1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
74 lines
2.7 KiB
C
74 lines
2.7 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1995, 1999, 2002 by Ralf Baechle
|
|
*/
|
|
#ifndef _ASM_MMAN_H
|
|
#define _ASM_MMAN_H
|
|
|
|
/*
|
|
* Protections are chosen from these bits, OR'd together. The
|
|
* implementation does not necessarily support PROT_EXEC or PROT_WRITE
|
|
* without PROT_READ. The only guarantees are that no writing will be
|
|
* allowed without PROT_WRITE and no access will be allowed for PROT_NONE.
|
|
*/
|
|
#define PROT_NONE 0x00 /* page can not be accessed */
|
|
#define PROT_READ 0x01 /* page can be read */
|
|
#define PROT_WRITE 0x02 /* page can be written */
|
|
#define PROT_EXEC 0x04 /* page can be executed */
|
|
/* 0x08 reserved for PROT_EXEC_NOFLUSH */
|
|
#define PROT_SEM 0x10 /* page may be used for atomic ops */
|
|
#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */
|
|
#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */
|
|
|
|
/*
|
|
* Flags for mmap
|
|
*/
|
|
#define MAP_SHARED 0x001 /* Share changes */
|
|
#define MAP_PRIVATE 0x002 /* Changes are private */
|
|
#define MAP_TYPE 0x00f /* Mask for type of mapping */
|
|
#define MAP_FIXED 0x010 /* Interpret addr exactly */
|
|
|
|
/* not used by linux, but here to make sure we don't clash with ABI defines */
|
|
#define MAP_RENAME 0x020 /* Assign page to file */
|
|
#define MAP_AUTOGROW 0x040 /* File may grow by writing */
|
|
#define MAP_LOCAL 0x080 /* Copy on fork/sproc */
|
|
#define MAP_AUTORSRV 0x100 /* Logical swap reserved on demand */
|
|
|
|
/* These are linux-specific */
|
|
#define MAP_NORESERVE 0x0400 /* don't check for reservations */
|
|
#define MAP_ANONYMOUS 0x0800 /* don't use a file */
|
|
#define MAP_GROWSDOWN 0x1000 /* stack-like segment */
|
|
#define MAP_DENYWRITE 0x2000 /* ETXTBSY */
|
|
#define MAP_EXECUTABLE 0x4000 /* mark it as an executable */
|
|
#define MAP_LOCKED 0x8000 /* pages are locked */
|
|
#define MAP_POPULATE 0x10000 /* populate (prefault) pagetables */
|
|
#define MAP_NONBLOCK 0x20000 /* do not block on IO */
|
|
|
|
/*
|
|
* Flags for msync
|
|
*/
|
|
#define MS_ASYNC 0x0001 /* sync memory asynchronously */
|
|
#define MS_INVALIDATE 0x0002 /* invalidate mappings & caches */
|
|
#define MS_SYNC 0x0004 /* synchronous memory sync */
|
|
|
|
/*
|
|
* Flags for mlockall
|
|
*/
|
|
#define MCL_CURRENT 1 /* lock all current mappings */
|
|
#define MCL_FUTURE 2 /* lock all future mappings */
|
|
|
|
#define MADV_NORMAL 0x0 /* default page-in behavior */
|
|
#define MADV_RANDOM 0x1 /* page-in minimum required */
|
|
#define MADV_SEQUENTIAL 0x2 /* read-ahead aggressively */
|
|
#define MADV_WILLNEED 0x3 /* pre-fault pages */
|
|
#define MADV_DONTNEED 0x4 /* discard these pages */
|
|
|
|
/* compatibility flags */
|
|
#define MAP_ANON MAP_ANONYMOUS
|
|
#define MAP_FILE 0
|
|
|
|
#endif /* _ASM_MMAN_H */
|