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- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
- /*
- * 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
- * FreeBSD-Id: nfsnode.h,v 1.24 1997/10/28 14:06:25 bde Exp $
- */
-
-
- #ifndef _NFS_NFSNODE_H_
- #define _NFS_NFSNODE_H_
-
- #ifndef _NFS_NFS_H_
- #include <nfs/nfs.h>
- #endif
-
- /*
- * 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 */
- u_int32_t n_mode; /* ACCESS mode cache */
- uid_t n_modeuid; /* credentials having mode */
- time_t n_modestamp; /* mode 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 */
- };
-
- #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 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 NLOCKED 0x0800 /* node is locked */
- #define NWANTED 0x0100 /* someone wants to lock */
-
- /*
- * Convert between nfsnode pointers and vnode pointers
- */
- #define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
- #define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
-
- /*
- * Queue head for nfsiod's
- */
- extern TAILQ_HEAD(nfs_bufq, buf) nfs_bufq;
- extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
- extern struct nfsmount *nfs_iodmount[NFS_MAXASYNCDAEMON];
-
- #if defined(KERNEL)
- typedef int vop_t __P((void *));
- extern vop_t **fifo_nfsv2nodeop_p;
- extern vop_t **nfsv2_vnodeop_p;
- extern vop_t **spec_nfsv2nodeop_p;
-
- /*
- * Prototypes for NFS vnode operations
- */
- int nfs_write __P((struct vop_write_args *));
- #define nfs_lease_check ((int (*) __P((struct vop_lease_args *)))nullop)
- #define nqnfs_vop_lease_check lease_check
- int nqnfs_vop_lease_check __P((struct vop_lease_args *));
- #define nfs_revoke vop_revoke
- #define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop)
- int nfs_abortop __P((struct vop_abortop_args *));
- int nfs_inactive __P((struct vop_inactive_args *));
- int nfs_reclaim __P((struct vop_reclaim_args *));
- #define nfs_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock)
- #define nfs_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock)
- #define nfs_islocked ((int (*) __P((struct vop_islocked_args *)))vop_noislocked)
- #define nfs_reallocblks \
- ((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp)
-
- /* other stuff */
- int nfs_removeit __P((struct sillyrename *));
- int nfs_nget __P((struct mount *,nfsfh_t *,int,struct nfsnode **));
- nfsuint64 *nfs_getcookie __P((struct nfsnode *, off_t, int));
- void nfs_invaldir __P((struct vnode *));
-
- #define nqnfs_lease_updatetime lease_updatetime
-
- #endif /* KERNEL */
-
- #endif
-