[rtems commit] posix: shared memory support
Gedare Bloom
gedare at rtems.org
Fri Jan 13 17:40:02 UTC 2017
Module: rtems
Branch: master
Commit: ba77628250ae7158db363fc0d7886ebd43e9cb69
Changeset: http://git.rtems.org/rtems/commit/?id=ba77628250ae7158db363fc0d7886ebd43e9cb69
Author: Gedare Bloom <gedare at rtems.org>
Date: Fri Aug 12 15:25:10 2016 -0400
posix: shared memory support
Add POSIX shared memory manager (Shm). Includes a hook-based
approach for the backing memory storage that defaults to the
Workspace, and a test is provided using the heap. A test is
also provided for the basic use of mmap'ing a shared memory
object. This test currently fails at the mmap stage due to
no support for mmap.
---
cpukit/posix/Makefile.am | 5 +
cpukit/posix/include/rtems/posix/config.h | 5 +
cpukit/posix/include/rtems/posix/shm.h | 182 +++++++++++++++++
cpukit/posix/include/rtems/posix/shmimpl.h | 115 +++++++++++
cpukit/posix/preinstall.am | 8 +
cpukit/posix/src/shm.c | 48 +++++
cpukit/posix/src/shmheap.c | 90 ++++++++
cpukit/posix/src/shmopen.c | 283 +++++++++++++++++++++++++-
cpukit/posix/src/shmunlink.c | 30 ++-
cpukit/posix/src/shmwkspace.c | 78 +++++++
cpukit/rtems/src/rtemsobjectgetapiclassname.c | 1 +
cpukit/sapi/include/confdefs.h | 39 ++++
cpukit/score/include/rtems/score/objectimpl.h | 5 +-
cpukit/score/include/rtems/sysinit.h | 1 +
testsuites/psxtests/Makefile.am | 4 +-
testsuites/psxtests/configure.ac | 2 +
testsuites/psxtests/psxshm01/Makefile.am | 22 ++
testsuites/psxtests/psxshm01/init.c | 91 +++++++++
testsuites/psxtests/psxshm01/psxshm01.scn | 0
testsuites/psxtests/psxshm01/system.h | 29 +++
testsuites/psxtests/psxshm02/Makefile.am | 22 ++
testsuites/psxtests/psxshm02/init.c | 91 +++++++++
testsuites/psxtests/psxshm02/psxshm02.scn | 0
testsuites/psxtests/psxshm02/system.h | 38 ++++
testsuites/sptests/spsysinit01/init.c | 17 ++
25 files changed, 1196 insertions(+), 10 deletions(-)
diff --git a/cpukit/posix/Makefile.am b/cpukit/posix/Makefile.am
index 53faace..48617cc 100644
--- a/cpukit/posix/Makefile.am
+++ b/cpukit/posix/Makefile.am
@@ -41,6 +41,8 @@ include_rtems_posix_HEADERS += include/rtems/posix/psignalimpl.h
include_rtems_posix_HEADERS += include/rtems/posix/pthread.h
include_rtems_posix_HEADERS += include/rtems/posix/pthreadimpl.h
include_rtems_posix_HEADERS += include/rtems/posix/ptimer.h
+include_rtems_posix_HEADERS += include/rtems/posix/shm.h
+include_rtems_posix_HEADERS += include/rtems/posix/shmimpl.h
include_rtems_posix_HEADERS += include/rtems/posix/semaphore.h
include_rtems_posix_HEADERS += include/rtems/posix/semaphoreimpl.h
include_rtems_posix_HEADERS += include/rtems/posix/threadsup.h
@@ -98,8 +100,11 @@ libposix_a_SOURCES += src/munlockall.c
libposix_a_SOURCES += src/munlock.c
libposix_a_SOURCES += src/munmap.c
libposix_a_SOURCES += src/posix_madvise.c
+libposix_a_SOURCES += src/shm.c
+libposix_a_SOURCES += src/shmheap.c
libposix_a_SOURCES += src/shmopen.c
libposix_a_SOURCES += src/shmunlink.c
+libposix_a_SOURCES += src/shmwkspace.c
## MESSAGE_QUEUE_C_FILES
libposix_a_SOURCES += src/mqueue.c src/mqueueclose.c \
diff --git a/cpukit/posix/include/rtems/posix/config.h b/cpukit/posix/include/rtems/posix/config.h
index 11c73c2..6c74216 100644
--- a/cpukit/posix/include/rtems/posix/config.h
+++ b/cpukit/posix/include/rtems/posix/config.h
@@ -111,6 +111,11 @@ typedef struct {
uint32_t maximum_rwlocks;
/**
+ * Maximum configured number of POSIX Shared memory objects.
+ */
+ uint32_t maximum_shms;
+
+ /**
* This field contains the number of POSIX API Initialization
* threads listed in @a User_initialization_thread_table.
*/
diff --git a/cpukit/posix/include/rtems/posix/shm.h b/cpukit/posix/include/rtems/posix/shm.h
new file mode 100644
index 0000000..dfdd58e
--- /dev/null
+++ b/cpukit/posix/include/rtems/posix/shm.h
@@ -0,0 +1,182 @@
+/**
+ * @file
+ *
+ * @brief Internal Support for POSIX Shared Memory
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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.
+ */
+
+#ifndef _RTEMS_POSIX_SHM_H
+#define _RTEMS_POSIX_SHM_H
+
+#include <rtems/score/object.h>
+#include <rtems/score/threadq.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup POSIXShmPrivate POSIX Shared Memory Private Support
+ *
+ * @ingroup POSIXAPI
+ *
+ * Internal implementation support for POSIX shared memory.
+ * @{
+ */
+typedef struct POSIX_Shm_Object_operations POSIX_Shm_Object_operations;
+extern const POSIX_Shm_Object_operations _POSIX_Shm_Object_operations;
+
+/**
+ * @brief Encapsulation for the storage and manipulation of shm objects.
+ */
+typedef struct {
+ /**
+ * @brief The handle is private for finding object storage.
+ */
+ void *handle;
+
+ /**
+ * @brief The number of bytes allocated to the object. A size of 0 with
+ * a handle of NULL means no object is allocated.
+ */
+ size_t size;
+
+ /**
+ * @brief Implementation-specific operations on shm objects.
