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/* $OpenBSD: tcfs_fileinfo.h,v 1.3 2000/06/17 20:25:54 provos 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.
*/
/* Management information for files */
typedef struct {
unsigned long flag;
unsigned int end_of_file;
} tcfs_fileinfo;
#define MBFLAG 0x00000010
#define SPFLAG 0x000000e0
#define GSFLAG 0x00000100
#define FI_CFLAG(x) (((x)->flag&MBFLAG)>>4)
#define FI_SPURE(x) (((x)->flag&SPFLAG)>>5)
#define FI_GSHAR(x) (((x)->flag&GSFLAG)>>8)
#define FI_ENDOF(x) ((x)->end_of_file)
#define FI_SET_CF(x,y) ((x)->flag=\
((x)->flag & (~MBFLAG))|((y<<4)&MBFLAG))
#define FI_SET_SP(x,y) ((x)->flag=\
((x)->flag & (~SPFLAG))|((y<<5)&SPFLAG))
#define FI_SET_GS(x,y) ((x)->flag=\
((x)->flag & (~GSFLAG))|((y<<8)&GSFLAG))
/* Function prototypes */
tcfs_fileinfo tcfs_get_fileinfo(void *);
tcfs_fileinfo tcfs_xgetflags(struct vnode *,struct proc *,struct ucred*);
int tcfs_set_fileinfo(void *, tcfs_fileinfo *);
int tcfs_xsetflags(struct vnode *, struct proc *, struct ucred *, tcfs_fileinfo *);
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