1139823Simp/*- 21541Srgrimes * Copyright (c) 1989, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * This code is derived from software contributed to Berkeley by 61541Srgrimes * Rick Macklem at The University of Guelph. 71541Srgrimes * 81541Srgrimes * Redistribution and use in source and binary forms, with or without 91541Srgrimes * modification, are permitted provided that the following conditions 101541Srgrimes * are met: 111541Srgrimes * 1. Redistributions of source code must retain the above copyright 121541Srgrimes * notice, this list of conditions and the following disclaimer. 131541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141541Srgrimes * notice, this list of conditions and the following disclaimer in the 151541Srgrimes * documentation and/or other materials provided with the distribution. 161541Srgrimes * 4. Neither the name of the University nor the names of its contributors 171541Srgrimes * may be used to endorse or promote products derived from this software 181541Srgrimes * without specific prior written permission. 191541Srgrimes * 201541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301541Srgrimes * SUCH DAMAGE. 311541Srgrimes * 3222521Sdyson * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95 3350477Speter * $FreeBSD$ 341541Srgrimes */ 351541Srgrimes 3683651Speter#ifndef _NFSCLIENT_NFSNODE_H_ 3783651Speter#define _NFSCLIENT_NFSNODE_H_ 3822521Sdyson 39224604Srmacklem#include <sys/_task.h> 4083651Speter#if !defined(_NFSCLIENT_NFS_H_) && !defined(_KERNEL) 419336Sdfr#include <nfs/nfs.h> 429336Sdfr#endif 439336Sdfr 441541Srgrimes/* 451541Srgrimes * Silly rename structure that hangs off the nfsnode until the name 461541Srgrimes * can be removed by nfs_inactive() 471541Srgrimes */ 481541Srgrimesstruct sillyrename { 49224604Srmacklem struct task s_task; 501541Srgrimes struct ucred *s_cred; 511541Srgrimes struct vnode *s_dvp; 52122698Salfred int (*s_removeit)(struct sillyrename *sp); 531541Srgrimes long s_namlen; 54138919Sps char s_name[32]; 551541Srgrimes}; 561541Srgrimes 571541Srgrimes/* 589336Sdfr * This structure is used to save the logical directory offset to 599336Sdfr * NFS cookie mappings. 609336Sdfr * The mappings are stored in a list headed 619336Sdfr * by n_cookies, as required. 629336Sdfr * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information 639336Sdfr * stored in increasing logical offset byte order. 649336Sdfr */ 659336Sdfr#define NFSNUMCOOKIES 31 669336Sdfr 679336Sdfrstruct nfsdmap { 6860938Sjake LIST_ENTRY(nfsdmap) ndm_list; 699336Sdfr int ndm_eocookie; 70122698Salfred union { 71122698Salfred nfsuint64 ndmu3_cookies[NFSNUMCOOKIES]; 72122698Salfred uint64_t ndmu4_cookies[NFSNUMCOOKIES]; 73122698Salfred } ndm_un1; 749336Sdfr}; 759336Sdfr 76122698Salfred#define ndm_cookies ndm_un1.ndmu3_cookies 77122698Salfred#define ndm4_cookies ndm_un1.ndmu4_cookies 78122698Salfred 79190176Sjhbstruct nfs_accesscache { 80190176Sjhb u_int32_t mode; /* ACCESS mode cache */ 81190176Sjhb uid_t uid; /* credentials having mode */ 82190176Sjhb time_t stamp; /* mode cache timestamp */ 83190176Sjhb}; 84190176Sjhb 859336Sdfr/* 861541Srgrimes * The nfsnode is the nfs equivalent to ufs's inode. Any similarity 871541Srgrimes * is purely coincidental. 