/* $OpenBSD: nfsnode.h,v 1.22 2004/08/03 17:11:48 marius Exp $ */ /* $NetBSD: nfsnode.h,v 1.16 1996/02/18 11:54:04 fvdl 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. 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 <nfs/nfs.h> #endif #include <sys/rwlock.h> /* * 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]; }; /* * This structure is used to save the logical directory offset to * NFS cookie mappings. * The mappings are stored in a list headed * by n_cookies, as required. * There is one mapping for each NFS_DIRBLKSIZ bytes of directory information * stored in increasing logical offset byte order. */ #define NFSNUMCOOKIES 31 struct nfsdmap { LIST_ENTRY(nfsdmap) ndm_list; int ndm_eocookie; nfsuint64 ndm_cookies[NFSNUMCOOKIES]; }; /* * 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) * If this structure exceeds 256 bytes (it is currently 256 using 4.4BSD-Lite * type definitions), file handles of > 32 bytes should probably be split out * into a separate MALLOC()'d data structure. (Reduce the size of nfsfh_t by * changing the definition in sys/mount.h of NFS_SMALLFH.) * NB: Hopefully the current order of the fields is such that everything will * be well aligned and, therefore, tightly packed. */ struct nfsnode { LIST_ENTRY(nfsnode) n_hash; /* Hash chain */ CIRCLEQ_ENTRY(nfsnode) n_timer; /* Nqnfs timer chain */ 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 */ struct vattr n_vattr; /* Vnode attribute cache */ time_t n_attrstamp; /* Attr. cache timestamp */ time_t n_mtime; /* Prev modify time. */ time_t n_ctime; /* Prev create time. */ time_t n_expiry; /* Lease expiry time */ nfsfh_t *n_fhp; /* NFS File Handle */ struct vnode *n_vnode; /* associated vnode */ struct lockf *n_lockf; /* Locking record of file */ int n_error; /* Save write error value */ union { struct timespec nf_atim; /* Special file times */ nfsuint64 nd_cookieverf; /* Cookie verifier (dir only) */ } n_un1; union { struct timespec nf_mtim; off_t nd_direof; /* Dir. EOF offset cache */ } n_un2; union { struct sillyrename *nf_silly; /* Ptr to silly rename struct */ LIST_HEAD(, nfsdmap) nd_cook; /* cookies */ } n_un3; short n_fhsize; /* size in bytes, of fh */ short n_flag; /* Flag for locking.. */ nfsfh_t n_fh; /* Small File Handle */ struct ucred *n_rcred; struct ucred *n_wcred; 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 rwlock n_commitlock; /* Serialize commits */ int n_commitflags; }; /* * 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_cookies n_un3.nd_cook /* * 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 NACC 0x0100 /* Special file accessed */ #define NUPD 0x0200 /* Special file updated */ #define NCHG 0x0400 /* Special file times changed */ /* * 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 TAILQ_HEAD(nfs_bufqhead, buf) nfs_bufq; #ifdef _KERNEL /* * Prototypes for NFS vnode operations */ int nfs_lookup(void *); int nfs_create(void *); int nfs_mknod(void *); int nfs_open(void *); int nfs_close(void *); int nfsspec_close(void *); int nfsfifo_close(void *); int nfs_access(void *); int nfsspec_access(void *); int nfs_getattr(void *); int nfs_setattr(void *); int nfs_read(void *); int nfs_write(void *); #define nfs_lease_check ((int (*)(void *))nullop) #define nqnfs_vop_lease_check lease_check int nfsspec_read(void *); int nfsspec_write(void *); int nfsfifo_read(void *); int nfsfifo_write(void *); #define nfs_ioctl ((int (*)(void *))enoioctl) int nfs_poll(void *); #define nfs_revoke vop_generic_revoke int nfs_fsync(void *); int nfs_remove(void *); int nfs_link(void *); int nfs_rename(void *); int nfs_mkdir(void *); int nfs_rmdir(void *); int nfs_symlink(void *); int nfs_readdir(void *); int nfs_readlink(void *); int nfs_inactive(void *); int nfs_reclaim(void *); int nfsfifo_reclaim(void *); #define nfs_lock ((int (*)(void *))vop_generic_lock) #define nfs_unlock ((int (*)(void *))vop_generic_unlock) #define nfs_islocked ((int (*)(void *))vop_generic_islocked) int nfs_bmap(void *); int nfs_strategy(void *); int nfs_print(void *); int nfs_pathconf(void *); int nfs_advlock(void *); int nfs_bwrite(void *); int nfs_vget(struct mount *, ino_t, struct vnode **); #define nfs_reallocblks \ ((int (*)(void *))eopnotsupp) /* other stuff */ int nfs_removeit(struct sillyrename *); int nfs_nget(struct mount *,nfsfh_t *,int,struct nfsnode **); int nfs_lookitup(struct vnode *,char *,int,struct ucred *,struct proc *,struct nfsnode **); int nfs_sillyrename(struct vnode *,struct vnode *,struct componentname *); extern int (**nfsv2_vnodeop_p)(void *); #endif /* _KERNEL */ #endif