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glibc  2.9
swap.h
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00001 /* Calls to enable and disable swapping on specified locations.  Linux version.
00002    Copyright (C) 1996, 1998, 1999 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #ifndef _SYS_SWAP_H
00021 
00022 #define _SYS_SWAP_H  1
00023 #include <features.h>
00024 
00025 /* The swap priority is encoded as:
00026    (prio << SWAP_FLAG_PRIO_SHIFT) & SWAP_FLAG_PRIO_MASK
00027 */
00028 #define       SWAP_FLAG_PREFER     0x8000 /* Set if swap priority is specified. */
00029 #define       SWAP_FLAG_PRIO_MASK  0x7fff
00030 #define       SWAP_FLAG_PRIO_SHIFT 0
00031 
00032 __BEGIN_DECLS
00033 
00034 /* Make the block special device PATH available to the system for swapping.
00035    This call is restricted to the super-user.  */
00036 extern int swapon (__const char *__path, int __flags) __THROW;
00037 
00038 /* Stop using block special device PATH for swapping.  */
00039 extern int swapoff (__const char *__path) __THROW;
00040 
00041 __END_DECLS
00042 
00043 #endif /* _SYS_SWAP_H */