881541Srgrimes * There is a unique nfsnode allocated for each active file, 891541Srgrimes * each current directory, each mounted-on file, text file, and the root. 901541Srgrimes * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) 919336Sdfr * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite 929336Sdfr * type definitions), file handles of > 32 bytes should probably be split out 939336Sdfr * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by 9436526Speter * changing the definition in nfsproto.h of NFS_SMALLFH.) 959336Sdfr * NB: Hopefully the current order of the fields is such that everything will 969336Sdfr * be well aligned and, therefore, tightly packed. 971541Srgrimes */ 981541Srgrimesstruct nfsnode { 99158739Smohans struct mtx n_mtx; /* Protects all of these members */ 1009336Sdfr u_quad_t n_size; /* Current size of file */ 1019336Sdfr u_quad_t n_brev; /* Modify rev when cached */ 1029336Sdfr u_quad_t n_lrev; /* Modify rev for lease */ 1039336Sdfr struct vattr n_vattr; /* Vnode attribute cache */ 1049336Sdfr time_t n_attrstamp; /* Attr. cache timestamp */ 105190176Sjhb struct nfs_accesscache n_accesscache[NFS_ACCESSCACHESIZE]; 106138473Sps struct timespec n_mtime; /* Prev modify time. */ 107233285Sjhb struct timespec n_unused0; 108233285Sjhb struct timespec n_unused1; 109233285Sjhb int n_unused2; 1109336Sdfr nfsfh_t *n_fhp; /* NFS File Handle */ 1119336Sdfr struct vnode *n_vnode; /* associated vnode */ 112122698Salfred struct vnode *n_dvp; /* parent vnode */ 1139336Sdfr int n_error; /* Save write error value */ 1149336Sdfr union { 1159336Sdfr struct timespec nf_atim; /* Special file times */ 1169336Sdfr nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ 117122698Salfred u_char nd4_cookieverf[NFSX_V4VERF]; 1189336Sdfr } n_un1; 1199336Sdfr union { 1209336Sdfr struct timespec nf_mtim; 1219336Sdfr off_t nd_direof; /* Dir. EOF offset cache */ 1229336Sdfr } n_un2; 1239336Sdfr union { 1249336Sdfr struct sillyrename *nf_silly; /* Ptr to silly rename struct */ 12560938Sjake LIST_HEAD(, nfsdmap) nd_cook; /* cookies */ 1269336Sdfr } n_un3; 1279336Sdfr short n_fhsize; /* size in bytes, of fh */ 1289336Sdfr short n_flag; /* Flag for locking.. */ 1299336Sdfr nfsfh_t n_fh; /* Small File Handle */ 130122953Salfred u_char *n_name; /* leaf name, for v4 OPEN op */ 131122698Salfred uint32_t n_namelen; 132138899Sps int n_directio_opens; 133158739Smohans int n_directio_asyncwr; 134236096Srmacklem struct ucred *n_writecred; /* Cred. for putpages */ 1351541Srgrimes}; 1361541Srgrimes 1379336Sdfr#define n_atim n_un1.nf_atim 1389336Sdfr#define n_mtim n_un2.nf_mtim 1399336Sdfr#define n_sillyrename n_un3.nf_silly 1409336Sdfr#define n_cookieverf n_un1.nd_cookieverf 141122698Salfred#define n4_cookieverf n_un1.nd4_cookieverf 1429336Sdfr#define n_direofoffset n_un2.nd_direof 1439336Sdfr#define n_cookies n_un3.nd_cook 1449336Sdfr 1451541Srgrimes/* 1461541Srgrimes * Flags for n_flag 1471541Srgrimes */ 148158739Smohans#define NFSYNCWAIT 0x0002 /* fsync waiting for all directio async writes 149158739Smohans to drain */ 1501541Srgrimes#define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ 