1 /* $OpenBSD: nfsnode.h,v 1.6 1997/11/06 05:59:06 csapuntz Exp $ */ 2 /* $NetBSD: nfsnode.h,v 1.16 1996/02/18 11:54:04 fvdl Exp $ */ 3 4 /* 5 * Copyright (c) 1989, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Rick Macklem at The University of Guelph. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95 40 */ 41 42 43 #ifndef _NFS_NFSNODE_H_ 44 #define _NFS_NFSNODE_H_ 45 46 #ifndef _NFS_NFS_H_ 47 #include <nfs/nfs.h> 48 #endif 49 50 /* 51 * Silly rename structure that hangs off the nfsnode until the name 52 * can be removed by nfs_inactive() 53 */ 54 struct sillyrename { 55 struct ucred *s_cred; 56 struct vnode *s_dvp; 57 long s_namlen; 58 char s_name[20]; 59 }; 60 61 /* 62 * This structure is used to save the logical directory offset to 63 * NFS cookie mappings. 64 * The mappings are stored in a list headed 65 * by n_cookies, as required. 66 * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information 67 * stored in increasing logical offset byte order. 68 */ 69 #define NFSNUMCOOKIES 31 70 71 struct nfsdmap { 72 LIST_ENTRY(nfsdmap) ndm_list; 73 int ndm_eocookie; 74 nfsuint64 ndm_cookies[NFSNUMCOOKIES]; 75 }; 76 77 /* 78 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 79 * is purely coincidental. 80 * There is a unique nfsnode allocated for each active file, 81 * each current directory, each mounted-on file, text file, and the root. 82 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 83 * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite 84 * type definitions), file handles of > 32 bytes should probably be split out 85 * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by 86 * changing the definition in sys/mount.h of NFS_SMALLFH.) 87 * NB: Hopefully the current order of the fields is such that everything will 88 * be well aligned and, therefore, tightly packed. 89 */ 90 struct nfsnode { 91 LIST_ENTRY(nfsnode) n_hash; /* Hash chain */ 92 CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */ 93 u_quad_t n_size; /* Current size of file */ 94 u_quad_t n_brev; /* Modify rev when cached */ 95 u_quad_t n_lrev; /* Modify rev for lease */ 96 struct vattr n_vattr; /* Vnode attribute cache */ 97 time_t n_attrstamp; /* Attr. cache timestamp */ 98 time_t n_mtime; /* Prev modify time. */ 99 time_t n_ctime; /* Prev create time. */ 100 time_t n_expiry; /* Lease expiry time */ 101 nfsfh_t *n_fhp; /* NFS File Handle */ 102 struct vnode *n_vnode; /* associated vnode */ 103 struct lockf *n_lockf; /* Locking record of file */ 104 int n_error; /* Save write error value */ 105 union { 106 struct timespec nf_atim; /* Special file times */ 107 nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ 108 } n_un1; 109 union { 110 struct timespec nf_mtim; 111 off_t nd_direof; /* Dir. EOF offset cache */ 112 } n_un2; 113 union { 114 struct sillyrename *nf_silly; /* Ptr to silly rename struct */ 115 LIST_HEAD(, nfsdmap) nd_cook; /* cookies */ 116 } n_un3; 117 short n_fhsize; /* size in bytes, of fh */ 118 short n_flag; /* Flag for locking.. */ 119 nfsfh_t n_fh; /* Small File Handle */ 120 }; 121 122 #define n_atim n_un1.nf_atim 123 #define n_mtim n_un2.nf_mtim 124 #define n_sillyrename n_un3.nf_silly 125 #define n_cookieverf n_un1.nd_cookieverf 126 #define n_direofoffset n_un2.nd_direof 127 #define n_cookies n_un3.nd_cook 128 129 /* 130 * Flags for n_flag 131 */ 132 #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ 133 #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ 