Annotation of sys/sys/swap.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: swap.h,v 1.4 2001/06/27 04:51:48 art Exp $ */
2: /* $NetBSD: swap.h,v 1.2 1998/09/13 14:46:24 christos Exp $ */
3:
4: /*
5: * Copyright (c) 1995, 1996, 1998 Matthew R. Green, Tobias Weingartner
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. The name of the author may not be used to endorse or promote products
17: * derived from this software without specific prior written permission
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30:
31: /* NOTE: This is the current swap.h from NetBSD. Since we are "upgrading"
32: * to the new vm_swap code now, we will not keep compatibility with the
33: * old vm_swap code that was in NetBSD. This means that we do not have
34: * an oswapent structure, but instead use a "new" swapent structure, with
35: * no overlay.
36: *
37: * --Toby.
38: */
39:
40: #ifndef _SYS_SWAP_H_
41: #define _SYS_SWAP_H_
42:
43: #include <sys/syslimits.h>
44:
45: /* These structures are used to return swap information for userland */
46: struct swapent {
47: dev_t se_dev; /* device id */
48: int se_flags; /* flags */
49: int se_nblks; /* total blocks */
50: int se_inuse; /* blocks in use */
51: int se_priority; /* priority of this device */
52: char se_path[MAXPATHLEN]; /* path name */
53: };
54:
55: #define SWAP_ON 1 /* begin swapping on device */
56: #define SWAP_OFF 2 /* (stop swapping on device) */
57: #define SWAP_NSWAP 3 /* how many swap devices ? */
58: #define SWAP_STATS 4 /* get device info */
59: #define SWAP_CTL 5 /* change priority on device */
60: #define SWAP_DUMPDEV 7 /* use this device as dump device */
61:
62: #define SWF_INUSE 0x00000001 /* in use: we have swapped here */
63: #define SWF_ENABLE 0x00000002 /* enabled: we can swap here */
64: #define SWF_BUSY 0x00000004 /* busy: I/O happening here */
65: #define SWF_FAKE 0x00000008 /* fake: still being built */
66:
67: #endif /* _SYS_SWAP_H_ */
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