nfsnode.h revision 1.44
1 /* $NetBSD: nfsnode.h,v 1.44 2003/09/26 11:51:53 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95 35 */ 36 37 38 #ifndef _NFS_NFSNODE_H_ 39 #define _NFS_NFSNODE_H_ 40 41 #ifndef _NFS_NFS_H_ 42 #include <nfs/nfs.h> 43 #endif 44 #include <miscfs/genfs/genfs.h> 45 #include <miscfs/genfs/genfs_node.h> 46 47 /* 48 * Silly rename structure that hangs off the nfsnode until the name 49 * can be removed by nfs_inactive() 50 */ 51 struct sillyrename { 52 struct ucred *s_cred; 53 struct vnode *s_dvp; 54 long s_namlen; 55 char s_name[20]; 56 }; 57 58 /* 59 * Definitions for the directory cache. Because directory cookies 60 * are an opaque 64 bit entity, we need to provide some sort of 61 * mapping between cookies and logical blocknumbers. Also, 62 * we should store the cookies from the server somewhere, 63 * to be able to satisfy VOP_READDIR requests for cookies. 64 * We can't store the cookies in the dirent structure, as some 65 * other systems. 66 * 67 * Each offset is hashed into a per-nfsnode hashtable. An entry 68 * found therein contains information about the (faked up) 69 * logical blocknumber, and also a pointer to a buffer where 70 * the cookies are stored. 71 */ 72 73 extern u_long nfsdirhashmask; 74 75 LIST_HEAD(nfsdirhashhead, nfsdircache); 76 TAILQ_HEAD(nfsdirchainhead, nfsdircache); 77 78 struct nfsdircache { 79 off_t dc_cookie; /* Own offset (key) */ 80 off_t dc_blkcookie; /* Offset of block we're in */ 81 LIST_ENTRY(nfsdircache) dc_hash; /* Hash chain */ 82 TAILQ_ENTRY(nfsdircache) dc_chain; /* Least recently entered chn */ 83 u_int32_t dc_cookie32; /* Key for 64<->32 xlate case */ 84 daddr_t dc_blkno; /* Number of block we're in */ 85 int dc_entry; /* Entry number within block */ 86 }; 87 88 89 /* 90 * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 91 * is purely coincidental. 92 * There is a unique nfsnode allocated for each active file, 93 * each current directory, each mounted-on file, text file, and the root. 94 * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 95 */ 96 struct nfsnode { 97 struct genfs_node n_gnode; 98 u_quad_t n_size; /* Current size of file */ 99 u_quad_t n_brev; /* Modify rev when cached */ 100 u_quad_t n_lrev; /* Modify rev for lease */ 101 union { 102 struct timespec nf_mtim; 103 off_t nd_direof; /* Dir. EOF offset cache */ 104 } n_un2; 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 sillyrename *nf_silly; /* Ptr to silly rename struct */ 111 struct nfsdirhashhead *nd_dircache; 112 } n_un3; 113 LIST_ENTRY(nfsnode) n_hash; /* Hash chain */ 114 CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */ 115 struct nfsdirchainhead n_dirchain; /* Chain of dir cookies */ 116 nfsfh_t *n_fhp; /* NFS File Handle */ 117 struct vattr *n_vattr; /* Vnode attribute cache */ 118 struct vnode *n_vnode; /* associated vnode */ 119 struct lockf *n_lockf; /* Locking record of file */ 120 unsigned *n_dirgens; /* 32<->64bit xlate gen. no. */ 121 time_t n_attrstamp; /* Attr. cache timestamp */ 122 struct timespec n_mtime; /* Prev modify time. */ 123 time_t n_ctime; /* Prev create time. */ 124 struct timespec n_nctime; /* Last neg cache entry (dir) */ 125 time_t n_expiry; /* Lease expiry time */ 126 daddr_t n_dblkno; /* To keep faked dir blkno */ 127 unsigned n_dircachesize; /* Size of dir cookie cache */ 128 int n_error; /* Save write error value */ 129 short n_fhsize; /* size in bytes, of fh */ 130 short n_flag; /* Flag for locking.. */ 131 nfsfh_t n_fh; /* Small File Handle */ 132 time_t n_accstamp; /* Access cache timestamp */ 133 uid_t n_accuid; /* Last access requester */ 134 int n_accmode; /* Mode last requested */ 135 int n_accerror; /* Error last returned */ 136 off_t n_pushedlo; /* 1st blk in commited range */ 137 off_t n_pushedhi; /* Last block in range */ 138 off_t n_pushlo; /* 1st block in commit range */ 139 off_t n_pushhi; /* Last block in range */ 140 struct lock