From 644e40dd9c853f03841ecd0e78bd10a8179a3f68 Mon Sep 17 00:00:00 2001 From: Gedare Bloom Date: Mon, 1 Aug 2016 14:55:57 -0500 Subject: [PATCH] rtems: add sys/mman.h This file was copied verbatim from FreeBSD and is in sync with the FreeBSD svn version used by rtems-libbsd. Signed-off-by: Joel Sherrill --- newlib/libc/sys/rtems/include/sys/mman.h | 263 +++++++++++++++++++++++ 1 file changed, 263 insertions(+) create mode 100644 newlib/libc/sys/rtems/include/sys/mman.h diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h new file mode 100644 index 000000000..e7e5cf46b --- /dev/null +++ b/newlib/libc/sys/rtems/include/sys/mman.h @@ -0,0 +1,263 @@ +/*- + * Copyright (c) 1982, 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)mman.h 8.2 (Berkeley) 1/9/95 + * $FreeBSD$ + */ + +#ifndef _SYS_MMAN_H_ +#define _SYS_MMAN_H_ + +#include +#include + +#if __BSD_VISIBLE +/* + * Inheritance for minherit() + */ +#define INHERIT_SHARE 0 +#define INHERIT_COPY 1 +#define INHERIT_NONE 2 +#endif + +/* + * Protections are chosen from these bits, or-ed together + */ +#define PROT_NONE 0x00 /* no permissions */ +#define PROT_READ 0x01 /* pages can be read */ +#define PROT_WRITE 0x02 /* pages can be written */ +#define PROT_EXEC 0x04 /* pages can be executed */ + +/* + * Flags contain sharing type and options. + * Sharing types; choose one. + */ +#define MAP_SHARED 0x0001 /* share changes */ +#define MAP_PRIVATE 0x0002 /* changes are private */ +#if __BSD_VISIBLE +#define MAP_COPY MAP_PRIVATE /* Obsolete */ +#endif + +/* + * Other flags + */ +#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */ + +#if __BSD_VISIBLE +#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */ +#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */ +#define MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */ +#define MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */ +#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */ +#define MAP_STACK 0x0400 /* region grows down, like a stack */ +#define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */ + +/* + * Mapping type + */ +#define MAP_FILE 0x0000 /* map from file (default) */ +#define MAP_ANON 0x1000 /* allocated from memory, swap space */ +#ifndef _KERNEL +#define MAP_ANONYMOUS MAP_ANON /* For compatibility. */ +#endif /* !_KERNEL */ + +/* + * Extended flags + */ +#define MAP_NOCORE 0x00020000 /* dont include these pages in a coredump */ +#define MAP_PREFAULT_READ 0x00040000 /* prefault mapping for reading */ + +/* + * Request specific alignment (n == log2 of the desired alignment). + * + * MAP_ALIGNED_SUPER requests optimal superpage alignment, but does + * not enforce a specific alignment. + */ +#define MAP_ALIGNED(n) ((n) << MAP_ALIGNMENT_SHIFT) +#define MAP_ALIGNMENT_SHIFT 24 +#define MAP_ALIGNMENT_MASK MAP_ALIGNED(0xff) +#define MAP_ALIGNED_SUPER MAP_ALIGNED(1) /* align on a superpage */ +#endif /* __BSD_VISIBLE */ + +#if __POSIX_VISIBLE >= 199309 +/* + * Process memory locking + */ +#define MCL_CURRENT 0x0001 /* Lock only current memory */ +#define MCL_FUTURE 0x0002 /* Lock all future memory as well */ +#endif + +/* + * Error return from mmap() + */ +#define MAP_FAILED ((void *)-1) + +/* + * msync() flags + */ +#define MS_SYNC 0x0000 /* msync synchronously */ +#define MS_ASYNC 0x0001 /* return immediately */ +#define MS_INVALIDATE 0x0002 /* invalidate all cached data */ + +/* + * Advice to madvise + */ +#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 */ + +#if __BSD_VISIBLE +#define