aboutsummaryrefslogtreecommitdiff
path: root/sys/sys/mman.h
diff options
context:
space:
mode:
Diffstat (limited to 'sys/sys/mman.h')
-rw-r--r--sys/sys/mman.h165
1 files changed, 165 insertions, 0 deletions
diff --git a/sys/sys/mman.h b/sys/sys/mman.h
new file mode 100644
index 0000000..47972b5
--- /dev/null
+++ b/sys/sys/mman.h
@@ -0,0 +1,165 @@
+/* $OpenBSD: mman.h,v 1.34 2019/03/01 01:46:18 cheloha Exp $ */
+/* $NetBSD: mman.h,v 1.11 1995/03/26 20:24:23 jtc Exp $ */
+
+/*-
+ * 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.
+ * 3. 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 8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _KERNEL
+#include <sys/cdefs.h>
+#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 */
+
+/*
+ * Other flags
+ */
+#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */
+#define __MAP_NOREPLACE 0x0800 /* fail if address not available */
+#define MAP_ANON 0x1000 /* allocated from memory, swap space */
+#define MAP_ANONYMOUS MAP_ANON /* alternate POSIX spelling */
+#define __MAP_NOFAULT 0x2000
+#define MAP_STACK 0x4000 /* mapping is used for a stack */
+#define MAP_CONCEAL 0x8000 /* omit from dumps */
+
+#define MAP_FLAGMASK 0xfff7
+
+#ifndef _KERNEL
+/*
+ * Legacy defines for userland source compatibility.
+ * Can be removed once no longer needed in base and ports.
+ */
+#define MAP_COPY MAP_PRIVATE /* "copy" region at mmap time */
+#define MAP_FILE 0 /* map from file (default) */
+#define MAP_HASSEMAPHORE 0 /* region may contain semaphores */
+#define MAP_INHERIT 0 /* region is retained after exec */
+#define MAP_NOEXTEND 0 /* for MAP_FILE, don't change file size */
+#define MAP_NORESERVE 0 /* Sun: don't reserve needed swap area */
+#define MAP_RENAME 0 /* Sun: rename private pages to file */
+#define MAP_TRYFIXED 0 /* attempt hint address, even within heap */
+#endif
+
+/*
+ * Error return from mmap()
+ */
+#define MAP_FAILED ((void *)-1)
+
+/*
+ * POSIX memory advisory values.
+ * Note: keep consistent with the original definitions below.
+ */
+#define POSIX_MADV_NORMAL 0 /* no further special treatment */
+#define POSIX_MADV_RANDOM 1 /* expect random page references */
+#define POSIX_MADV_SEQUENTIAL 2 /* expect sequential page references */
+#define POSIX_MADV_WILLNEED 3 /* will need these pages */
+#define POSIX_MADV_DONTNEED 4 /* don't need these pages */
+
+#if __BSD_VISIBLE
+/*
+ * Original advice values, equivalent to POSIX definitions,
+ * and few implementation-specific ones. For in-kernel and historic use.
+ */
+#define MADV_NORMAL POSIX_MADV_NORMAL
+#define MADV_RANDOM POSIX_MADV_RANDOM
+#define MADV_SEQUENTIAL POSIX_MADV_SEQUENTIAL
+#define MADV_WILLNEED POSIX_MADV_WILLNEED
+#define MADV_DONTNEED POSIX_MADV_DONTNEED
+#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
+#define MADV_FREE 6 /* pages are empty, free them */
+#endif
+
+/*
+ * Flags to minherit
+ */
+#define MAP_INHERIT_SHARE 0 /* share with child */
+#define MAP_INHERIT_COPY 1 /* copy into child */
+#define MAP_INHERIT_NONE 2 /* absent from child */
+#define MAP_INHERIT_ZERO 3 /* zero in child */
+
+/*
+ * Flags to msync
+ */
+#define MS_ASYNC 0x01 /* perform asynchronous writes */
+#define MS_SYNC 0x02 /* perform synchronous writes */
+#define MS_INVALIDATE 0x04 /* invalidate cached data */
+
+/*
+ * Flags to mlockall
+ */
+#define MCL_CURRENT 0x01 /* lock all pages currently mapped */
+#define MCL_FUTURE 0x02 /* lock all pages mapped in the future */
+
+#ifndef _KERNEL
+#include <sys/_types.h>
+
+#ifndef _SIZE_T_DEFINED_
+#define _SIZE_T_DEFINED_
+typedef __size_t size_t;
+#endif
+
+#ifndef _OFF_T_DEFINED_
+#define _OFF_T_DEFINED_
+typedef __off_t off_t;
+#endif
+
+__BEGIN_DECLS
+void * mmap(void *, size_t, int, int, int, off_t);
+int mprotect(void *, size_t, int);
+int munmap(void *, size_t);
+int msync(void *, size_t, int);
+int mlock(const void *, size_t);
+int munlock(const void *, size_t);
+int mlockall(int);
+int munlockall(void);
+#if __BSD_VISIBLE
+int madvise(void *, size_t, int);
+int minherit(void *, size_t, int);
+void * mquery(void *, size_t, int, int, int, off_t);
+#endif
+int posix_madvise(void *, size_t, int);
+int shm_open(const char *, int, __mode_t);
+int shm_unlink(const char *);
+int shm_mkstemp(char *);
+__END_DECLS
+
+#endif /* !_KERNEL */