nfsnode.h revision 1.5.2.1
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 1.5.2.1 1993/12/16 23:44:23 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_quad n_qsize; /* 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_quad n_qdireofoffset; /* Dir. EOF offset cache */ 67 }; 68 69 #if 1 70 #if BYTE_ORDER == LITTLE_ENDIAN 71 #define n_size n_qsize.val[0] 72 #define n_direofoffset n_qdireofoffset.val[0] 73 #else /* BYTE_ORDER == BIG_ENDIAN */ 74 #define n_size n_qsize.val[1] 75 #define n_direofoffset n_qdireofoffset.val[1] 76 #endif 77 #endif 78 79 #define n_forw n_chain[0] 80 #define n_back n_chain[1] 81 82 #ifdef KERNEL 83 /* 84 * Convert between nfsnode pointers and vnode pointers 85 */ 86 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 87 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 88 #endif 89 /* 90 * Flags for n_flag 91 */ 92 #define NLOCKED 0x1 /* Lock the node for other local accesses */ 93 #define NWANT 0x2 /* Want above lock */ 94 #define NMODIFIED 0x4 /* Might have a modified buffer in bio */ 95 #define NWRITEERR 0x8 /* Flag write errors so close will know */ 96 97 /* 98 * Prototypes for NFS vnode operations 99 */ 100 int nfs_lookup __P(( 101 struct vnode *vp, 102 struct nameidata *ndp, 103 struct proc *p)); 104 int nfs_create __P(( 105 struct nameidata *ndp, 106 struct vattr *vap, 107 struct proc *p)); 108 int nfs_mknod __P(( 109 struct nameidata *ndp, 110 struct vattr *vap, 111 struct ucred *cred, 112 struct proc *p)); 113 int nfs_open __P(( 114 struct vnode *vp, 115 int mode, 116 struct ucred *cred, 117 struct proc *p)); 118 int nfs_close __P(( 119 struct vnode *vp, 120 int fflag, 121 struct ucred *cred, 122 struct proc *p)); 123 int nfs_access __P(( 124 struct vnode *vp, 125 int mode, 126 struct ucred *cred, 127 struct proc *p)); 128 int nfs_getattr __P(( 129 struct vnode *vp, 130 struct vattr *vap, 131 struct ucred *cred, 132 struct proc *p)); 133 int nfs_setattr __P(( 134 struct vnode *vp, 135 struct vattr *vap, 136 struct ucred *cred, 137 struct proc *p)); 138 int nfs_read __P(( 139 struct vnode *vp, 140 struct uio *uio, 141 int ioflag, 142 struct ucred *cred)); 143 int nfs_write __P(( 144 struct vnode *vp, 145 struct uio *uio, 146 int ioflag, 147 struct ucred *cred)); 148 #define nfs_ioctl ((int (*) __P(( \ 149 struct vnode *vp, \ 150 int command, \ 151 caddr_t data, \ 152 int fflag, \ 153 struct ucred *cred, \ 154 struct proc *p))) enoioctl) 155 #define nfs_select ((int (*) __P(( \ 156 struct vnode *vp, \ 157 int which, \ 158 int fflags, \ 159 struct ucred *cred, \ 160 struct proc *p))) seltrue) 161 int nfs_mmap __P(( 162 struct vnode *vp, 163 int fflags, 164 struct ucred *cred, 165 struct proc *p)); 166 int nfs_fsync __P(( 167 struct vnode *vp, 168 int fflags, 169 struct ucred *cred, 170 int waitfor, 171 struct proc *p)); 172 #define nfs_seek ((int (*) __P(( \ 173 struct vnode *vp, \ 174 off_t oldoff, \ 175 off_t newoff, \ 176 struct ucred *cred))) nullop) 177 int nfs_remove __P(( 178 struct nameidata *ndp, 179 struct proc *p)); 180 int nfs_link __P(( 181 struct vnode *vp, 182 struct nameidata *ndp, 183 struct proc *p)); 184 int nfs_rename __P(( 185 struct nameidata *fndp, 186 struct nameidata *tdnp, 187 struct proc *p)); 188 int nfs_mkdir __P(( 189 struct nameidata *ndp, 190 struct vattr *vap, 191 struct proc *p)); 192 int nfs_rmdir __P(( 193 struct nameidata *ndp, 194 struct proc *p)); 195 int nfs_symlink __P(( 196 struct nameidata *ndp, 197 struct vattr *vap, 198 char *target, 199 struct proc *p)); 200 int nfs_readdir __P(( 201 struct vnode *vp, 202 struct uio *uio, 203 struct ucred *cred, 204 int *eofflagp, 205 u_int *cookies, 206 int ncookies)); 207 int nfs_readlink __P(( 208 struct vnode *vp, 209 struct uio *uio, 210 struct ucred *cred)); 211 int nfs_abortop __P(( 212 struct nameidata *ndp)); 213 int nfs_inactive __P(( 214 struct vnode *vp, 215 struct proc *p)); 216 int nfs_reclaim __P(( 217 struct vnode *vp)); 218 int nfs_lock __P(( 219 struct vnode *vp)); 220 int nfs_unlock __P(( 221 struct vnode *vp)); 222 int nfs_bmap __P(( 223 struct vnode *vp, 224 daddr_t bn, 225 struct vnode **vpp, 226 daddr_t *bnp)); 227 int nfs_strategy __P(( 228 struct buf *bp)); 229 void nfs_print __P(( 230 struct vnode *vp)); 231 int nfs_islocked __P(( 232 struct vnode *vp)); 233 int nfs_advlock __P(( 234 struct vnode *vp, 235 caddr_t id, 236 int op, 237 struct flock *fl, 238 int flags)); 239 240 #endif /* !_NFS_NFSNODE_H_ */ 241
Indexes created Thu Oct 02 10:09:58 GMT 2025