diff options
| author | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2018-01-28 04:30:35 +0000 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2018-02-03 19:29:51 +0000 |
| commit | 7cc754bc93eafa78695ec03bb0e4e8256d52c76d (patch) | |
| tree | dc55c7555ce60aa779ea6e71c5856e4d6db74a6c /libc/sysdeps/linux/i386 | |
| parent | 8948296356072119a07c6b9435dc16bdc74bdc56 (diff) | |
bits/mman.h: consolidate header file
Sync with GNU C library and consolidate duplicate non
architecture specific defines.
MAP_UNINITIALIZED is only defined to 0x4000000 and used by
the Linux kernel when CONFIG_MMAP_ALLOW_UNINITIALIZED is enabled.
CONFIG_MMAP_ALLOW_UNINITIALIZED is only available for nommu.
See Documentation/nommu-mmap.txt.
Diffstat (limited to 'libc/sysdeps/linux/i386')
| -rw-r--r-- | libc/sysdeps/linux/i386/bits/mman.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/i386/bits/mman.h b/libc/sysdeps/linux/i386/bits/mman.h new file mode 100644 index 000000000..64fee2206 --- /dev/null +++ b/libc/sysdeps/linux/i386/bits/mman.h @@ -0,0 +1,44 @@ +/* Definitions for POSIX memory map interface. Linux/x86 version. + Copyright (C) 2001-2018 Free Software Foundation, Inc. + + 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, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_MMAN_H +# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead." +#endif + +/* The following definitions basically come from the kernel headers. + But the kernel header is not namespace clean. */ + +/* Other flags. */ +#ifdef __USE_MISC +# define MAP_32BIT 0x40 /* Only give out 32-bit addresses. */ +#endif + +/* These are Linux-specific. */ +#ifdef __USE_MISC +# define MAP_GROWSDOWN 0x00100 /* Stack-like segment. */ +# define MAP_DENYWRITE 0x00800 /* ETXTBSY */ +# define MAP_EXECUTABLE 0x01000 /* Mark it as an executable. */ +# define MAP_LOCKED 0x02000 /* Lock the mapping. */ +# define MAP_NORESERVE 0x04000 /* Don't check for reservations. */ +# define MAP_POPULATE 0x08000 /* Populate (prefault) pagetables. */ +# define MAP_NONBLOCK 0x10000 /* Do not block on IO. */ +# define MAP_STACK 0x20000 /* Allocation is for a stack. */ +# define MAP_HUGETLB 0x40000 /* Create huge page mapping. */ +#endif + +/* Include generic Linux declarations. */ +#include <bits/mman-linux.h> |