mknod __P(( 101 struct nameidata *ndp, 102 struct vattr *vap, 103 struct ucred *cred, 104 struct proc *p)); 105 int nfs_open __P(( 106 struct vnode *vp, 107 int mode, 108 struct ucred *cred, 109 struct proc *p)); 110 int nfs_close __P(( 111 struct vnode *vp, 112 int fflag, 113 struct ucred *cred, 114 struct proc *p)); 115 int nfs_access __P(( 116 struct vnode *vp, 117 int mode, 118 struct ucred *cred, 119 struct proc *p)); 120 int nfs_getattr __P(( 121 struct vnode *vp, 122 struct vattr *vap, 123 struct ucred *cred, 124 struct proc *p)); 125 int nfs_setattr __P(( 126 struct vnode *vp, 127 struct vattr *vap, 128 struct ucred *cred, 129 struct proc *p)); 130 int nfs_read __P(( 131 struct vnode *vp, 132 struct uio *uio, 133 int ioflag, 134 struct ucred *cred)); 135 int nfs_write __P(( 136 struct vnode *vp, 137 struct uio *uio, 138 int ioflag, 139 struct ucred *cred)); 140 #define nfs_ioctl ((int (*) __P(( \ 141 struct vnode *vp, \ 142 int command, \ 143 caddr_t data, \ 144 int fflag, \ 145 struct ucred *cred, \ 146 struct proc *p))) enoioctl) 147 #define nfs_select ((int (*) __P(( \ 148 struct vnode *vp, \ 149 int which, \ 150 int fflags, \ 151 struct ucred *cred, \ 152 struct proc *p))) seltrue) 153 int nfs_mmap __P(( 154 struct vnode *vp, 155 int fflags, 156 struct ucred *cred, 157 struct proc *p)); 158 int nfs_fsync __P(( 159 struct vnode *vp, 160 int fflags, 161 struct ucred *cred, 162 int waitfor, 163 struct proc *p)); 164 #define nfs_seek ((int (*) __P(( \ 165 struct vnode *vp, \ 166 off_t oldoff, \ 167 off_t newoff, \ 168 struct ucred *cred))) nullop) 169 int nfs_remove __P(( 170 struct nameidata *ndp, 171 struct proc *p)); 172 int nfs_link __P(( 173 struct vnode *vp, 174 struct nameidata *ndp, 175 struct proc *p)); 176 int nfs_rename __P(( 177 struct nameidata *fndp, 178 struct nameidata *tdnp, 179 struct proc *p)); 180 int nfs_mkdir __P(( 181 struct nameidata *ndp, 182 struct vattr *vap, 183 struct proc *p)); 184 int nfs_rmdir __P(( 185 struct nameidata *ndp, 186 struct proc *p)); 187 int nfs_symlink __P(( 188 struct nameidata *ndp, 189 struct vattr *vap, 190 char *target, 191 struct proc *p)); 192 int nfs_readdir __P(( 193 struct vnode *vp, 194 struct uio *uio, 195 struct ucred *cred, 196 int *eofflagp, 197 u_int *cookies, 198 int ncookies)); 199 int nfs_readlink __P(( 200 struct vnode *vp, 201 struct uio *uio, 202 struct ucred *cred)); 203 int nfs_abortop __P(( 204 struct nameidata *ndp)); 205 int nfs_inactive __P(( 206 struct vnode *vp, 207 struct proc *p)); 208 int nfs_reclaim __P(( 209 struct vnode *vp)); 210 int nfs_lock __P(( 211 struct vnode *vp)); 212 int nfs_unlock __P(( 213 struct vnode *vp)); 214 int nfs_bmap __P(( 215 struct vnode *vp, 216 daddr_t bn, 217 struct vnode **vpp, 218 daddr_t *bnp)); 219 int nfs_strategy __P(( 220 struct buf *bp)); 221 int nfs_print __P(( 222 struct vnode *vp)); 223 int nfs_islocked __P(( 224 struct vnode *vp)); 225 int nfs_advlock __P(( 226 struct vnode *vp, 227 caddr_t id, 228 int op, 229 struct flock *fl, 230 int flags)); 231 int nfsspec_close __P(( 232 struct vnode *vp, 233 int fflag, 234 struct ucred *cred, 235 struct proc *p)); 236 int nfsspec_read __P(( 237 struct vnode *vp, 238 struct uio *uio, 239 int ioflag, 240 struct ucred *cred)); 241 int nfsspec_write __P(( 242 struct vnode *vp, 243 struct uio *uio, 244 int ioflag, 245 struct ucred *cred)); 246 int nfsfifo_close __P(( 247 struct vnode *vp, 248 int fflag, 249 struct ucred *cred, 250 struct proc *p)); 251 int nfsfifo_read __P(( 252 struct vnode *vp, 253 struct uio *uio, 254 int ioflag, 255 struct ucred *cred)); 256 int nfsfifo_write __P(( 257 struct vnode *vp, 258 struct uio *uio, 259 int ioflag, 260 struct ucred *cred)); 261 #endif /* !_NFS_NFSNODE_H_ */ 262
Indexes created Thu Oct 02 10:09:58 GMT 2025