+ */
+ const POSIX_Shm_Object_operations *ops;
+} POSIX_Shm_Object;
+
+/**
+ * @brief Operations on POSIX Shared Memory Objects.
+ */
+struct POSIX_Shm_Object_operations {
+ /**
+ * @brief Allocates a new @a shm_obj with initial @a size.
+ *
+ * New shared memory is initialized to zeroes.
+ *
+ * Returns 0 for success.
+ */
+ int ( *object_create ) ( POSIX_Shm_Object *shm_obj, size_t size );
+
+ /**
+ * @brief Changes the @a shm_obj size to @a size.
+ *
+ * Zeroes out the portion of the shared memory object that shrinks or grows.
+ *
+ * Returns 0 for success.
+ */
+ int ( *object_resize ) ( POSIX_Shm_Object *shm_obj, size_t size );
+
+ /**
+ * @brief Deletes the @a shm_obj.
+ *
+ * Zeroes out the memory.
+ *
+ * Returns 0 for success.
+ */
+ int ( *object_delete ) ( POSIX_Shm_Object *shm_obj );
+
+ /**
+ * @brief Copies up to @count bytes of the @a shm_obj data into @a buf.
+ *
+ * Returns the number of bytes read (copied) into @a buf.
+ */
+ int ( *object_read ) ( POSIX_Shm_Object *shm_obj, void *buf, size_t count );
+};
+
+/**
+ * @brief Control for a POSIX Shared Memory Object
+ */
+typedef struct {
+ Objects_Control Object;
+ Thread_queue_Control Wait_queue;
+
+ int reference_count;
+
+ POSIX_Shm_Object shm_object;
+
+ uid_t uid;
+ gid_t gid;
+ mode_t mode;
+
+ time_t atime;
+ time_t mtime;
+ time_t ctime;
+} POSIX_Shm_Control;
+
+/**
+ * @brief object_create operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_create_from_workspace(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+);
+
+/**
+ * @brief object_delete operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_delete_from_workspace( POSIX_Shm_Object *shm_obj );
+
+/**
+ * @brief object_resize operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_resize_from_workspace(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+);
+
+/**
+ * @brief object_read operation for shm objects stored in RTEMS Workspace.
+ */
+extern int _POSIX_Shm_Object_read_from_workspace(
+ POSIX_Shm_Object *shm_obj,
+ void *buf,
+ size_t count
+);
+
+/**
+ * @brief object_create operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_create_from_heap(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+);
+
+/**
+ * @brief object_delete operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_delete_from_heap( POSIX_Shm_Object *shm_obj );
+
+/**
+ * @brief object_resize operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_resize_from_heap(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+);
+
+/**
+ * @brief object_read operation for shm objects stored in C program heap.
+ */
+extern int _POSIX_Shm_Object_read_from_heap(
+ POSIX_Shm_Object *shm_obj,
+ void *buf,
+ size_t count
+);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/cpukit/posix/include/rtems/posix/shmimpl.h b/cpukit/posix/include/rtems/posix/shmimpl.h
new file mode 100644
index 0000000..207f50f
--- /dev/null
+++ b/cpukit/posix/include/rtems/posix/shmimpl.h
@@ -0,0 +1,115 @@
+/**
+ * @file
+ *
+ * @brief Private Support Information for POSIX Shared Memory
+ *
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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.
+ */
+
+#ifndef _RTEMS_POSIX_SHMIMPL_H
+#define _RTEMS_POSIX_SHMIMPL_H
+
+#include <rtems/fs.h>
+#include <rtems/libio.h>
+#include <rtems/posix/posixapi.h>
+#include <rtems/posix/shm.h>
+#include <rtems/score/objectimpl.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @ingroup POSIXShmPrivate
+ * @{
+ */
+
+extern Objects_Information _POSIX_Shm_Information;
+
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Acquire(
+ POSIX_Shm_Control *the_shm,
+ Thread_queue_Context *queue_context
+)
+{
+ _Thread_queue_Acquire(
+ &the_shm->Wait_queue,
+ queue_context
+ );
+}
+
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Release(
+ POSIX_Shm_Control *the_shm,
+ Thread_queue_Context *queue_context
+)
+{
+ _Thread_queue_Release( &the_shm->Wait_queue, queue_context );
+}
+
+RTEMS_INLINE_ROUTINE POSIX_Shm_Control *_POSIX_Shm_Allocate_unprotected( void )
+{
+ return (POSIX_Shm_Control *)
+ _Objects_Allocate_unprotected( &_POSIX_Shm_Information );
+}
+
+/**
+ * @brief POSIX Shared Memory Free
+ *
+ * This routine frees a shm control block.