n_commitlock; /* Serialize commits XXX */ 141 int n_commitflags; 142 struct ucred *n_rcred; 143 struct ucred *n_wcred; 144 }; 145 LIST_HEAD(nfsnodehashhead, nfsnode); 146 147 /* 148 * Values for n_commitflags 149 */ 150 #define NFS_COMMIT_PUSH_VALID 0x0001 /* push range valid */ 151 #define NFS_COMMIT_PUSHED_VALID 0x0002 /* pushed range valid */ 152 153 #define n_atim n_un1.nf_atim 154 #define n_mtim n_un2.nf_mtim 155 #define n_sillyrename n_un3.nf_silly 156 #define n_cookieverf n_un1.nd_cookieverf 157 #define n_direofoffset n_un2.nd_direof 158 #define n_dircache n_un3.nd_dircache 159 160 /* 161 * Flags for n_flag 162 */ 163 #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ 164 #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ 165 #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 166 #define NWRITEERR 0x0008 /* Flag write errors so close will know */ 167 #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */ 168 #define NQNFSWRITE 0x0040 /* Write lease */ 169 #define NQNFSEVICTED 0x0080 /* Has been evicted */ 170 #define NACC 0x0100 /* Special file accessed */ 171 #define NUPD 0x0200 /* Special file updated */ 172 #define NCHG 0x0400 /* Special file times changed */ 173 #define NTRUNCDELAYED 0x1000 /* Should be truncated later */ 174 #define NREMOVED 0x2000 /* Has been removed */ 175 176 /* 177 * Convert between nfsnode pointers and vnode pointers 178 */ 179 #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 180 #define NFSTOV(np) ((np)->n_vnode) 181 182 /* 183 * Per-nfsiod datas 184 */ 185 struct nfs_iod { 186 struct simplelock nid_slock; 187 struct proc *nid_proc; 188 struct proc *nid_want; 189 struct nfsmount *nid_mount; 190 }; 191 extern struct nfs_iod nfs_asyncdaemon[NFS_MAXASYNCDAEMON]; 192 193 #ifdef _KERNEL 194 /* 195 * Prototypes for NFS vnode operations 196 */ 197 int nfs_lookup __P((void *)); 198 int nfs_create __P((void *)); 199 int nfs_mknod __P((void *)); 200 int nfs_open __P((void *)); 201 int nfs_close __P((void *)); 202 int nfsspec_close __P((void *)); 203 int nfsfifo_close __P((void *)); 204 int nfs_access __P((void *)); 205 int nfsspec_access __P((void *)); 206 int nfs_getattr __P((void *)); 207 int nfs_setattr __P((void *)); 208 int nfs_read __P((void *)); 209 int nfs_write __P((void *)); 210 #define nfs_lease_check genfs_nullop 211 int nfsspec_read __P((void *)); 212 int nfsspec_write __P((void *)); 213 int nfsfifo_read __P((void *)); 214 int nfsfifo_write __P((void *)); 215 #define nfs_ioctl genfs_enoioctl 216 #define nfs_poll genfs_poll 217 #define nfs_revoke genfs_revoke 218 #define nfs_mmap genfs_mmap 219 int nfs_fsync __P((void *)); 220 #define nfs_seek genfs_seek 221 int nfs_remove __P((void *)); 222 int nfs_link __P((void *)); 223 int nfs_rename __P((void *)); 224 int nfs_mkdir __P((void *)); 225 int nfs_rmdir __P((void *)); 226 int nfs_symlink __P((void *)); 227 int nfs_readdir __P((void *)); 228 int nfs_readlink __P((void *)); 229 #define nfs_abortop genfs_abortop 230 int nfs_inactive __P((void *)); 231 int nfs_reclaim __P((void *)); 232 #define nfs_lock genfs_lock 233 int nfs_unlock __P((void *)); 234 #define nfs_islocked genfs_islocked 235 int nfs_bmap __P((void *)); 236 int nfs_strategy __P((void *)); 237 int nfs_print __P((void *)); 238 int nfs_pathconf __P((void *)); 239 int nfs_advlock __P((void *)); 240 #define nfs_blkatoff genfs_eopnotsupp 241 int nfs_bwrite __P((void *)); 242 #define nfs_valloc genfs_eopnotsupp 243 #define nfs_reallocblks genfs_eopnotsupp 244 #define nfs_vfree genfs_nullop 245 int nfs_truncate __P((void *)); 246 int nfs_update __P((void *)); 247 int nfs_getpages __P((void *)); 248 int nfs_putpages __P((void *)); 249 int nfs_gop_write(struct vnode *, struct vm_page **, int, int); 250 int nfs_kqfilter __P((void *)); 251 252 extern int (**nfsv2_vnodeop_p) __P((void *)); 253 254 #endif /* _KERNEL */ 255 256 #endif 257
Indexes created Thu Sep 25 08:09:54 GMT 2025