1511541Srgrimes#define NWRITEERR 0x0008 /* Flag write errors so close will know */ 15283651Speter/* 0x20, 0x40, 0x80 free */ 1531541Srgrimes#define NACC 0x0100 /* Special file accessed */ 1541541Srgrimes#define NUPD 0x0200 /* Special file updated */ 1551541Srgrimes#define NCHG 0x0400 /* Special file times changed */ 156122698Salfred#define NCREATED 0x0800 /* Opened by nfs_create() */ 157122698Salfred#define NTRUNCATE 0x1000 /* Opened by nfs_setattr() */ 158128263Speadar#define NSIZECHANGED 0x2000 /* File size has changed: need cache inval */ 159138899Sps#define NNONCACHE 0x4000 /* Node marked as noncacheable */ 160158739Smohans#define NDIRCOOKIELK 0x8000 /* Lock to serialize access to directory cookies */ 1611541Srgrimes 1621541Srgrimes/* 1631541Srgrimes * Convert between nfsnode pointers and vnode pointers 1641541Srgrimes */ 1651541Srgrimes#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) 1661541Srgrimes#define NFSTOV(np) ((struct vnode *)(np)->n_vnode) 1671541Srgrimes 168138473Sps#define NFS_TIMESPEC_COMPARE(T1, T2) (((T1)->tv_sec != (T2)->tv_sec) || ((T1)->tv_nsec != (T2)->tv_nsec)) 169138473Sps 1701541Srgrimes/* 171214026Skib * NFS iod threads can be in one of these two states once spawned. 172203072Srmacklem * NFSIOD_NOT_AVAILABLE - Cannot be assigned an I/O operation at this time. 173203072Srmacklem * NFSIOD_AVAILABLE - Available to be assigned an I/O operation. 174203072Srmacklem */ 175203072Srmacklemenum nfsiod_state { 176203072Srmacklem NFSIOD_NOT_AVAILABLE = 0, 177203072Srmacklem NFSIOD_AVAILABLE = 1, 178203072Srmacklem}; 179203072Srmacklem 180203072Srmacklem/* 1811541Srgrimes * Queue head for nfsiod's 1821541Srgrimes */ 18360938Sjakeextern TAILQ_HEAD(nfs_bufq, buf) nfs_bufq; 184203072Srmacklemextern enum nfsiod_state nfs_iodwant[NFS_MAXASYNCDAEMON]; 18519449Sdfrextern struct nfsmount *nfs_iodmount[NFS_MAXASYNCDAEMON]; 1861541Srgrimes 18755206Speter#if defined(_KERNEL) 18854605Sdillon 189138290Sphkextern struct vop_vector nfs_fifoops; 190138290Sphkextern struct vop_vector nfs_vnodeops; 191136927Sphkextern struct buf_ops buf_ops_nfs; 192122698Salfred 1931541Srgrimes/* 1941541Srgrimes * Prototypes for NFS vnode operations 1951541Srgrimes */ 19683651Speterint nfs_getpages(struct vop_getpages_args *); 19783651Speterint nfs_putpages(struct vop_putpages_args *); 19883651Speterint nfs_write(struct vop_write_args *); 19983651Speterint nfs_inactive(struct vop_inactive_args *); 20083651Speterint nfs_reclaim(struct vop_reclaim_args *); 2013305Sphk 2023305Sphk/* other stuff */ 20383651Speterint nfs_removeit(struct sillyrename *); 204162288Smohansint nfs_nget(struct mount *, nfsfh_t *, int, struct nfsnode **, int flags); 20583651Speternfsuint64 *nfs_getcookie(struct nfsnode *, off_t, int); 20683651Spetervoid nfs_invaldir(struct vnode *); 207176134Sattilioint nfs_upgrade_vnlock(struct vnode *vp); 208176134Sattiliovoid nfs_downgrade_vnlock(struct vnode *vp, int old_lock); 209158739Smohansvoid nfs_printf(const char *fmt, ...); 2103305Sphk 211158739Smohansvoid nfs_dircookie_lock(struct nfsnode *np); 212158739Smohansvoid nfs_dircookie_unlock(struct nfsnode *np); 213158739Smohans 21455206Speter#endif /* _KERNEL */ 2152175Spaul 2162175Spaul#endif 217