minix/sys/sys/swap.h
Ben Gras 6c8f7fc3ba netbsd dirent.h, import sys/sys *.h, mfs cleanup
. add all sys/sys headers not already present to help compiling
	. take netbsd dirent.h and struct dirent; main result is
	  introducing d_type and d_namlen that have to be set by getdents()
	  in all FS code implementing it
	. d_off is gone
	. alignment of the struct has become 8 bytes instead of 4
	. remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE
	. libminlib: cleanup unused yet duplicate code
	. mfs: throw out the long-broken v1, v2 support
	. new test for dirent contents filled by getdents()

Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
2014-03-01 09:04:59 +01:00

61 lines
2.5 KiB
C

/* $NetBSD: swap.h,v 1.8 2009/01/14 02:20:45 mrg Exp $ */
/*
* Copyright (c) 1995, 1996, 1998, 2009 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.
*
* 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 _SYS_SWAP_H_
#define _SYS_SWAP_H_
#include <sys/syslimits.h>
/* Thise structure is used to return swap information for userland */
struct swapent {
dev_t se_dev; /* device id */
int se_flags; /* flags */
int se_nblks; /* total blocks */
int se_inuse; /* blocks in use */
int se_priority; /* priority of this device */
char se_path[PATH_MAX+1]; /* path name */
};
#define SWAP_ON 1 /* begin swapping on device */
#define SWAP_OFF 2 /* stop swapping on device */
#define SWAP_NSWAP 3 /* how many swap devices ? */
#define SWAP_STATS13 4 /* old SWAP_STATS, no se_path */
#define SWAP_CTL 5 /* change priority on device */
#define SWAP_STATS50 6 /* old SWAP_STATS, 32 bit dev_t */
#define SWAP_DUMPDEV 7 /* use this device as dump device */
#define SWAP_GETDUMPDEV 8 /* use this device as dump device */
#define SWAP_DUMPOFF 9 /* stop using the dump device */
#define SWAP_STATS 10 /* get device info */
#define SWF_INUSE 0x00000001 /* in use: we have swapped here */
#define SWF_ENABLE 0x00000002 /* enabled: we can swap here */
#define SWF_BUSY 0x00000004 /* busy: I/O happening here */
#define SWF_FAKE 0x00000008 /* fake: still being built */
#endif /* _SYS_SWAP_H_ */