+ */
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Free (
+ POSIX_Shm_Control *the_shm
+)
+{
+ _Objects_Free( &_POSIX_Shm_Information, &the_shm->Object );
+}
+
+RTEMS_INLINE_ROUTINE POSIX_Shm_Control *_POSIX_Shm_Get_by_name(
+ const char *name,
+ size_t *name_length_p,
+ Objects_Get_by_name_error *error
+)
+{
+ return (POSIX_Shm_Control *) _Objects_Get_by_name(
+ &_POSIX_Shm_Information,
+ name,
+ name_length_p,
+ error
+ );
+}
+
+RTEMS_INLINE_ROUTINE void _POSIX_Shm_Update_mtime_ctime(
+ POSIX_Shm_Control *shm
+)
+{
+ struct timeval now;
+ gettimeofday( &now, 0 );
+ shm->mtime = now.tv_sec;
+ shm->ctime = now.tv_sec;
+}
+
+static inline POSIX_Shm_Control* iop_to_shm( rtems_libio_t *iop )
+{
+ return (POSIX_Shm_Control*) iop->data1;
+}
+
+static inline POSIX_Shm_Control* loc_to_shm(
+ const rtems_filesystem_location_info_t *loc
+)
+{
+ return (POSIX_Shm_Control*) loc->node_access;
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/cpukit/posix/preinstall.am b/cpukit/posix/preinstall.am
index 41f7a26..1269280 100644
--- a/cpukit/posix/preinstall.am
+++ b/cpukit/posix/preinstall.am
@@ -108,6 +108,14 @@ $(PROJECT_INCLUDE)/rtems/posix/ptimer.h: include/rtems/posix/ptimer.h $(PROJECT_
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/ptimer.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/ptimer.h
+$(PROJECT_INCLUDE)/rtems/posix/shm.h: include/rtems/posix/shm.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/shm.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/shm.h
+
+$(PROJECT_INCLUDE)/rtems/posix/shmimpl.h: include/rtems/posix/shmimpl.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp)
+ $(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/shmimpl.h
+PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/shmimpl.h
+
$(PROJECT_INCLUDE)/rtems/posix/semaphore.h: include/rtems/posix/semaphore.h $(PROJECT_INCLUDE)/rtems/posix/$(dirstamp)
$(INSTALL_DATA) $< $(PROJECT_INCLUDE)/rtems/posix/semaphore.h
PREINSTALL_FILES += $(PROJECT_INCLUDE)/rtems/posix/semaphore.h
diff --git a/cpukit/posix/src/shm.c b/cpukit/posix/src/shm.c
new file mode 100644
index 0000000..7dca6bb
--- /dev/null
+++ b/cpukit/posix/src/shm.c
@@ -0,0 +1,48 @@
+/**
+ * @file
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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/stat.h>
+#include <fcntl.h>
+
+#include <rtems/system.h>
+#include <rtems/config.h>
+#include <rtems/libio.h>
+#include <rtems/sysinit.h>
+#include <rtems/posix/shmimpl.h>
+
+Objects_Information _POSIX_Shm_Information;
+
+static void _POSIX_Shm_Manager_initialization( void )
+{
+ _Objects_Initialize_information(
+ &_POSIX_Shm_Information, /* object information table */
+ OBJECTS_POSIX_API, /* object API */
+ OBJECTS_POSIX_SHMS, /* object class */
+ Configuration_POSIX_API.maximum_shms,
+ /* maximum objects of this class */
+ sizeof( POSIX_Shm_Control ),
+ /* size of this object's control block */
+ true, /* true if names for this object are strings */
+ _POSIX_PATH_MAX, /* maximum length of each object's name */
+ NULL /* Proxy extraction support callout */
+ );
+}
+
+RTEMS_SYSINIT_ITEM(
+ _POSIX_Shm_Manager_initialization,
+ RTEMS_SYSINIT_POSIX_SHM,
+ RTEMS_SYSINIT_ORDER_MIDDLE
+);
diff --git a/cpukit/posix/src/shmheap.c b/cpukit/posix/src/shmheap.c
new file mode 100644
index 0000000..3449c15
--- /dev/null
+++ b/cpukit/posix/src/shmheap.c
@@ -0,0 +1,90 @@
+/**
+ * @file
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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 <errno.h>
+#include <stdlib.h>
+#include <rtems/posix/shmimpl.h>
+
+int _POSIX_Shm_Object_create_from_heap(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+)
+{
+ void *p = calloc( 1, size ); /* get zero'd memory */
+ if ( p != NULL ) {
+ shm_obj->handle = p;
+ shm_obj->size = size;
+ } else {
+ errno = EIO;
+ }
+ return 0;
+}
+
+int _POSIX_Shm_Object_delete_from_heap( POSIX_Shm_Object *shm_obj )
+{
+ /* zero out memory before releasing it. */
+ memset( shm_obj->handle, 0, shm_obj->size );
+ free( shm_obj->handle );
+ shm_obj->handle = NULL;
+ shm_obj->size = 0;
+ return 0;
+}
+
+int _POSIX_Shm_Object_resize_from_heap(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+)
+{
+ void *p;
+ int err = 0;
+
+ if ( size < shm_obj->size ) {
+ /* zero out if shrinking */
+ p = (void*)((uintptr_t)shm_obj->handle + (uintptr_t)size);
+ memset( p, 0, shm_obj->size - size );
+ }
+ p = realloc( shm_obj->handle, size );
+ if ( p != NULL ) {
+ shm_obj->handle = p;
+ if ( size > shm_obj->size ) {
+ /* initialize added memory */
+ memset( p, 0, size - shm_obj->size );
+ }
+ shm_obj->size = size;
+ } else {
+ err = EIO;
+ }
+ return err;
+}
+
+int _POSIX_Shm_Object_read_from_heap(
+ POSIX_Shm_Object *shm_obj,
+ void *buf,
+ size_t count
+)
+{
