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

   1 /* Definitions for POSIX memory map interface.  Linux/SPARC version.
   2    Copyright (C) 1997-2020 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, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _SYS_MMAN_H
  20 # error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
  21 #endif
  22
  23 /* The following definitions basically come from the kernel headers.
  24    But the kernel header is not namespace clean.  */
  25
  26
  27 /* These are Linux-specific.  */
  28 #ifdef __USE_MISC
  29 # define MAP_GROWSDOWN  0x0200          /* Stack-like segment.  */
  30 # define MAP_DENYWRITE  0x0800          /* ETXTBSY */
  31 # define MAP_EXECUTABLE 0x1000          /* Mark it as an executable.  */
  32 # define MAP_LOCKED     0x0100          /* Lock the mapping.  */
  33 # define MAP_NORESERVE  0x0040          /* Don't check for reservations.  */
  34 # define _MAP_NEW       0x80000000      /* Binary compatibility with SunOS.  */
  35 # define MAP_POPULATE   0x8000          /* Populate (prefault) pagetables.  */
  36 # define MAP_NONBLOCK   0x10000         /* Do not block on IO.  */
  37 # define MAP_STACK      0x20000         /* Allocation is for a stack.  */
  38 # define MAP_HUGETLB    0x40000         /* Create huge page mapping.  */
  39 # define MAP_SYNC       0x80000         /* Perform synchronous page
  40                                            faults for the mapping.  */
  41 # define MAP_FIXED_NOREPLACE 0x100000   /* MAP_FIXED but do not unmap
  42                                            underlying mapping.  */
  43 #endif
  44
  45 /* Flags for `mlockall'.  */
  46 #define MCL_CURRENT     0x2000          /* Lock all currently mapped pages.  */
  47 #define MCL_FUTURE      0x4000          /* Lock all additions to address
  48                                            space.  */
  49 #define MCL_ONFAULT     0x8000          /* Lock all pages that are
  50                                            faulted in.  */
  51 /* Include generic Linux declarations.  */
  52 #include <bits/mman-linux.h>
  53
  54 /* Other flags.  */
  55 #ifdef __USE_MISC
  56 # define MAP_RENAME     MAP_ANONYMOUS
  57 #endif