[rtems commit] sys/mman.h: New file. Clean up and add supporting stubs
Joel Sherril
joel at rtems.org
Thu Nov 20 18:57:49 UTC 2014
Module: rtems
Branch: master
Commit: 287843f14c2ed7bd3c02f837ac1d70d6a2659e22
Changeset: http://git.rtems.org/rtems/commit/?id=287843f14c2ed7bd3c02f837ac1d70d6a2659e22
Author: Joel Sherrill <joel.sherrill at oarcorp.com>
Date: Thu Nov 6 16:16:56 2014 -0600
sys/mman.h: New file. Clean up and add supporting stubs
* Makefile.am updated and preinstall.am regenerated.
* mprotect.c had a prototype removed now that we have mman.h
* mmap.c, munmap.c: New stub files.
---
cpukit/Makefile.am | 1 +
cpukit/posix/Makefile.am | 2 +
cpukit/posix/include/sys/mman.h | 189 ++++++++++++++++++++++++++++++++++++++++
cpukit/posix/src/mmap.c | 26 ++++++
cpukit/posix/src/mprotect.c | 10 +--
cpukit/posix/src/munmap.c | 30 +++++++
cpukit/preinstall.am | 4 +
7 files changed, 254 insertions(+), 8 deletions(-)
diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am
index 38525fe..9a78587 100644
--- a/cpukit/Makefile.am
+++ b/cpukit/Makefile.am
@@ -50,6 +50,7 @@ include_sys_HEADERS =
include_HEADERS += include/crypt.h
include_HEADERS += include/memory.h
+include_sys_HEADERS += posix/include/sys/mman.h
include_sys_HEADERS += libcsupport/include/sys/ioccom.h
include_sys_HEADERS += libcsupport/include/sys/event.h
include_sys_HEADERS += libcsupport/include/sys/filio.h
diff --git a/cpukit/posix/Makefile.am b/cpukit/posix/Makefile.am
index 346b65a..9d6fd48 100644
--- a/cpukit/posix/Makefile.am
+++ b/cpukit/posix/Makefile.am
@@ -91,7 +91,9 @@ libposix_a_SOURCES += src/cond.c src/condattrdestroy.c \
src/condtimedwait.c src/condwait.c src/condwaitsupp.c src/condget.c
## MEMORY_C_FILES
+libposix_a_SOURCES += src/mmap.c
libposix_a_SOURCES += src/mprotect.c
+libposix_a_SOURCES += src/munmap.c
## MESSAGE_QUEUE_C_FILES
libposix_a_SOURCES += src/mqueue.c src/mqueueclose.c \
diff --git a/cpukit/posix/include/sys/mman.h b/cpukit/posix/include/sys/mman.h
new file mode 100644
index 0000000..ddf34cc
--- /dev/null
+++ b/cpukit/posix/include/sys/mman.h
@@ -0,0 +1,189 @@
+/* $NetBSD: mman.h,v 1.36 2005/09/13 01:42:51 christos 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 8.2 (Berkeley) 1/9/95
+ */
+
+#ifndef _SYS_MMAN_H_
+#define _SYS_MMAN_H_
+
+#ifdef __rtems__
+
+#include <inttypes.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+#else /* __rtems__ */
+#include <sys/featuretest.h>
+
+#include <machine/ansi.h>
+
+#ifdef _BSD_SIZE_T_
+typedef _BSD_SIZE_T_ size_t;
+#undef _BSD_SIZE_T_
+#endif
+
+#include <sys/ansi.h>
+
+#ifndef mode_t
+typedef __mode_t mode_t;
+#define mode_t __mode_t
+#endif
+
+#ifndef off_t
+typedef __off_t off_t; /* file offset */
+#define off_t __off_t
+#endif
+#endif /* __rtems__ */
+
+
+/*
+ * 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 */
+
+#ifdef _KERNEL
+/*
+ * Deprecated flag; these are treated as MAP_PRIVATE internally by
+ * the kernel.
+ */
+#define MAP_COPY 0x0004 /* "copy" region at mmap time */
+#endif
+
+/*
+ * Other flags
+ */
+#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */
+#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */
+#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */
+#define MAP_INHERIT 0x0080 /* region is retained after exec */
+#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */
+#define MAP_TRYFIXED 0x0400 /* attempt hint address, even within break */
+#define MAP_WIRED 0x0800 /* mlock() mapping when it is established */
+
+/*
+ * Mapping type
+ */
+#define MAP_FILE 0x0000 /* map from file (default) */
+#define MAP_ANON 0x1000 /* allocated from memory, swap space */
+
+/*
+ * Alignment (expressed in log2). Must be >= log2(PAGE_SIZE) and
+ * < # bits in a pointer (26 (acorn26), 32 or 64).
