/* $NetBSD: nfsnode.h,v 1.37 2002/12/01 23:02:11 matt Exp $ */ /* * Copyright (c) 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rick Macklem at The University of Guelph. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)nfsnode.h 8.9 (Berkeley) 5/14/95 */ #ifndef _NFS_NFSNODE_H_ #define _NFS_NFSNODE_H_ #ifndef _NFS_NFS_H_ #include #endif #include #include /* * Silly rename structure that hangs off the nfsnode until the name * can be removed by nfs_inactive() */ struct sillyrename { struct ucred *s_cred; struct vnode *s_dvp; long s_namlen; char s_name[20]; }; /* * Definitions for the directory cache. Because directory cookies * are an opaque 64 bit entity, we need to provide some sort of * mapping between cookies and logical blocknumbers. Also, * we should store the cookies from the server somewhere, * to be able to satisfy VOP_READDIR requests for cookies. * We can't store the cookies in the dirent structure, as some * other systems. * * Each offset is hashed into a per-nfsnode hashtable. An entry * found therein contains information about the (faked up) * logical blocknumber, and also a pointer to a buffer where * the cookies are stored. */ extern u_long nfsdirhashmask; LIST_HEAD(nfsdirhashhead, nfsdircache); TAILQ_HEAD(nfsdirchainhead, nfsdircache); struct nfsdircache { off_t dc_cookie; /* Own offset (key) */ off_t dc_blkcookie; /* Offset of block we're in */ LIST_ENTRY(nfsdircache) dc_hash; /* Hash chain */ TAILQ_ENTRY(nfsdircache) dc_chain; /* Least recently entered chn */ u_int32_t dc_cookie32; /* Key for 64<->32 xlate case */ daddr_t dc_blkno; /* Number of block we're in */ int dc_entry; /* Entry number within block */ }; /* * The nfsnode is the nfs equivalent to ufs's inode. Any similarity * is purely coincidental. * There is a unique nfsnode allocated for each active file, * each current directory, each mounted-on file, text file, and the root. * An nfsnode is 'named' by its file handle. (nget/nfs_node.c) */ struct nfsnode { struct genfs_node n_gnode; u_quad_t n_size; /* Current size of file */ u_quad_t n_brev; /* Modify rev when cached */ u_quad_t n_lrev; /* Modify rev for lease */ union { struct timespec nf_mtim; off_t nd_direof; /* Dir. EOF offset cache */ } n_un2; union { struct timespec nf_atim; /* Special file times */ nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ } n_un1; union { struct sillyrename *nf_silly; /* Ptr to silly rename struct */ struct nfsdirhashhead *nd_dircache; } n_un3; LIST_ENTRY(nfsnode) n_hash; /* Hash chain */ CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */ struct nfsdirchainhead n_dirchain; /* Chain of dir cookies */ nfsfh_t *n_fhp; /* NFS File Handle */ struct vattr *n_vattr; /* Vnode attribute cache */ struct vnode *n_vnode; /* associated vnode */ struct lockf *n_lockf; /* Locking record of file */ unsigned *n_dirgens; /* 32<->64bit xlate gen. no. */ time_t n_attrstamp; /* Attr. cache timestamp */ time_t n_mtime; /* Prev modify time. */ time_t n_ctime; /* Prev create time. */ time_t n_nctime; /* Last neg cache entry (dir) */ time_t n_expiry; /* Lease expiry time */ daddr_t n_dblkno; /* To keep faked dir blkno */ unsigned n_dircachesize; /* Size of dir cookie cache */ int n_error; /* Save write error value */ short n_fhsize; /* size in bytes, of fh */ short n_flag; /* Flag for locking.. */ nfsfh_t n_fh; /* Small File Handle */ time_t n_accstamp; /* Access cache timestamp */ uid_t n_accuid; /* Last access requester */ int n_accmode; /* Mode last requested */ int n_accerror; /* Error last