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4d6acc61 | 1 | /* Calls to enable and disable swapping on specified locations. Linux version. |
b168057a | 2 | Copyright (C) 1996-2015 Free Software Foundation, Inc. |
8a4b65b4 | 3 | This file is part of the GNU C Library. |
4d6acc61 | 4 | |
8a4b65b4 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
4d6acc61 | 9 | |
8a4b65b4 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
4d6acc61 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
4d6acc61 | 18 | |
8a4b65b4 | 19 | #ifndef _SYS_SWAP_H |
4d6acc61 | 20 | |
8a4b65b4 | 21 | #define _SYS_SWAP_H 1 |
4d6acc61 RM |
22 | #include <features.h> |
23 | ||
8325d82c UD |
24 | /* The swap priority is encoded as: |
25 | (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK | |
26 | */ | |
27 | #define SWAP_FLAG_PREFER 0x8000 /* Set if swap priority is specified. */ | |
28 | #define SWAP_FLAG_PRIO_MASK 0x7fff | |
29 | #define SWAP_FLAG_PRIO_SHIFT 0 | |
a1fb5e3e | 30 | #define SWAP_FLAG_DISCARD 0x10000 /* Discard swap cluster after use. */ |
4d6acc61 | 31 | |
8a4b65b4 | 32 | __BEGIN_DECLS |
4d6acc61 RM |
33 | |
34 | /* Make the block special device PATH available to the system for swapping. | |
35 | This call is restricted to the super-user. */ | |
a784e502 | 36 | extern int swapon (const char *__path, int __flags) __THROW; |
4d6acc61 RM |
37 | |
38 | /* Stop using block special device PATH for swapping. */ | |
a784e502 | 39 | extern int swapoff (const char *__path) __THROW; |
4d6acc61 | 40 | |
8a4b65b4 | 41 | __END_DECLS |
4d6acc61 | 42 | |
8a4b65b4 | 43 | #endif /* _SYS_SWAP_H */ |