+ if ( shm_obj == NULL || shm_obj->handle == NULL )
+ return 0;
+
+ if ( shm_obj->size < count ) {
+ count = shm_obj->size;
+ }
+
+ memcpy( buf, shm_obj->handle, count );
+
+ return count;
+}
+
diff --git a/cpukit/posix/src/shmopen.c b/cpukit/posix/src/shmopen.c
index abac3f4..fec443a 100644
--- a/cpukit/posix/src/shmopen.c
+++ b/cpukit/posix/src/shmopen.c
@@ -16,13 +16,288 @@
#include <sys/mman.h>
#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#include <rtems/libio_.h>
#include <rtems/seterr.h>
+#include <rtems/posix/shmimpl.h>
+#include <rtems/score/wkspace.h>
+
+static const rtems_filesystem_file_handlers_r shm_handlers;
+
+static int shm_fstat(
+ const rtems_filesystem_location_info_t *loc,
+ struct stat *buf
+)
+{
+ POSIX_Shm_Control *shm = loc_to_shm( loc );
+
+ if ( shm == NULL )
+ rtems_set_errno_and_return_minus_one( EIO );
+
+ /* mandatory for shm objects */
+ buf->st_uid = shm->uid;
+ buf->st_gid = shm->gid;
+ buf->st_size = shm->shm_object.size;
+ buf->st_mode = shm->mode;
+
+ /* optional for shm objects */
+ buf->st_atime = shm->atime;
+ buf->st_mtime = shm->mtime;
+ buf->st_ctime = shm->ctime;
+
+ return 0;
+}
+
+/* read() is unspecified for shared memory objects */
+static ssize_t shm_read( rtems_libio_t *iop, void *buffer, size_t count )
+{
+ Thread_queue_Context queue_context;
+ ssize_t bytes_read;
+ POSIX_Shm_Control *shm = iop_to_shm( iop );
+
+ _Thread_queue_Context_initialize( &queue_context );
+ _POSIX_Shm_Acquire( shm, &queue_context );
+ bytes_read = (*shm->shm_object.ops->object_read)(
+ &shm->shm_object,
+ buffer,
+ count
+ );
+ _POSIX_Shm_Release( shm, &queue_context );
+
+ return bytes_read;
+}
+
+static int shm_ftruncate( rtems_libio_t *iop, off_t length )
+{
+ Thread_queue_Context queue_context;
+ int err;
+ POSIX_Shm_Control *shm = iop_to_shm( iop );
+
+ _Thread_queue_Context_initialize( &queue_context );
+ _POSIX_Shm_Acquire( shm, &queue_context );
+
+ err = (*shm->shm_object.ops->object_resize)( &shm->shm_object, length );
+
+ if ( err != 0 ) {
+ _POSIX_Shm_Release( shm, &queue_context );
+ rtems_set_errno_and_return_minus_one( err );
+ }
+
+ _POSIX_Shm_Update_mtime_ctime( shm );
+
+ _POSIX_Shm_Release( shm, &queue_context );
+ return 0;
+}
+
+static int shm_close( rtems_libio_t *iop )
+{
+ POSIX_Shm_Control *shm = iop_to_shm( iop );
+ Objects_Control *obj;
+ ISR_lock_Context lock_ctx;
+ int err;
+
+ _Objects_Allocator_lock();
+
+ --shm->reference_count;
+ if ( shm->reference_count == 0 ) {
+ /* TODO: need to make sure this counts mmaps too! */
+ if ( (*shm->shm_object.ops->object_delete)( &shm->shm_object ) != 0 ) {
+ err = EIO;
+ }
+ /* check if the object has been unlinked yet. */
+ obj = _Objects_Get( shm->Object.id, &lock_ctx, &_POSIX_Shm_Information );
+ if ( obj == NULL ) {
+ /* if it was unlinked, then it can be freed. */
+ _POSIX_Shm_Free( shm );
+ } else {
+ /* it will be freed when it is unlinked. */
+ _ISR_lock_ISR_enable( &lock_ctx );
+ }
+ }
+ iop->pathinfo.node_access = NULL;
+
+ _Objects_Allocator_unlock();
+
+ if ( err != 0 ) {
+ rtems_set_errno_and_return_minus_one( err );
+ }
+ return 0;
+}
+
+static inline POSIX_Shm_Control *shm_allocate(
+ const char *name_arg,
+ size_t name_len,
+ int oflag,
+ mode_t mode,
+ int *error
+)
+{
+ POSIX_Shm_Control *shm;
+ char *name;
+ struct timeval tv;
+
+ /* Reject any name without a leading slash. */
+ if ( name_arg[0] != '/' ) {
+ *error = EINVAL;
+ return NULL;
+ }
+
+ /* Only create the object if requested. */
+ if ( ( oflag & O_CREAT ) != O_CREAT ) {
+ *error = ENOENT;
+ return NULL;
+ }
+
+ name = _Workspace_String_duplicate( name_arg, name_len );
+ if ( name == NULL ) {
+ *error = ENOSPC;
+ return NULL;
+ }
+
+ shm = _POSIX_Shm_Allocate_unprotected();
+ if ( shm == NULL ) {
+ _Workspace_Free( name );
+ *error = ENFILE;
+ return NULL;
+ }
+
+ gettimeofday( &tv, 0 );
+
+ shm->reference_count = 1;
+ shm->shm_object.handle = NULL;
+ shm->shm_object.size = 0;
+ shm->shm_object.ops = &_POSIX_Shm_Object_operations;
+ shm->mode = mode & ~rtems_filesystem_umask;
+ shm->uid = geteuid();
+ shm->gid = getegid();
+ shm->atime = (time_t) tv.tv_sec;
+ shm->mtime = (time_t) tv.tv_sec;
+ shm->ctime = (time_t) tv.tv_sec;
+
+ _Objects_Open_string( &_POSIX_Shm_Information, &shm->Object, name );
+
+ return shm;
+}
+
+static inline bool shm_access_ok( POSIX_Shm_Control *shm, int oflag )
+{
+ int flags;
+ if ( oflag & O_RDONLY ) {
+ flags = RTEMS_FS_PERMS_READ;
+ } else {
+ flags = RTEMS_FS_PERMS_WRITE;
+ }
+ return rtems_filesystem_check_access( flags, shm->mode, shm->uid, shm->gid );
+}
+
+static inline int shm_check_oflag( int oflag )
+{
+ if ( ( oflag & O_ACCMODE ) != O_RDONLY && ( oflag & O_ACCMODE ) != O_RDWR ) {
+ rtems_set_errno_and_return_minus_one( EACCES );
+ }
+
+ if ( ( oflag & ~( O_RDONLY | O_RDWR | O_CREAT | O_EXCL | O_TRUNC ) ) != 0 ) {
