NetBSD/sys/vm/vm_swap.h

61 lines
2.1 KiB
C

/* $NetBSD: vm_swap.h,v 1.6 1997/12/02 13:47:41 pk Exp $ */
/*
* Copyright (c) 1995, 1996 Matthew R. Green
* 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 author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _VM_VM_SWAP_H_
#define _VM_VM_SWAP_H_
/* These structures are used to return swap information for userland */
struct swapent {
dev_t se_dev;
int se_flags;
int se_nblks;
int se_inuse;
int se_priority;
};
#define SWAP_ON 1
#define SWAP_OFF 2
#define SWAP_NSWAP 3
#define SWAP_STATS 4
#define SWAP_CTL 5
#define SWF_INUSE 0x00000001
#define SWF_ENABLE 0x00000002
#define SWF_BUSY 0x00000004
#ifdef _KERNEL
int sys_swapctl __P((struct proc *, void *, register_t *));
daddr_t swap_alloc __P((int size));
void swap_free __P((int size, daddr_t addr));
void swapinit __P((void));
#endif
#endif /* _VM_VM_SWAP_H_ */