1 | /* $NetBSD: swap.h,v 1.8 2009/01/14 02:20:45 mrg Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1995, 1996, 1998, 2009 Matthew R. Green |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * |
16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #ifndef _SYS_SWAP_H_ |
29 | #define _SYS_SWAP_H_ |
30 | |
31 | #include <sys/syslimits.h> |
32 | |
33 | /* Thise structure is used to return swap information for userland */ |
34 | |
35 | struct swapent { |
36 | dev_t se_dev; /* device id */ |
37 | int se_flags; /* flags */ |
38 | int se_nblks; /* total blocks */ |
39 | int se_inuse; /* blocks in use */ |
40 | int se_priority; /* priority of this device */ |
41 | char se_path[PATH_MAX+1]; /* path name */ |
42 | }; |
43 | |
44 | #define SWAP_ON 1 /* begin swapping on device */ |
45 | #define SWAP_OFF 2 /* stop swapping on device */ |
46 | #define SWAP_NSWAP 3 /* how many swap devices ? */ |
47 | #define SWAP_STATS13 4 /* old SWAP_STATS, no se_path */ |
48 | #define SWAP_CTL 5 /* change priority on device */ |
49 | #define SWAP_STATS50 6 /* old SWAP_STATS, 32 bit dev_t */ |
50 | #define SWAP_DUMPDEV 7 /* use this device as dump device */ |
51 | #define SWAP_GETDUMPDEV 8 /* use this device as dump device */ |
52 | #define SWAP_DUMPOFF 9 /* stop using the dump device */ |
53 | #define SWAP_STATS 10 /* get device info */ |
54 | |
55 | #define SWF_INUSE 0x00000001 /* in use: we have swapped here */ |
56 | #define SWF_ENABLE 0x00000002 /* enabled: we can swap here */ |
57 | #define SWF_BUSY 0x00000004 /* busy: I/O happening here */ |
58 | #define SWF_FAKE 0x00000008 /* fake: still being built */ |
59 | |
60 | #endif /* _SYS_SWAP_H_ */ |
61 | |