+ rtems_set_errno_and_return_minus_one( EACCES );
+ }
+
+ if ( ( oflag & O_TRUNC ) != 0 && ( oflag & O_ACCMODE ) != O_RDWR ) {
+ rtems_set_errno_and_return_minus_one( EACCES );
+ }
+ return 0;
+}
+
int shm_open( const char *name, int oflag, mode_t mode )
{
- (void) name;
- (void) oflag;
- (void) mode;
+ int err = 0;
+ int fd;
+ rtems_libio_t *iop;
+ POSIX_Shm_Control *shm;
+ size_t len;
+ Objects_Get_by_name_error obj_err;
+
+ if ( shm_check_oflag( oflag ) != 0 ) {
+ return -1;
+ }
+
+ iop = rtems_libio_allocate();
+ if ( iop == NULL ) {
+ rtems_set_errno_and_return_minus_one( EMFILE );
+ }
- rtems_set_errno_and_return_minus_one( EINVAL );
+ _Objects_Allocator_lock();
+ shm = _POSIX_Shm_Get_by_name( name, &len, &obj_err );
+
+ if ( shm == NULL ) {
+ switch ( obj_err ) {
+ case OBJECTS_GET_BY_NAME_INVALID_NAME:
+ err = EINVAL;
+ break;
+
+ case OBJECTS_GET_BY_NAME_NAME_TOO_LONG:
+ err = ENAMETOOLONG;
+ break;
+
+ case OBJECTS_GET_BY_NAME_NO_OBJECT:
+ default:
+ shm = shm_allocate(name, len, oflag, mode, &err);
+ break;
+ }
+ } else { /* shm exists */
+ if ( ( oflag & ( O_EXCL | O_CREAT ) ) == ( O_EXCL | O_CREAT ) ) {
+ /* Request to create failed. */
+ err = EEXIST;
+ } else if ( !shm_access_ok( shm, oflag ) ) {
+ err = EACCES;
+ } else {
+ ++shm->reference_count;
+ }
+ }
+ _Objects_Allocator_unlock();
+ if ( err != 0 ) {
+ rtems_libio_free( iop );
+ rtems_set_errno_and_return_minus_one( err );
+ }
+
+ if ( oflag & O_TRUNC ) {
+ err = shm_ftruncate( iop, 0 );
+ (void) err; /* ignore truncate error */
+ }
+
+ fd = rtems_libio_iop_to_descriptor( iop );
+ iop->flags |= LIBIO_FLAGS_CLOSE_ON_EXEC;
+ if ( oflag & O_RDONLY ) {
+ iop->flags |= LIBIO_FLAGS_READ;
+ } else {
+ iop->flags |= LIBIO_FLAGS_READ_WRITE;
+ }
+ iop->data0 = fd;
+ iop->data1 = shm;
+ iop->pathinfo.node_access = shm;
+ iop->pathinfo.handlers = &shm_handlers;
+ iop->pathinfo.mt_entry = &rtems_filesystem_null_mt_entry;
+ rtems_filesystem_location_add_to_mt_entry( &iop->pathinfo );
+
+ return fd;
}
+
+static const rtems_filesystem_file_handlers_r shm_handlers = {
+ .open_h = rtems_filesystem_default_open,
+ .close_h = shm_close,
+ .read_h = shm_read,
+ .write_h = rtems_filesystem_default_write,
+ .ioctl_h = rtems_filesystem_default_ioctl,
+ .lseek_h = rtems_filesystem_default_lseek,
+ .fstat_h = shm_fstat,
+ .ftruncate_h = shm_ftruncate,
+ .fsync_h = rtems_filesystem_default_fsync_or_fdatasync,
+ .fdatasync_h = rtems_filesystem_default_fsync_or_fdatasync,
+ .fcntl_h = rtems_filesystem_default_fcntl,
+ .kqfilter_h = rtems_filesystem_default_kqfilter,
+ .poll_h = rtems_filesystem_default_poll,
+ .readv_h = rtems_filesystem_default_readv,
+ .writev_h = rtems_filesystem_default_writev
+};
diff --git a/cpukit/posix/src/shmunlink.c b/cpukit/posix/src/shmunlink.c
index f559922..ab18450 100644
--- a/cpukit/posix/src/shmunlink.c
+++ b/cpukit/posix/src/shmunlink.c
@@ -18,9 +18,35 @@
#include <errno.h>
#include <rtems/seterr.h>
+#include <rtems/posix/shmimpl.h>
+
int shm_unlink( const char *name )
{
- (void) name;
+ Objects_Get_by_name_error obj_err;
+ int err = 0;
+ POSIX_Shm_Control *shm;
+
+ shm = _POSIX_Shm_Get_by_name( name, 0, &obj_err );
+ switch ( obj_err ) {
+ case OBJECTS_GET_BY_NAME_INVALID_NAME:
+ err = ENOENT;
+ break;
+
+ case OBJECTS_GET_BY_NAME_NAME_TOO_LONG:
+ err = ENAMETOOLONG;
+ break;
- rtems_set_errno_and_return_minus_one( ENOENT );
+ case OBJECTS_GET_BY_NAME_NO_OBJECT:
+ default:
+ _Objects_Close( &_POSIX_Shm_Information, &shm->Object );
+ if ( shm->reference_count == 0 ) {
+ /* TODO: need to make sure this counts mmaps too! */
+ /* only remove the shm object if no references exist to it. */
+ _POSIX_Shm_Free( shm );
+ }
+ break;
+ }
+ if ( err != 0 )
+ rtems_set_errno_and_return_minus_one( err );
+ return 0;
}
diff --git a/cpukit/posix/src/shmwkspace.c b/cpukit/posix/src/shmwkspace.c
new file mode 100644
index 0000000..6d6cd21
--- /dev/null
+++ b/cpukit/posix/src/shmwkspace.c
@@ -0,0 +1,78 @@
+/**
+ * @file
+ */
+
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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 <errno.h>
+#include <rtems/score/wkspace.h>
+#include <rtems/posix/shmimpl.h>
+
+int _POSIX_Shm_Object_create_from_workspace(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+)
+{
+ shm_obj->handle = _Workspace_Allocate_or_fatal_error( size );
+ memset( shm_obj->handle, 0, size );
+ shm_obj->size = size;
+ return 0;
+}
+
+int _POSIX_Shm_Object_delete_from_workspace( POSIX_Shm_Object *shm_obj )
+{
+ /* zero out memory before releasing it. */
+ memset( shm_obj->handle, 0, shm_obj->size );
+ _Workspace_Free( shm_obj->handle );
+ shm_obj->handle = NULL;
+ shm_obj->size = 0;
+ return 0;
+}
+
+int _POSIX_Shm_Object_resize_from_workspace(
+ POSIX_Shm_Object *shm_obj,