134 #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 135 #define NWRITEERR 0x0008 /* Flag write errors so close will know */ 136 #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */ 137 #define NQNFSWRITE 0x0040 /* Write lease */ 138 #define NQNFSEVICTED 0x0080 /* Has been evicted */ 139 #define NACC 0x0100 /* Special file accessed */ 140 #define NUPD 0x0200 /* Special file updated */ 141 #define NCHG 0x0400 /* Special file times changed */ 142 143 /* 144 * Convert between nfsnode pointers and vnode pointers 145 */ 146 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 147 #define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 148 149 /* 150 * Queue head for nfsiod's 151 */ 152 TAILQ_HEAD(, buf) nfs_bufq; 153 154 #ifdef _KERNEL 155 /* 156 * Prototypes for NFS vnode operations 157 */ 158 int nfs_lookup __P((void *)); 159 int nfs_create __P((void *)); 160 int nfs_mknod __P((void *)); 161 int nfs_open __P((void *)); 162 int nfs_close __P((void *)); 163 int nfsspec_close __P((void *)); 164 int nfsfifo_close __P((void *)); 165 int nfs_access __P((void *)); 166 int nfsspec_access __P((void *)); 167 int nfs_getattr __P((void *)); 168 int nfs_setattr __P((void *)); 169 int nfs_read __P((void *)); 170 int nfs_write __P((void *)); 171 #define nfs_lease_check ((int (*) __P((void *)))nullop) 172 #define nqnfs_vop_lease_check lease_check 173 int nfsspec_read __P((void *)); 174 int nfsspec_write __P((void *)); 175 int nfsfifo_read __P((void *)); 176 int nfsfifo_write __P((void *)); 177 #define nfs_ioctl ((int (*) __P((void *)))enoioctl) 178 #define nfs_select ((int (*) __P((void *)))seltrue) 179 #define nfs_revoke vop_revoke 180 int nfs_mmap __P((void *)); 181 int nfs_fsync __P((void *)); 182 #define nfs_seek ((int (*) __P((void *)))nullop) 183 int nfs_remove __P((void *)); 184 int nfs_link __P((void *)); 185 int nfs_rename __P((void *)); 186 int nfs_mkdir __P((void *)); 187 int nfs_rmdir __P((void *)); 188 int nfs_symlink __P((void *)); 189 int nfs_readdir __P((void *)); 190 int nfs_readlink __P((void *)); 191 int nfs_abortop __P((void *)); 192 int nfs_inactive __P((void *)); 193 int nfs_reclaim __P((void *)); 194 #define nfs_lock ((int (*) __P((void *)))vop_nolock) 195 #define nfs_unlock ((int (*) __P((void *)))vop_nounlock) 196 #define nfs_islocked ((int (*) __P((void *)))vop_noislocked) 197 int nfs_bmap __P((void *)); 198 int nfs_strategy __P((void *)); 199 int nfs_print __P((void *)); 200 int nfs_pathconf __P((void *)); 201 int nfs_advlock __P((void *)); 202 int nfs_blkatoff __P((void *)); 203 int nfs_bwrite __P((void *)); 204 int nfs_vget __P((struct mount *, ino_t, struct vnode **)); 205 int nfs_valloc __P((void *)); 206 #define nfs_reallocblks \ 207 ((int (*) __P((void *)))eopnotsupp) 208 int nfs_vfree __P((void *)); 209 int nfs_truncate __P((void *)); 210 int nfs_update __P((void *)); 211 212 /* other stuff */ 213 int nfs_removeit __P((struct sillyrename *)); 214 int nfs_nget __P((struct mount *,nfsfh_t *,int,struct nfsnode **)); 215 int nfs_lookitup __P((struct vnode *,char *,int,struct ucred *,struct proc *,struct nfsnode **)); 216 int nfs_sillyrename __P((struct vnode *,struct vnode *,struct componentname *)); 217 nfsuint64 *nfs_getcookie __P((struct nfsnode *, off_t, int)); 218 void nfs_invaldir __P((struct vnode *)); 219 220 extern int (**nfsv2_vnodeop_p) __P((void *)); 221 222 #endif /* _KERNEL */ 223 224 #endif 225