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Diffstat (limited to 'sys/sys/swap.h')
| -rw-r--r-- | sys/sys/swap.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/sys/sys/swap.h b/sys/sys/swap.h new file mode 100644 index 0000000..ad7b442 --- /dev/null +++ b/sys/sys/swap.h @@ -0,0 +1,62 @@ +/* $OpenBSD: swap.h,v 1.7 2013/09/30 12:02:30 millert Exp $ */ +/* $NetBSD: swap.h,v 1.2 1998/09/13 14:46:24 christos Exp $ */ + +/* + * Copyright (c) 1995, 1996, 1998 Matthew R. Green, Tobias Weingartner + * 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 _SYS_SWAP_H_ +#define _SYS_SWAP_H_ + +#include <sys/syslimits.h> + +/* These structures are 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]; /* path name */ +}; + +#ifdef _KERNEL +#define NETDEV (dev_t)(-2) /* network device (for nfs swap) */ +#endif /* _KERNEL */ + +#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_STATS 4 /* get device info */ +#define SWAP_CTL 5 /* change priority on device */ +#define SWAP_DUMPDEV 7 /* use this device as dump device */ + +#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_ */ |