+ size_t size
+)
+{
+ int err;
+
+ if ( size == 0 ) {
+ err = _POSIX_Shm_Object_delete_from_workspace( shm_obj );
+ } else if ( shm_obj->handle == NULL && shm_obj->size == 0 ) {
+ err = _POSIX_Shm_Object_create_from_workspace( shm_obj, size );
+ } else {
+ /* Refuse to resize a workspace object. */
+ err = EIO;
+ }
+ return err;
+}
+
+int _POSIX_Shm_Object_read_from_workspace(
+ POSIX_Shm_Object *shm_obj,
+ void *buf,
+ size_t count
+)
+{
+ if ( shm_obj == NULL || shm_obj->handle == NULL )
+ return 0;
+
+ if ( shm_obj->size < count ) {
+ count = shm_obj->size;
+ }
+
+ memcpy( buf, shm_obj->handle, count );
+
+ return count;
+}
+
+
diff --git a/cpukit/rtems/src/rtemsobjectgetapiclassname.c b/cpukit/rtems/src/rtemsobjectgetapiclassname.c
index 07bfb1b..4d3b1cb 100644
--- a/cpukit/rtems/src/rtemsobjectgetapiclassname.c
+++ b/cpukit/rtems/src/rtemsobjectgetapiclassname.c
@@ -55,6 +55,7 @@ static const rtems_assoc_t rtems_object_api_posix_assoc[] = {
{ "Timer", OBJECTS_POSIX_TIMERS, 0},
{ "Barrier", OBJECTS_POSIX_BARRIERS, 0},
{ "RWLock", OBJECTS_POSIX_RWLOCKS, 0},
+ { "Shared Memory", OBJECTS_POSIX_SHMS, 0},
{ NULL, 0, 0}
};
#endif
diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h
index 12eec53..e00d079 100644
--- a/cpukit/sapi/include/confdefs.h
+++ b/cpukit/sapi/include/confdefs.h
@@ -2068,6 +2068,10 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
#define CONFIGURE_MAXIMUM_POSIX_RWLOCKS \
rtems_resource_unlimited(CONFIGURE_UNLIMITED_ALLOCATION_SIZE)
#endif
+ #if !defined(CONFIGURE_MAXIMUM_POSIX_SHMS)
+ #define CONFIGURE_MAXIMUM_POSIX_SHMS \
+ rtems_resource_unlimited(CONFIGURE_UNLIMITED_ALLOCATION_SIZE)
+ #endif
#endif /* RTEMS_POSIX_API */
#endif /* CONFIGURE_UNLIMITED_OBJECTS */
@@ -2464,6 +2468,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
#include <rtems/posix/pthread.h>
#include <rtems/posix/rwlock.h>
#include <rtems/posix/semaphore.h>
+ #include <rtems/posix/shm.h>
#include <rtems/posix/threadsup.h>
#include <rtems/posix/timer.h>
@@ -2626,6 +2631,34 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
#define CONFIGURE_MEMORY_FOR_POSIX_RWLOCKS(_rwlocks) \
_Configure_Object_RAM(_rwlocks, sizeof(POSIX_RWLock_Control) )
+ /**
+ * Configure the maximum number of POSIX shared memory objects.
+ */
+ #if !defined(CONFIGURE_MAXIMUM_POSIX_SHMS)
+ #define CONFIGURE_MAXIMUM_POSIX_SHMS 0
+ #else
+ #ifdef CONFIGURE_INIT
+ #if !defined(CONFIGURE_HAS_OWN_POSIX_SHM_OBJECT_OPERATIONS)
+ const POSIX_Shm_Object_operations _POSIX_Shm_Object_operations = {
+ _POSIX_Shm_Object_create_from_workspace,
+ _POSIX_Shm_Object_resize_from_workspace,
+ _POSIX_Shm_Object_delete_from_workspace,
+ _POSIX_Shm_Object_read_from_workspace
+ };
+ #endif
+ #endif
+ #endif
+
+ /**
+ * This macro is calculated to specify the memory required for
+ * POSIX API shared memory.
+ *
+ * This is an internal parameter.
+ */
+ #define CONFIGURE_MEMORY_FOR_POSIX_SHMS(_shms) \
+ _Configure_POSIX_Named_Object_RAM(_shms, sizeof(POSIX_Shm_Control) )
+
+
#ifdef CONFIGURE_POSIX_INIT_THREAD_TABLE
#ifdef CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE
@@ -2851,6 +2884,8 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
CONFIGURE_MEMORY_FOR_POSIX_BARRIERS(CONFIGURE_MAXIMUM_POSIX_BARRIERS) + \
CONFIGURE_MEMORY_FOR_POSIX_RWLOCKS( \
CONFIGURE_MAXIMUM_POSIX_RWLOCKS) + \
+ CONFIGURE_MEMORY_FOR_POSIX_SHMS( \
+ CONFIGURE_MAXIMUM_POSIX_SHMS) + \
CONFIGURE_MEMORY_FOR_POSIX_TIMERS(CONFIGURE_MAXIMUM_POSIX_TIMERS))
#else
/**
@@ -3333,6 +3368,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
CONFIGURE_MAXIMUM_POSIX_SEMAPHORES,
CONFIGURE_MAXIMUM_POSIX_BARRIERS,
CONFIGURE_MAXIMUM_POSIX_RWLOCKS,
+ CONFIGURE_MAXIMUM_POSIX_SHMS,
CONFIGURE_POSIX_INIT_THREAD_TABLE_SIZE,
CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME
};
@@ -3548,6 +3584,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
uint32_t POSIX_SEMAPHORES;
uint32_t POSIX_BARRIERS;
uint32_t POSIX_RWLOCKS;
+ uint32_t POSIX_SHMS;
#endif
/* Stack space sizes */
@@ -3601,6 +3638,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
CONFIGURE_MEMORY_FOR_POSIX_SEMAPHORES( CONFIGURE_MAXIMUM_POSIX_SEMAPHORES ),
CONFIGURE_MEMORY_FOR_POSIX_BARRIERS( CONFIGURE_MAXIMUM_POSIX_BARRIERS ),
CONFIGURE_MEMORY_FOR_POSIX_RWLOCKS( CONFIGURE_MAXIMUM_POSIX_RWLOCKS ),
+ CONFIGURE_MEMORY_FOR_POSIX_SHMS( CONFIGURE_MAXIMUM_POSIX_SHMS ),
CONFIGURE_MEMORY_FOR_POSIX_TIMERS( CONFIGURE_MAXIMUM_POSIX_TIMERS ),
#endif
@@ -3672,6 +3710,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[];
(CONFIGURE_MAXIMUM_POSIX_SEMAPHORES != 0) || \
(CONFIGURE_MAXIMUM_POSIX_BARRIERS != 0) || \
(CONFIGURE_MAXIMUM_POSIX_RWLOCKS != 0) || \
+ (CONFIGURE_MAXIMUM_POSIX_SHMS != 0) || \
defined(CONFIGURE_POSIX_INIT_THREAD_TABLE))
#error "CONFIGURATION ERROR: POSIX API support not configured!!"