+ */
+#define MAP_ALIGNED(n) ((n) << MAP_ALIGNMENT_SHIFT)
+#define MAP_ALIGNMENT_SHIFT 24
+#define MAP_ALIGNMENT_MASK MAP_ALIGNED(0xff)
+#define MAP_ALIGNMENT_64KB MAP_ALIGNED(16) /* 2^16 */
+#define MAP_ALIGNMENT_16MB MAP_ALIGNED(24) /* 2^24 */
+#define MAP_ALIGNMENT_4GB MAP_ALIGNED(32) /* 2^32 */
+#define MAP_ALIGNMENT_1TB MAP_ALIGNED(40) /* 2^40 */
+#define MAP_ALIGNMENT_256TB MAP_ALIGNED(48) /* 2^48 */
+#define MAP_ALIGNMENT_64PB MAP_ALIGNED(56) /* 2^56 */
+
+/*
+ * Error indicator returned by mmap(2)
+ */
+#define MAP_FAILED ((void *) -1) /* mmap() failed */
+
+/*
+ * Flags to msync
+ */
+#define MS_ASYNC 0x01 /* perform asynchronous writes */
+#define MS_INVALIDATE 0x02 /* invalidate cached data */
+#define MS_SYNC 0x04 /* perform synchronous writes */
+
+/*
+ * Flags to mlockall
+ */
+#define MCL_CURRENT 0x01 /* lock all pages currently mapped */
+#define MCL_FUTURE 0x02 /* lock all pages mapped in the future */
+
+#if defined(_NETBSD_SOURCE)
+/*
+ * 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 */
+#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
+#define MADV_FREE 6 /* pages are empty, free them */
+/*
+ * 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_DONATE_COPY 3 /* copy and delete -- not
+ implemented in UVM */
+#define MAP_INHERIT_DEFAULT MAP_INHERIT_COPY
+#endif
+
+#ifndef _KERNEL
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+void *mmap(void *, size_t, int, int, int, off_t);
+int munmap(void *, size_t);
+int mprotect(void *, size_t, int);
+#ifndef __LIBC12_SOURCE__
+#if defined(__rtems__)
+int msync(void *, size_t, int);
+#else
+int msync(void *, size_t, int) __RENAME(__msync13);
+#endif
+#endif
+int mlock(const void *, size_t);
+int munlock(const void *, size_t);
+int mlockall(int);
+int munlockall(void);
+#if defined(_NETBSD_SOURCE)
+int madvise(void *, size_t, int);
+int mincore(void *, size_t, char *);
+int minherit(void *, size_t, int);
+#endif
+__END_DECLS
+
+#endif /* !_KERNEL */
+
+#endif /* !_SYS_MMAN_H_ */
diff --git a/cpukit/posix/src/mmap.c b/cpukit/posix/src/mmap.c
new file mode 100644
index 0000000..2798326
--- /dev/null
+++ b/cpukit/posix/src/mmap.c
@@ -0,0 +1,26 @@
+/**
+ * @file
+ */
+
+/*
+ * COPYRIGHT (c) 2014.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/mman.h>
+
+int munmap(
+ void *addr __attribute__((unused)),
+ size_t length __attribute__((unused))
+)
+{
+ return -1;
+}
diff --git a/cpukit/posix/src/mprotect.c b/cpukit/posix/src/mprotect.c
index 51b565e..94bd316 100644
--- a/cpukit/posix/src/mprotect.c
+++ b/cpukit/posix/src/mprotect.c
@@ -28,16 +28,10 @@
#endif
#include <unistd.h>
-
-/*
- * RTEMS does not have <sys/mman.h> so we need a prototype here to
- * avoid warnings.
- */
-
-int mprotect( const void *, size_t, int );
+#include <sys/mman.h>
int mprotect(
- const void *addr __attribute__((unused)),
+ void *addr __attribute__((unused)),
size_t len __attribute__((unused)),
int prot __attribute__((unused)) )
{
diff --git a/cpukit/posix/src/munmap.c b/cpukit/posix/src/munmap.c
new file mode 100644
index 0000000..3ebb2f4
--- /dev/null
+++ b/cpukit/posix/src/munmap.c
@@ -0,0 +1,30 @@
+/**
+ * @file
+ */
+
+/*
+ * COPYRIGHT (c) 2014.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/mman.h>
+
+void *mmap(
+ void *addr __attribute__((unused)),
+ size_t lenhth __attribute__((unused)),
+ int prot __attribute__((unused)),
+ int flags __attribute__((unused)),
+ int fildes __attribute__((unused)),
+ off_t off
+)
+{
+ return NULL;
+}
diff --git a/cpukit/preinstall.am b/cpukit/preinstall.am
index 67add27..527142b 100644
--- a/cpukit/preinstall.am
+++ b/cpukit/preinstall.am
@@ -59,6 +59,10 @@ $(PROJECT_INCLUDE)/memory.h: include/memory.h $(PROJECT_INCLUDE)/$(dirstamp)
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/memory.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/memory.h
+$(PROJECT_INCLUDE)/sys/mman.h: posix/include/sys/mman.h $(PROJECT_INCLUDE)/sys/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/sys/mman.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/sys/mman.h
+
$(PROJECT_INCLUDE)/sys/ioccom.h: libcsupport/include/sys/ioccom.h $(PROJECT_INCLUDE)/sys/$(dirstamp)
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/sys/ioccom.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/sys/ioccom.h
More information about the vc
mailing list