sysdeps/unix/sysv/linux/hppa/bits/mman.h

   1 /* Definitions for POSIX memory map interface.  Linux/HPPA version.
   2    Copyright (C) 1997, 1998, 2000, 2003 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_MMAN_H
  21 # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
  22 #endif
  23
  24 /* these are basically taken from the kernel definitions */
  25
  26 #define PROT_READ       0x1             /* page can be read */
  27 #define PROT_WRITE      0x2             /* page can be written */
  28 #define PROT_EXEC       0x4             /* page can be executed */
  29 #define PROT_NONE       0x0             /* page can not be accessed */
  30 #define PROT_GROWSDOWN  0x01000000      /* Extend change to start of
  31                                            growsdown vma (mprotect only).  */
  32 #define PROT_GROWSUP    0x02000000      /* Extend change to start of
  33                                            growsup vma (mprotect only).  */
  34
  35 #define MAP_SHARED      0x01            /* Share changes */
  36 #define MAP_PRIVATE     0x02            /* Changes are private */
  37 #define MAP_TYPE        0x03            /* Mask for type of mapping */
  38 #define MAP_FIXED       0x04            /* Interpret addr exactly */
  39 #define MAP_ANONYMOUS   0x10            /* don't use a file */
  40
  41 #define MAP_DENYWRITE   0x0800          /* ETXTBSY */
  42 #define MAP_EXECUTABLE  0x1000          /* mark it as an executable */
  43 #define MAP_LOCKED      0x2000          /* pages are locked */
  44 #define MAP_NORESERVE   0x4000          /* don't check for reservations */
  45 #define MAP_GROWSDOWN   0x8000          /* stack-like segment */
  46 #define MAP_POPULATE    0x10000         /* populate (prefault) pagetables */
  47 #define MAP_NONBLOCK    0x20000         /* do not block on IO */
  48
  49 #define MS_SYNC         1               /* synchronous memory sync */
  50 #define MS_ASYNC        2               /* sync memory asynchronously */
  51 #define MS_INVALIDATE   4               /* invalidate the caches */
  52
  53 #define MCL_CURRENT     1               /* lock all current mappings */
  54 #define MCL_FUTURE      2               /* lock all future mappings */
  55
  56 #define MADV_NORMAL     0               /* no further special treatment */
  57 #define MADV_RANDOM     1               /* expect random page references */
  58 #define MADV_SEQUENTIAL 2               /* expect sequential page references */
  59 #define MADV_WILLNEED   3               /* will need these pages */
  60 #define MADV_DONTNEED   4               /* dont need these pages */
  61 #define MADV_SPACEAVAIL 5               /* insure that resources are reserved */
  62 #define MADV_VPS_PURGE  6               /* Purge pages from VM page cache */
  63 #define MADV_VPS_INHERIT 7              /* Inherit parents page size */
  64
  65 /* The range 12-64 is reserved for page size specification. */
  66 #define MADV_4K_PAGES   12              /* Use 4K pages  */
  67 #define MADV_16K_PAGES  14              /* Use 16K pages */
  68 #define MADV_64K_PAGES  16              /* Use 64K pages */
  69 #define MADV_256K_PAGES 18              /* Use 256K pages */
  70 #define MADV_1M_PAGES   20              /* Use 1 Megabyte pages */
  71 #define MADV_4M_PAGES   22              /* Use 4 Megabyte pages */
  72 #define MADV_16M_PAGES  24              /* Use 16 Megabyte pages */
  73 #define MADV_64M_PAGES  26              /* Use 64 Megabyte pages */
  74
  75 /* compatibility flags */
  76 #define MAP_ANON        MAP_ANONYMOUS
  77 #define MAP_FILE        0
  78 #define MAP_VARIABLE    0
  79
  80 /* Flags for `mremap'.  */
  81 #ifdef __USE_GNU
  82 # define MREMAP_MAYMOVE 1
  83 #endif