#endif
diff --git a/cpukit/score/include/rtems/score/objectimpl.h b/cpukit/score/include/rtems/score/objectimpl.h
index 1ec688a..cd36ce6 100644
--- a/cpukit/score/include/rtems/score/objectimpl.h
+++ b/cpukit/score/include/rtems/score/objectimpl.h
@@ -92,11 +92,12 @@ typedef enum {
OBJECTS_POSIX_CONDITION_VARIABLES = 8,
OBJECTS_POSIX_TIMERS = 9,
OBJECTS_POSIX_BARRIERS = 10,
- OBJECTS_POSIX_RWLOCKS = 11
+ OBJECTS_POSIX_RWLOCKS = 11,
+ OBJECTS_POSIX_SHMS = 12
} Objects_POSIX_API;
/** This macro is used to generically specify the last API index. */
-#define OBJECTS_POSIX_CLASSES_LAST OBJECTS_POSIX_RWLOCKS
+#define OBJECTS_POSIX_CLASSES_LAST OBJECTS_POSIX_SHMS
/*
* For fake objects, which have an object identifier, but no objects
diff --git a/cpukit/score/include/rtems/sysinit.h b/cpukit/score/include/rtems/sysinit.h
index a0ab17c..7923385 100644
--- a/cpukit/score/include/rtems/sysinit.h
+++ b/cpukit/score/include/rtems/sysinit.h
@@ -54,6 +54,7 @@ extern "C" {
#define RTEMS_SYSINIT_POSIX_TIMER 000366
#define RTEMS_SYSINIT_POSIX_BARRIER 000367
#define RTEMS_SYSINIT_POSIX_RWLOCK 000368
+#define RTEMS_SYSINIT_POSIX_SHM 000369
#define RTEMS_SYSINIT_POSIX_CLEANUP 00036a
#define RTEMS_SYSINIT_POSIX_KEYS 00036b
#define RTEMS_SYSINIT_IDLE_THREADS 000380
diff --git a/testsuites/psxtests/Makefile.am b/testsuites/psxtests/Makefile.am
index e0ce36f..2bea8ab 100644
--- a/testsuites/psxtests/Makefile.am
+++ b/testsuites/psxtests/Makefile.am
@@ -10,8 +10,8 @@ _SUBDIRS += psxhdrs psx01 psx02 psx03 psx04 psx05 psx06 psx07 psx08 psx09 \
psxcancel psxcancel01 psxclassic01 psxcleanup psxcleanup01 \
psxconcurrency01 psxcond01 psxcond02 psxconfig01 psxenosys \
psxitimer psxmsgq01 psxmsgq02 psxmsgq03 psxmsgq04 \
- psxmutexattr01 psxobj01 psxrwlock01 psxsem01 psxsignal01 psxsignal02 \
- psxsignal03 psxsignal04 psxsignal05 psxsignal06 \
+ psxmutexattr01 psxobj01 psxrwlock01 psxsem01 psxshm01 psxshm02 \
+ psxsignal01 psxsignal02 psxsignal03 psxsignal04 psxsignal05 psxsignal06 \
psxspin01 psxsysconf \
psxtime psxtimer01 psxtimer02 psxualarm psxusleep psxfatal01 psxfatal02 \
psxintrcritical01 psxstack01 psxstack02 \
diff --git a/testsuites/psxtests/configure.ac b/testsuites/psxtests/configure.ac
index 7401258..77af14e 100644
--- a/testsuites/psxtests/configure.ac
+++ b/testsuites/psxtests/configure.ac
@@ -188,6 +188,8 @@ psxreaddir/Makefile
psxrdwrv/Makefile
psxrwlock01/Makefile
psxsem01/Makefile
+psxshm01/Makefile
+psxshm02/Makefile
psxsignal01/Makefile
psxsignal02/Makefile
psxsignal03/Makefile
diff --git a/testsuites/psxtests/psxshm01/Makefile.am b/testsuites/psxtests/psxshm01/Makefile.am
new file mode 100644
index 0000000..7082a50
--- /dev/null
+++ b/testsuites/psxtests/psxshm01/Makefile.am
@@ -0,0 +1,22 @@
+
+rtems_tests_PROGRAMS = psxshm01
+psxshm01_SOURCES = init.c system.h
+
+dist_rtems_tests_DATA = psxshm01.scn
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+
+AM_CPPFLAGS += -I$(top_srcdir)/include
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(psxshm01_OBJECTS)
+LINK_LIBS = $(psxshm01_LDLIBS)
+
+psxshm01$(EXEEXT): $(psxshm01_OBJECTS) $(psxshm01_DEPENDENCIES)
+ @rm -f psxshm01$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/psxtests/psxshm01/init.c b/testsuites/psxtests/psxshm01/init.c
new file mode 100644
index 0000000..24c9b96
--- /dev/null
+++ b/testsuites/psxtests/psxshm01/init.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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.
+ */
+
+/*
+ * From http://pubs.opengroup.org/onlinepubs/9699919799/functions/shm_open.html
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define CONFIGURE_INIT
+#include "system.h"
+#include "pritime.h"
+
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+const char rtems_test_name[] = "PSX SHM01";
+
+#define MAX_LEN 10000
+struct region { /* Defines "structure" of shared memory */
+ int len;
+ char buf[MAX_LEN];
+};
+
+void *POSIX_Init(
+ void *argument
+)
+{
+ struct region *p;
+ int fd;
+ int err;
+ char *name = "/shm";
+
+ TEST_BEGIN();
+
+ puts( "Init: shm_open" );
+ fd = shm_open( name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR );
+ if ( fd == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( fd != -1 );
+ }
+
+ puts( "Init: ftruncate" );
+ err = ftruncate( fd, sizeof( struct region ) );
+ if ( err == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( err != -1 );
+ }
+
+ puts( "Init: mmap" );
+ p = mmap(
+ NULL,
+ sizeof( struct region ),
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd,
+ 0
+ );
+ rtems_test_assert( p != MAP_FAILED );
+
+ puts( "Init: write to mapped region" );
+ p->len = MAX_LEN;
+
+ puts( "Init: munmap" );
+ err = munmap( p, sizeof( struct region ) );
+ if ( err == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( err != -1 );
+ }
+
+ puts( "Init: close" );
+ err = close( fd );
+ if ( err == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( err != -1 );
+ }
+
+ TEST_END();
+
+ rtems_test_exit(0);
+ return 0;
+}
diff --git a/testsuites/psxtests/psxshm01/psxshm01.scn b/testsuites/psxtests/psxshm01/psxshm01.scn
new file mode 100644
index 0000000..e69de29
diff --git a/testsuites/psxtests/psxshm01/system.h b/testsuites/psxtests/psxshm01/system.h
new file mode 100644
index 0000000..531a926
--- /dev/null
+++ b/testsuites/psxtests/psxshm01/system.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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.
