/* Definitions for POSIX memory map interface. Linux/HPPA version. Copyright (C) 1997, 1998, 2000, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #ifndef _SYS_MMAN_H # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." #endif /* these are basically taken from the kernel definitions */ #define PROT_READ 0x1 /* page can be read */ #define PROT_WRITE 0x2 /* page can be written */ #define PROT_EXEC 0x4 /* page can be executed */ #define PROT_NONE 0x0 /* page can not be accessed */ #define PROT_GROWSDOWN 0x01000000 /* Extend change to start of growsdown vma (mprotect only). */ #define PROT_GROWSUP 0x02000000 /* Extend change to start of growsup vma (mprotect only). */ #define MAP_SHARED 0x01 /* Share changes */ #define MAP_PRIVATE 0x02 /* Changes are private */ #define MAP_TYPE 0x03 /* Mask for type of mapping */ #define MAP_FIXED 0x04 /* Interpret addr exactly */ #define MAP_ANONYMOUS 0x10 /* don't use a file */ #define MAP_DENYWRITE 0x0800 /* ETXTBSY */ #define MAP_EXECUTABLE 0x1000 /* mark it as an executable */ #define MAP_LOCKED 0x2000 /* pages are locked */ #define MAP_NORESERVE 0x4000 /* don't check for reservations */ #define MAP_GROWSDOWN 0x8000 /* stack-like segment */ #define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */ #define MAP_NONBLOCK 0x20000 /* do not block on IO */ #define MS_SYNC 1 /* synchronous memory sync */ #define MS_ASYNC 2 /* sync memory asynchronously */ #define MS_INVALIDATE 4 /* invalidate the caches */ #define MCL_CURRENT 1 /* lock all current mappings */ #define MCL_FUTURE 2 /* lock all future mappings */ /* Advice to "madvise" */ #ifdef __USE_BSD # define MADV_NORMAL 0 /* no further special treatment */ # define MADV_RANDOM 1 /* expect random page references */ # define MADV_SEQUENTIAL 2 /* expect sequential page references */ # define MADV_WILLNEED 3 /* will need these pages */ # define MADV_DONTNEED 4 /* dont need these pages */ # define MADV_SPACEAVAIL 5 /* insure that resources are reserved */ # define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */ # define MADV_VPS_INHERIT 7 /* Inherit parents page size */ # define MADV_REMOVE 9 /* Remove these pages and resources. */ # define MADV_DONTFORK 10 /* Do not inherit across fork. */ # define MADV_DOFORK 11 /* Do inherit across fork. */ #endif /* The range 12-64 is reserved for page size specification. */ #define MADV_4K_PAGES 12 /* Use 4K pages */ #define MADV_16K_PAGES 14 /* Use 16K pages */ #define MADV_64K_PAGES 16 /* Use 64K pages */ #define MADV_256K_PAGES 18 /* Use 256K pages */ #define MADV_1M_PAGES 20 /* Use 1 Megabyte pages */ #define MADV_4M_PAGES 22 /* Use 4 Megabyte pages */ #define MADV_16M_PAGES 24 /* Use 16 Megabyte pages */ #define MADV_64M_PAGES 26 /* Use 64 Megabyte pages */ /* compatibility flags */ #define MAP_ANON MAP_ANONYMOUS #define MAP_FILE 0 #define MAP_VARIABLE 0 /* Flags for `mremap'. */ #ifdef __USE_GNU # define MREMAP_MAYMOVE 1 # define MREMAP_FIXED 2 #endif