The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/fs/nwfs/nwfs_node.h

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    1 /*-
    2  * Copyright (c) 1999, 2000, 2001 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  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/9.0/sys/fs/nwfs/nwfs_node.h 206361 2010-04-07 16:50:38Z joel $
   27  */
   28 #ifndef _NWFS_NODE_H_
   29 #define _NWFS_NODE_H_
   30 
   31 #define NWFS_ROOT_INO   0x7ffffffd
   32 
   33 /* Bits for nwnode.n_flag */
   34 #define NFLUSHINPROG    0x0001
   35 #define NFLUSHWANT      0x0002          /* they should gone ... */
   36 #define NMODIFIED       0x0004          /* bogus, until async IO implemented */
   37 #define NREFPARENT      0x0008          /* vnode holds reference to a parent vnode */
   38 #define NVOLUME         0x0010          /* vnode references a volume */
   39 #define NSHOULDFREE     0x0020          /* vnode should be removed from hash */
   40 
   41 struct nwnode {
   42         LIST_ENTRY(nwnode)      n_hash;
   43         struct vnode            *n_vnode;
   44         struct vattr            n_vattr;
   45         struct nwmount          *n_mount;
   46         time_t                  n_atime;        /* attributes cache time*/
   47         time_t                  n_ctime;
   48         time_t                  n_mtime;
   49         int                     n_flag;
   50         ncpfid                  n_parent;
   51         ncpfid                  n_fid;
   52         u_long                  n_attr;         /* LH */
   53         u_long                  n_size;
   54         u_long                  n_dosfid;
   55         int                     opened;
   56 /*      int                     access;*/
   57         u_long                  n_origfh;
   58         ncp_fh                  n_fh;
   59         struct nw_search_seq    n_seq;
   60         u_char                  n_nmlen;
   61         u_char                  n_name[256];
   62 };
   63 
   64 #define VTONW(vp)       ((struct nwnode *)(vp)->v_data)
   65 #define NWTOV(np)       ((struct vnode *)(np)->n_vnode)
   66 #define NWCMPF(f1,f2)   ((f1)->f_parent == (f2)->f_parent && \
   67                          (f1)->f_id == (f2)->f_id)
   68 #define NWCMPN(np1,np2) NWCMPF(&(np1)->n_fid, &(np2)->n_fid)
   69 #define NWCMPV(vp1,vp2) NWCMPN(VTONW(vp1),VTONW(vp2))
   70 
   71 struct vop_getpages_args;
   72 struct vop_inactive_args;
   73 struct vop_putpages_args;
   74 struct vop_reclaim_args;
   75 struct ucred;
   76 struct uio;
   77 
   78 void nwfs_hash_init(void);
   79 void nwfs_hash_free(void);
   80 int  nwfs_lookupnp(struct nwmount *nmp, ncpfid fid, struct thread *td,
   81         struct nwnode **npp);
   82 int  nwfs_inactive(struct vop_inactive_args *);
   83 int  nwfs_reclaim(struct vop_reclaim_args *);
   84 int  nwfs_nget(struct mount *mp, ncpfid fid, struct nw_entry_info *fap,
   85         struct vnode *dvp, struct vnode **vpp);
   86 
   87 int  nwfs_getpages(struct vop_getpages_args *);
   88 int  nwfs_putpages(struct vop_putpages_args *);
   89 int  nwfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred);
   90 int  nwfs_writevnode(struct vnode *vp, struct uio *uiop, struct ucred *cred, int ioflag);
   91 void nwfs_attr_cacheenter(struct vnode *vp, struct nw_entry_info *fi);
   92 int  nwfs_attr_cachelookup(struct vnode *vp,struct vattr *va);
   93 
   94 #define nwfs_attr_cacheremove(vp)       VTONW(vp)->n_atime = 0
   95 
   96 #endif /* _NWFS_NODE_H_ */

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