sys/vfs/nwfs/nwfs_node.h

   1 /*
   2  * Copyright (c) 1999, 2000 Boris Popov
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *    This product includes software developed by Boris Popov.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/sys/nwfs/nwfs_node.h,v 1.3.2.2 2000/10/25 02:28:42 bp Exp $
  33  * $DragonFly: src/sys/vfs/nwfs/nwfs_node.h,v 1.4 2005/08/16 16:27:41 joerg Exp $
  34  */
  35 #ifndef _NWFS_NODE_H_
  36 #define _NWFS_NODE_H_
  37
  38 #define NWFS_ROOT_INO   0x7ffffffd
  39 #define NWFS_ROOTVOL    "#.ROOT"
  40
  41 /* Bits for nwnode.n_flag */
  42 #define NFLUSHINPROG    0x0001
  43 #define NFLUSHWANT      0x0002          /* they should gone ... */
  44 #define NMODIFIED       0x0004          /* bogus, until async IO implemented */
  45 #define NNEW            0x0008          /* vnode has been allocated */
  46 #define NVOLUME         0x0010          /* vnode references a volume */
  47 #define NSHOULDFREE     0x0020          /* vnode should be removed from hash */
  48
  49 struct nwnode {
  50         struct lock             n_lock;         /* Keep this first */
  51         LIST_ENTRY(nwnode)      n_hash;
  52         struct vnode            *n_vnode;
  53         struct vattr            n_vattr;
  54         struct nwmount          *n_mount;
  55         time_t                  n_atime;        /* attributes cache time*/
  56         time_t                  n_ctime;
  57         time_t                  n_mtime;
  58         int                     n_flag;
  59         ncpfid                  n_parent;
  60         ncpfid                  n_fid;
  61         int                     n_refparent;
  62         u_long                  n_attr;         /* LH */
  63         u_long                  n_size;
  64         u_long                  n_dosfid;
  65         int                     opened;
  66 /*      int                     access;*/
  67         u_long                  n_origfh;
  68         ncp_fh                  n_fh;
  69         struct nw_search_seq    n_seq;
  70         u_char                  n_nmlen;
  71         u_char                  n_name[256];
  72 };
  73
  74 #define VTONW(vp)       ((struct nwnode *)(vp)->v_data)
  75 #define NWTOV(np)       ((struct vnode *)(np)->n_vnode)
  76 #define NWCMPF(f1,f2)   ((f1)->f_parent == (f2)->f_parent && \
  77                          (f1)->f_id == (f2)->f_id)
  78 #define NWCMPN(np1,np2) NWCMPF(&(np1)->n_fid, &(np2)->n_fid)
  79 #define NWCMPV(vp1,vp2) NWCMPN(VTONW(vp1),VTONW(vp2))
  80
  81 struct vop_getpages_args;
  82 struct vop_inactive_args;
  83 struct vop_putpages_args;
  84 struct vop_reclaim_args;
  85 struct ucred;
  86 struct uio;
  87
  88 void nwfs_hash_init(void);
  89 void nwfs_hash_free(void);
  90 int  nwfs_allocvp(struct mount *mp, ncpfid fid, struct vnode **vpp);
  91 int  nwfs_lookupnp(struct nwmount *nmp, ncpfid fid, struct thread *td,
  92         struct nwnode **npp);
  93 int  nwfs_inactive(struct vop_inactive_args *);
  94 int  nwfs_reclaim(struct vop_reclaim_args *);
  95 int nwfs_nget(struct mount *mp, ncpfid fid, const struct nw_entry_info *fap,
  96     struct vnode *dvp, struct vnode **vpp);
  97
  98 int  nwfs_getpages(struct vop_getpages_args *);
  99 int  nwfs_putpages(struct vop_putpages_args *);
 100 int  nwfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred);
 101 int  nwfs_writevnode(struct vnode *vp, struct uio *uiop, struct ucred *cred, int ioflag);
 102 void nwfs_attr_cacheenter(struct vnode *vp, const struct nw_entry_info *fi);
 103 int  nwfs_attr_cachelookup(struct vnode *vp,struct vattr *va);
 104
 105 #define nwfs_attr_cacheremove(vp)       VTONW(vp)->n_atime = 0
 106
 107 #endif /* _NWFS_NODE_H_ */