1 /* Calls to enable and disable swapping on specified locations. Linux version. 2 Copyright (C) 1996, 1998, 1999, 2010 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 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. 9 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 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20 #ifndef _SYS_SWAP_H 21 22 #define _SYS_SWAP_H 1 23 #include <features.h> 24 25 /* The swap priority is encoded as: 26 (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK 27 */ 28 #define SWAP_FLAG_PREFER 0x8000 /* Set if swap priority is specified. */ 29 #define SWAP_FLAG_PRIO_MASK 0x7fff 30 #define SWAP_FLAG_PRIO_SHIFT 0 31 #define SWAP_FLAG_DISCARD 0x10000 /* Discard swap cluster after use. */ 32 33 __BEGIN_DECLS 34 35 /* Make the block special device PATH available to the system for swapping. 36 This call is restricted to the super-user. */ 37 extern int swapon (__const char *__path, int __flags) __THROW; 38 39 /* Stop using block special device PATH for swapping. */ 40 extern int swapoff (__const char *__path) __THROW; 41 42 __END_DECLS 43 44 #endif /* _SYS_SWAP_H */ 45
