nfsnode.h revision 1.1
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 * @(#)nfsnode.h 7.12 (Berkeley) 4/16/91 37 */ 38 39 #ifndef _NFS_NFSNODE_H_ 40 #define _NFS_NFSNODE_H_ 41 42 /* 43 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 44 * is purely coincidental. 45 * There is a unique nfsnode allocated for each active file, 46 * each current directory, each mounted-on file, text file, and the root. 47 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 48 */ 49 50 struct nfsnode { 51 struct nfsnode *n_chain[2]; /* must be first */ 52 nfsv2fh_t n_fh; /* NFS File Handle */ 53 long n_flag; /* Flag for locking.. */ 54 struct vnode *n_vnode; /* vnode associated with this nfsnode */ 55 time_t n_attrstamp; /* Time stamp (sec) for attributes */ 56 struct vattr n_vattr; /* Vnode attribute cache */ 57 struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */ 58 u_long n_size; /* Current size of file */ 59 time_t n_mtime; /* Prev modify time to maintain data cache consistency*/ 60 time_t n_ctime; /* Prev create time for name cache consistency*/ 61 int n_error; /* Save write error value */ 62 pid_t n_lockholder; /* holder of nfsnode lock */ 63 pid_t n_lockwaiter; /* most recent waiter for nfsnode lock */ 64 u_long n_direofoffset; /* Dir. EOF offset cache */ 65 }; 66 67 #define n_forw n_chain[0] 68 #define n_back n_chain[1] 69 70 #ifdef KERNEL 71 /* 72 * Convert between nfsnode pointers and vnode pointers 73 */ 74 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 75 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 76 #endif 77 /* 78 * Flags for n_flag 79 */ 80 #define NLOCKED 0x1 /* Lock the node for other local accesses */ 81 #define NWANT 0x2 /* Want above lock */ 82 #define NMODIFIED 0x4 /* Might have a modified buffer in bio */ 83 #define NWRITEERR 0x8 /* Flag write errors so close will know */ 84 85 /* 86 * Prototypes for NFS vnode operations 87 */ 88 int nfs_lookup __P(( 89 struct vnode *vp, 90 struct nameidata *ndp, 91 struct proc *p)); 92 int nfs_create __P(( 93 struct nameidata *ndp, 94 struct vattr *vap, 95 struct proc *p)); 96 int nfs_mknod __P(( 97 struct nameidata *ndp, 98 struct vattr *vap, 99 struct ucred *cred, 100 struct proc *p)); 101 int nfs_open __P(( 102 struct vnode *vp, 103 int mode, 104 struct ucred *cred, 105 struct proc *p)); 106 int nfs_close __P(( 107 struct vnode *vp, 108 int fflag, 109 struct ucred *cred, 110 struct proc *p)); 111 int nfs_access __P(( 112 struct vnode *vp, 113 int mode, 114 struct ucred *cred, 115 struct proc *p)); 116 int nfs_getattr __P(( 117 struct vnode *vp, 118 struct vattr *vap, 119 struct ucred *cred, 120 struct proc *p)); 121 int nfs_setattr __P(( 122 struct vnode *vp, 123 struct vattr *vap, 124 struct ucred *cred, 125 struct proc *p)); 126 int nfs_read __P(( 127 struct vnode *vp, 128 struct uio *uio, 129 int ioflag, 130 struct ucred *cred)); 131 int nfs_write __P(( 132 struct vnode *vp, 133 struct uio *uio, 134 int ioflag, 135 struct ucred *cred)); 136 #define nfs_ioctl ((int (*) __P(( \ 137 struct vnode *vp, \ 138 int command, \ 139 caddr_t data, \ 140 int fflag, \ 141 struct ucred *cred, \ 142 struct proc *p))) enoioctl) 143 #define nfs_select ((int (*) __P(( \ 144 struct vnode *vp, \ 145 int which, \ 146 int fflags, \ 147 struct ucred *cred, \ 148 struct proc *p))) seltrue) 149 int nfs_mmap __P(( 150 struct vnode *vp, 151 int fflags, 152 struct ucred *cred, 153 struct proc *p)); 154 int nfs_fsync __P(( 155 struct vnode *vp, 156 int fflags, 157 struct ucred *cred, 158 int waitfor, 159 struct proc *p)); 160 #define nfs_seek ((int (*) __P(( \ 161 struct vnode *vp, \ 162 off_t oldoff, \ 163 off_t newoff, \ 164 struct ucred *cred))) nullop) 165 int nfs_remove __P(( 166 struct nameidata *ndp, 167 struct proc *p)); 168 int nfs_link __P(( 169 struct vnode *vp, 170 struct nameidata *ndp, 171 struct proc *p)); 172 int nfs_rename __P(( 173 struct nameidata *fndp, 174 struct nameidata *tdnp, 175 struct proc *p)); 176 int nfs_mkdir __P(( 177 struct nameidata *ndp, 178 struct vattr *vap, 179 struct proc *p)); 180 int nfs_rmdir __P(( 181 struct nameidata *ndp, 182 struct proc *p)); 183 int nfs_symlink __P(( 184 struct nameidata *ndp, 185 struct vattr *vap, 186 char *target, 187 struct proc *p)); 188 int nfs_readdir __P(( 189 struct vnode *vp, 190 struct uio *uio, 191 struct ucred *cred, 192 int *eofflagp)); 193 int nfs_readlink __P(( 194 struct vnode *vp, 195 struct uio *uio, 196 struct ucred *cred)); 197 int nfs_abortop __P(( 198 struct nameidata *ndp)); 199 int nfs_inactive __P(( 200 struct vnode *vp, 201 struct proc *p)); 202 int nfs_reclaim __P(( 203 struct vnode *vp)); 204 int nfs_lock __P(( 205 struct vnode *vp)); 206 int nfs_unlock __P(( 207 struct vnode *vp)); 208 int nfs_bmap __P(( 209 struct vnode *vp, 210 daddr_t bn, 211 struct vnode **vpp, 212 daddr_t *bnp)); 213 int nfs_strategy __P(( 214 struct buf *bp)); 215 int nfs_print __P(( 216 struct vnode *vp)); 217 int nfs_islocked __P(( 218 struct vnode *vp)); 219 int nfs_advlock __P(( 220 struct vnode *vp, 221 caddr_t id, 222 int op, 223 struct flock *fl, 224 int flags)); 225 226 #endif /* !_NFS_NFSNODE_H_ */ 227
Indexes created Thu Sep 25 16:09:42 GMT 2025