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176 lines
7.2 KiB
C
176 lines
7.2 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)nfsnode.h 8.4 (Berkeley) 2/13/94
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* $Id: nfsnode.h,v 1.6 1994/09/22 19:38:29 wollman Exp $
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*/
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#ifndef _NFS_NFSNODE_H_
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#define _NFS_NFSNODE_H_
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/*
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* Silly rename structure that hangs off the nfsnode until the name
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* can be removed by nfs_inactive()
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*/
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struct sillyrename {
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struct ucred *s_cred;
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struct vnode *s_dvp;
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long s_namlen;
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char s_name[20];
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};
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/*
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* The nfsnode is the nfs equivalent to ufs's inode. Any similarity
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* is purely coincidental.
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* There is a unique nfsnode allocated for each active file,
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* each current directory, each mounted-on file, text file, and the root.
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* An nfsnode is 'named' by its file handle. (nget/nfs_node.c)
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*/
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struct nfsnode {
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struct nfsnode *n_forw; /* hash, forward */
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struct nfsnode **n_back; /* hash, backward */
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nfsv2fh_t n_fh; /* NFS File Handle */
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long n_flag; /* Flag for locking.. */
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struct vnode *n_vnode; /* vnode associated with this node */
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struct vattr n_vattr; /* Vnode attribute cache */
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time_t n_attrstamp; /* Time stamp for cached attributes */
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struct sillyrename *n_sillyrename; /* Ptr to silly rename struct */
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u_quad_t n_size; /* Current size of file */
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struct lockf *n_lockf; /* Locking record of file */
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int n_error; /* Save write error value */
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u_long n_direofoffset; /* Dir. EOF offset cache */
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time_t n_mtime; /* Prev modify time. */
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time_t n_ctime; /* Prev create time. */
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u_quad_t n_brev; /* Modify rev when cached */
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u_quad_t n_lrev; /* Modify rev for lease */
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time_t n_expiry; /* Lease expiry time */
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struct nfsnode *n_tnext; /* Nqnfs timer chain */
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struct nfsnode *n_tprev;
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struct sillyrename n_silly; /* Silly rename struct */
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struct timeval n_atim; /* Special file times */
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struct timeval n_mtim;
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};
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/*
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* Flags for n_flag
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*/
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#define NFLUSHWANT 0x0001 /* Want wakeup from a flush in prog. */
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#define NFLUSHINPROG 0x0002 /* Avoid multiple calls to vinvalbuf() */
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#define NMODIFIED 0x0004 /* Might have a modified buffer in bio */
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#define NWRITEERR 0x0008 /* Flag write errors so close will know */
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#define NQNFSNONCACHE 0x0020 /* Non-cachable lease */
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#define NQNFSWRITE 0x0040 /* Write lease */
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#define NQNFSEVICTED 0x0080 /* Has been evicted */
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#define NACC 0x0100 /* Special file accessed */
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#define NUPD 0x0200 /* Special file updated */
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#define NCHG 0x0400 /* Special file times changed */
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/*
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* Convert between nfsnode pointers and vnode pointers
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*/
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#define VTONFS(vp) ((struct nfsnode *)(vp)->v_data)
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#define NFSTOV(np) ((struct vnode *)(np)->n_vnode)
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/*
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* Queue head for nfsiod's
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*/
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TAILQ_HEAD(nfsbufs, buf) nfs_bufq;
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#ifdef KERNEL
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/*
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* Prototypes for NFS vnode operations
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*/
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int nfs_lookup __P((struct vop_lookup_args *));
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int nfs_create __P((struct vop_create_args *));
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int nfs_mknod __P((struct vop_mknod_args *));
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int nfs_open __P((struct vop_open_args *));
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int nfs_close __P((struct vop_close_args *));
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int nfsspec_close __P((struct vop_close_args *));
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int nfsfifo_close __P((struct vop_close_args *));
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int nfs_access __P((struct vop_access_args *));
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int nfsspec_access __P((struct vop_access_args *));
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int nfs_getattr __P((struct vop_getattr_args *));
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int nfs_setattr __P((struct vop_setattr_args *));
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int nfs_read __P((struct vop_read_args *));
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int nfs_write __P((struct vop_write_args *));
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int nfsspec_read __P((struct vop_read_args *));
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int nfsspec_write __P((struct vop_write_args *));
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int nfsfifo_read __P((struct vop_read_args *));
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int nfsfifo_write __P((struct vop_write_args *));
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#define nfs_ioctl ((int (*) __P((struct vop_ioctl_args *)))enoioctl)
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#define nfs_select ((int (*) __P((struct vop_select_args *)))seltrue)
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int nfs_mmap __P((struct vop_mmap_args *));
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int nfs_fsync __P((struct vop_fsync_args *));
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#define nfs_seek ((int (*) __P((struct vop_seek_args *)))nullop)
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int nfs_remove __P((struct vop_remove_args *));
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int nfs_link __P((struct vop_link_args *));
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int nfs_rename __P((struct vop_rename_args *));
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int nfs_mkdir __P((struct vop_mkdir_args *));
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int nfs_rmdir __P((struct vop_rmdir_args *));
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int nfs_symlink __P((struct vop_symlink_args *));
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int nfs_readdir __P((struct vop_readdir_args *));
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int nfs_readlink __P((struct vop_readlink_args *));
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int nfs_abortop __P((struct vop_abortop_args *));
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int nfs_inactive __P((struct vop_inactive_args *));
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int nfs_reclaim __P((struct vop_reclaim_args *));
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int nfs_lock __P((struct vop_lock_args *));
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int nfs_unlock __P((struct vop_unlock_args *));
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int nfs_bmap __P((struct vop_bmap_args *));
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int nfs_strategy __P((struct vop_strategy_args *));
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int nfs_print __P((struct vop_print_args *));
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int nfs_islocked __P((struct vop_islocked_args *));
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int nfs_pathconf __P((struct vop_pathconf_args *));
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int nfs_advlock __P((struct vop_advlock_args *));
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int nfs_blkatoff __P((struct vop_blkatoff_args *));
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int nfs_vget __P((struct mount *, ino_t, struct vnode **));
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int nfs_valloc __P((struct vop_valloc_args *));
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#define nfs_reallocblks \
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((int (*) __P((struct vop_reallocblks_args *)))eopnotsupp)
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int nfs_vfree __P((struct vop_vfree_args *));
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int nfs_truncate __P((struct vop_truncate_args *));
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int nfs_update __P((struct vop_update_args *));
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int nfs_bwrite __P((struct vop_bwrite_args *));
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/* other stuff */
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int nfs_removeit __P((struct sillyrename *));
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int nfs_nget __P((struct mount *,nfsv2fh_t *,struct nfsnode **));
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int nfs_lookitup __P((struct sillyrename *,nfsv2fh_t *,struct proc *));
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int nfs_sillyrename __P((struct vnode *,struct vnode *,struct componentname *));
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#endif /* KERNEL */
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#endif
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