returned */ off_t n_pushedlo; /* 1st blk in commited range */ off_t n_pushedhi; /* Last block in range */ off_t n_pushlo; /* 1st block in commit range */ off_t n_pushhi; /* Last block in range */ struct lock n_commitlock; /* Serialize commits XXX */ int n_commitflags; struct ucred *n_rcred; struct ucred *n_wcred; }; LIST_HEAD(nfsnodehashhead, nfsnode); /* * Values for n_commitflags */ #define NFS_COMMIT_PUSH_VALID 0x0001 /* push range valid */ #define NFS_COMMIT_PUSHED_VALID 0x0002 /* pushed range valid */ #define n_atim n_un1.nf_atim #define n_mtim n_un2.nf_mtim #define n_sillyrename n_un3.nf_silly #define n_cookieverf n_un1.nd_cookieverf #define n_direofoffset n_un2.nd_direof #define n_dircache n_un3.nd_dircache /* * Flags for n_flag */ #define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */ #define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */ #define NMODIFIED 0x0004 /* Might have a modified buffer in bio */ #define NWRITEERR 0x0008 /* Flag write errors so close will know */ #define NQNFSNONCACHE 0x0020 /* Non-cachable lease */ #define NQNFSWRITE 0x0040 /* Write lease */ #define NQNFSEVICTED 0x0080 /* Has been evicted */ #define NACC 0x0100 /* Special file accessed */ #define NUPD 0x0200 /* Special file updated */ #define NCHG 0x0400 /* Special file times changed */ #define NTRUNCDELAYED 0x1000 /* Should be truncated later */ /* * Convert between nfsnode pointers and vnode pointers */ #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data) #define NFSTOV(np) ((np)->n_vnode) /* * Queue head for nfsiod's */ extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; extern struct nfsmount *nfs_iodmount[NFS_MAXASYNCDAEMON]; #ifdef _KERNEL /* * Prototypes for NFS vnode operations */ int nfs_lookup __P((void *)); int nfs_create __P((void *)); int nfs_mknod __P((void *)); int nfs_open __P((void *)); int nfs_close __P((void *)); int nfsspec_close __P((void *)); int nfsfifo_close __P((void *)); int nfs_access __P((void *)); int nfsspec_access __P((void *)); int nfs_getattr __P((void *)); int nfs_setattr __P((void *)); int nfs_read __P((void *)); int nfs_write __P((void *)); #define nfs_lease_check genfs_nullop int nfsspec_read __P((void *)); int nfsspec_write __P((void *)); int nfsfifo_read __P((void *)); int nfsfifo_write __P((void *)); #define nfs_ioctl genfs_enoioctl #define nfs_poll genfs_poll #define nfs_revoke genfs_revoke #define nfs_mmap genfs_mmap int nfs_fsync __P((void *)); #define nfs_seek genfs_seek int nfs_remove __P((void *)); int nfs_link __P((void *)); int nfs_rename __P((void *)); int nfs_mkdir __P((void *)); int nfs_rmdir __P((void *)); int nfs_symlink __P((void *)); int nfs_readdir __P((void *)); int nfs_readlink __P((void *)); #define nfs_abortop genfs_abortop int nfs_inactive __P((void *)); int nfs_reclaim __P((void *)); #define nfs_lock genfs_lock int nfs_unlock __P((void *)); #define nfs_islocked genfs_islocked int nfs_bmap __P((void *)); int nfs_strategy __P((void *)); int nfs_print __P((void *)); int nfs_pathconf __P((void *)); int nfs_advlock __P((void *)); #define nfs_blkatoff genfs_eopnotsupp int nfs_bwrite __P((void *)); #define nfs_valloc genfs_eopnotsupp #define nfs_reallocblks genfs_eopnotsupp #define nfs_vfree genfs_nullop int nfs_truncate __P((void *)); int nfs_update __P((void *)); int nfs_getpages __P((void *)); int nfs_putpages __P((void *)); int nfs_gop_write(struct vnode *, struct vm_page **, int, int); int nfs_kqfilter __P((void *)); extern int (**nfsv2_vnodeop_p) __P((void *)); #endif /* _KERNEL */ #endif