MADV_NORMAL _MADV_NORMAL +#define MADV_RANDOM _MADV_RANDOM +#define MADV_SEQUENTIAL _MADV_SEQUENTIAL +#define MADV_WILLNEED _MADV_WILLNEED +#define MADV_DONTNEED _MADV_DONTNEED +#define MADV_FREE 5 /* dont need these pages, and junk contents */ +#define MADV_NOSYNC 6 /* try to avoid flushes to physical media */ +#define MADV_AUTOSYNC 7 /* revert to default flushing strategy */ +#define MADV_NOCORE 8 /* do not include these pages in a core file */ +#define MADV_CORE 9 /* revert to including pages in a core file */ +#define MADV_PROTECT 10 /* protect process from pageout kill */ + +/* + * Return bits from mincore + */ +#define MINCORE_INCORE 0x1 /* Page is incore */ +#define MINCORE_REFERENCED 0x2 /* Page has been referenced by us */ +#define MINCORE_MODIFIED 0x4 /* Page has been modified by us */ +#define MINCORE_REFERENCED_OTHER 0x8 /* Page has been referenced */ +#define MINCORE_MODIFIED_OTHER 0x10 /* Page has been modified */ +#define MINCORE_SUPER 0x20 /* Page is a "super" page */ + +/* + * Anonymous object constant for shm_open(). + */ +#define SHM_ANON ((char *)1) +#endif /* __BSD_VISIBLE */ + +/* + * XXX missing POSIX_TYPED_MEM_* macros and + * posix_typed_mem_info structure. + */ +#if __POSIX_VISIBLE >= 200112 +#define POSIX_MADV_NORMAL _MADV_NORMAL +#define POSIX_MADV_RANDOM _MADV_RANDOM +#define POSIX_MADV_SEQUENTIAL _MADV_SEQUENTIAL +#define POSIX_MADV_WILLNEED _MADV_WILLNEED +#define POSIX_MADV_DONTNEED _MADV_DONTNEED +#endif + +#ifndef _MODE_T_DECLARED +typedef __mode_t mode_t; +#define _MODE_T_DECLARED +#endif + +#ifndef _OFF_T_DECLARED +typedef __off_t off_t; +#define _OFF_T_DECLARED +#endif + +#ifndef _SIZE_T_DECLARED +typedef __size_t size_t; +#define _SIZE_T_DECLARED +#endif + +#if defined(_KERNEL) || defined(_WANT_FILE) +#include + +struct file; + +struct shmfd { + size_t shm_size; + vm_object_t shm_object; + int shm_refs; + uid_t shm_uid; + gid_t shm_gid; + mode_t shm_mode; + int shm_kmappings; + + /* + * Values maintained solely to make this a better-behaved file + * descriptor for fstat() to run on. + */ + struct timespec shm_atime; + struct timespec shm_mtime; + struct timespec shm_ctime; + struct timespec shm_birthtime; + ino_t shm_ino; + + struct label *shm_label; /* MAC label */ + const char *shm_path; +}; +#endif + +#ifdef _KERNEL +int shm_mmap(struct shmfd *shmfd, vm_size_t objsize, vm_ooffset_t foff, + vm_object_t *obj); +int shm_map(struct file *fp, size_t size, off_t offset, void **memp); +int shm_unmap(struct file *fp, void *mem, size_t size); +void shm_path(struct shmfd *shmfd, char *path, size_t size); + +#else /* !_KERNEL */ + +__BEGIN_DECLS +/* + * XXX not yet implemented: posix_mem_offset(), posix_typed_mem_get_info(), + * posix_typed_mem_open(). + */ +#if __BSD_VISIBLE +int getpagesizes(size_t *, int); +int madvise(void *, size_t, int); +int mincore(const void *, size_t, char *); +int minherit(void *, size_t, int); +#endif +int mlock(const void *, size_t); +#ifndef _MMAP_DECLARED +#define _MMAP_DECLARED +void * mmap(void *, size_t, int, int, int, off_t); +#endif +int mprotect(const void *, size_t, int); +int msync(void *, size_t, int); +int munlock(const void *, size_t); +int munmap(void *, size_t); +#if __POSIX_VISIBLE >= 200112 +int posix_madvise(void *, size_t, int); +#endif +#if __POSIX_VISIBLE >= 199309 +int mlockall(int); +int munlockall(void); +int shm_open(const char *, int, mode_t); +int shm_unlink(const char *); +#endif +__END_DECLS + +#endif /* !_KERNEL */ + +#endif /* !_SYS_MMAN_H_ */