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/* $OpenBSD: tcfs.h,v 1.4 2002/03/14 01:27:08 millert Exp $ */
/*
* Copyright 2000 The TCFS Project at http://tcfs.dia.unisa.it/
* All rights reserved.
*
* 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. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*/
#ifndef _TCFS_H_
#define _TCFS_H_
#include <miscfs/tcfs/tcfs_mount.h>
#ifdef _KERNEL
/*
* A cache of vnode references
*/
struct tcfs_node {
LIST_ENTRY(tcfs_node) tcfs_hash; /* Hash list */
struct vnode *tcfs_lowervp; /* VREFed once */
struct vnode *tcfs_vnode; /* Back pointer */
};
extern int tcfs_node_create(struct mount *mp, struct vnode *target, struct vnode **vpp, int lockit);
#define MOUNTTOTCFSMOUNT(mp) ((struct tcfs_mount *)((mp)->mnt_data))
#define VTOTCFS(vp) ((struct tcfs_node *)(vp)->v_data)
#define TCFSTOV(xp) ((xp)->tcfs_vnode)
#ifdef TCFS_DIAGNOSTIC
extern struct vnode *tcfs_checkvp(struct vnode *vp, char *fil, int lno);
#define TCFSVPTOLOWERVP(vp) tcfs_checkvp((vp), __FILE__, __LINE__)
#else
#define TCFSVPTOLOWERVP(vp) (VTOTCFS(vp)->tcfs_lowervp)
#endif
#define TCFS_VP2UKT(vp) ((MOUNTTOTCFSMOUNT(((vp)->v_mount)))->tcfs_uid_kt)
#define TCFS_VP2GKT(vp) ((MOUNTTOTCFSMOUNT(((vp)->v_mount)))->tcfs_gid_kt)
#define tcfs_fhtovp ((int (*)(struct mount *, struct fid *, \
struct vnode **))eopnotsupp)
#define tcfs_vptofh ((int (*)(struct vnode *, struct fid *))eopnotsupp)
extern int (**tcfs_vnodeop_p)(void *);
extern struct vfsops tcfs_vfsops;
int tcfs_init(struct vfsconf *);
#define BLOCKSIZE 1024
#define SBLOCKSIZE 8
#define ABS(a) ((a)>=0?(a):(-a))
/* variabili esterne */
/* prototyphes */
int tcfs_bypass(void *);
int tcfs_open(void *);
int tcfs_getattr(void *);
int tcfs_setattr(void *);
int tcfs_inactive(void *);
int tcfs_reclaim(void *);
int tcfs_print(void *);
int tcfs_strategy(void *);
int tcfs_bwrite(void *);
int tcfs_lock(void *);
int tcfs_unlock(void *);
int tcfs_islocked(void *);
int tcfs_read(void *);
int tcfs_readdir(void *);
int tcfs_write(void *);
int tcfs_create(void *);
int tcfs_mknod(void *);
int tcfs_mkdir(void *);
int tcfs_link(void *);
int tcfs_symlink(void *);
int tcfs_rename(void *);
int tcfs_lookup(void *);
void *tcfs_getukey(struct ucred *, struct proc *, struct vnode *);
void *tcfs_getpkey(struct ucred *, struct proc *, struct vnode *);
void *tcfs_getgkey(struct ucred *, struct proc *, struct vnode *);
int tcfs_checkukey(struct ucred *, struct proc *, struct vnode *);
int tcfs_checkpkey(struct ucred *, struct proc *, struct vnode *);
int tcfs_checkgkey(struct ucred *, struct proc *, struct vnode *);
int tcfs_exec_cmd(struct tcfs_mount*, struct tcfs_args *);
int tcfs_init_mp(struct tcfs_mount*, struct tcfs_args *);
int tcfs_set_status(struct tcfs_mount *, struct tcfs_args *, int);
#define TCFS_CHECK_AKEY(c,p,v) (\
tcfs_checkukey((c),(p),(v)) || \
tcfs_checkpkey((c),(p),(v)) || \
tcfs_checkgkey((c),(p),(v)) )
#endif /* _KERNEL */
#endif /* _TCFS_H_ */
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