[newlib-cygwin] rtems: add sys/mman.h

[Joel Sherrill <joel at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=644e40dd9c853f03841ecd0e78bd10a8179a3f68

commit 644e40dd9c853f03841ecd0e78bd10a8179a3f68
Author: Gedare Bloom <gedare@rtems.org>
Date:   Mon Aug 1 14:55:57 2016 -0500

    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 <joelemail@rtems.org>

Diff:
---
 newlib/libc/sys/rtems/include/sys/mman.h | 263 +++++++++++++++++++++++++++++++
 1 file changed, 263 insertions(+)

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 0000000..e7e5cf4
--- /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 <sys/cdefs.h>
+#include <sys/_types.h>
+
+#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 <vm/vm.h>
+
+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_ */