+ */
+
+#include <pmacros.h>
+#include <unistd.h>
+#include <errno.h>
+
+void *POSIX_Init(
+ void *argument
+);
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_MAXIMUM_POSIX_THREADS 1
+#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 10
+#define CONFIGURE_MAXIMUM_POSIX_SHMS 1
+#define CONFIGURE_MEMORY_OVERHEAD 10
+
+#define CONFIGURE_POSIX_INIT_THREAD_TABLE
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/psxtests/psxshm02/Makefile.am b/testsuites/psxtests/psxshm02/Makefile.am
new file mode 100644
index 0000000..c174b0c
--- /dev/null
+++ b/testsuites/psxtests/psxshm02/Makefile.am
@@ -0,0 +1,22 @@
+
+rtems_tests_PROGRAMS = psxshm02
+psxshm02_SOURCES = init.c system.h
+
+dist_rtems_tests_DATA = psxshm02.scn
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP at .cfg
+include $(top_srcdir)/../automake/compile.am
+include $(top_srcdir)/../automake/leaf.am
+
+
+AM_CPPFLAGS += -I$(top_srcdir)/include
+AM_CPPFLAGS += -I$(top_srcdir)/../support/include
+
+LINK_OBJS = $(psxshm02_OBJECTS)
+LINK_LIBS = $(psxshm02_LDLIBS)
+
+psxshm02$(EXEEXT): $(psxshm02_OBJECTS) $(psxshm02_DEPENDENCIES)
+ @rm -f psxshm02$(EXEEXT)
+ $(make-exe)
+
+include $(top_srcdir)/../automake/local.am
diff --git a/testsuites/psxtests/psxshm02/init.c b/testsuites/psxtests/psxshm02/init.c
new file mode 100644
index 0000000..29dea97
--- /dev/null
+++ b/testsuites/psxtests/psxshm02/init.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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.
+ */
+
+/*
+ * From http://pubs.opengroup.org/onlinepubs/9699919799/functions/shm_open.html
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#define CONFIGURE_INIT
+#include "system.h"
+#include "pritime.h"
+
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+
+const char rtems_test_name[] = "PSX SHM02";
+
+#define MAX_LEN 10000
+struct region { /* Defines "structure" of shared memory */
+ int len;
+ char buf[MAX_LEN];
+};
+
+void *POSIX_Init(
+ void *argument
+)
+{
+ struct region *p;
+ int fd;
+ int err;
+ char *name = "/shm";
+
+ TEST_BEGIN();
+
+ puts( "Init: shm_open" );
+ fd = shm_open( name, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR );
+ if ( fd == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( fd != -1 );
+ }
+
+ puts( "Init: ftruncate" );
+ err = ftruncate( fd, sizeof( struct region ) );
+ if ( err == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( err != -1 );
+ }
+
+ puts( "Init: mmap" );
+ p = mmap(
+ NULL,
+ sizeof( struct region ),
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ fd,
+ 0
+ );
+ rtems_test_assert( p != MAP_FAILED );
+
+ puts( "Init: write to mapped region" );
+ p->len = MAX_LEN;
+
+ puts( "Init: munmap" );
+ err = munmap( p, sizeof( struct region ) );
+ if ( err == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( err != -1 );
+ }
+
+ puts( "Init: close" );
+ err = close( fd );
+ if ( err == -1 ) {
+ printf ( "Error: %s\n", strerror(errno) );
+ rtems_test_assert( err != -1 );
+ }
+
+ TEST_END();
+
+ rtems_test_exit(0);
+ return 0;
+}
diff --git a/testsuites/psxtests/psxshm02/psxshm02.scn b/testsuites/psxtests/psxshm02/psxshm02.scn
new file mode 100644
index 0000000..e69de29
diff --git a/testsuites/psxtests/psxshm02/system.h b/testsuites/psxtests/psxshm02/system.h
new file mode 100644
index 0000000..d02c87f
--- /dev/null
+++ b/testsuites/psxtests/psxshm02/system.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2016 Gedare Bloom.
+ *
+ * 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.
+ */
+
+#include <pmacros.h>
+#include <unistd.h>
+#include <errno.h>
+
+void *POSIX_Init(
+ void *argument
+);
+
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_MAXIMUM_POSIX_THREADS 1
+#define CONFIGURE_LIBIO_MAXIMUM_FILE_DESCRIPTORS 10
+#define CONFIGURE_MAXIMUM_POSIX_SHMS 1
+#define CONFIGURE_MEMORY_OVERHEAD 10
+
+#define CONFIGURE_POSIX_INIT_THREAD_TABLE
+
+#include <rtems/posix/shm.h>
+const POSIX_Shm_Object_operations _POSIX_Shm_Object_operations = {
+ _POSIX_Shm_Object_create_from_heap,
+ _POSIX_Shm_Object_resize_from_heap,
+ _POSIX_Shm_Object_delete_from_heap,
+ _POSIX_Shm_Object_read_from_heap
+};
+#define CONFIGURE_HAS_OWN_POSIX_SHM_OBJECT_OPERATIONS
+
+#include <rtems/confdefs.h>
diff --git a/testsuites/sptests/spsysinit01/init.c b/testsuites/sptests/spsysinit01/init.c
index b81fbab..15072c3 100644
--- a/testsuites/sptests/spsysinit01/init.c
+++ b/testsuites/sptests/spsysinit01/init.c
@@ -43,6 +43,7 @@
#include <rtems/posix/pthreadimpl.h>
#include <rtems/posix/rwlockimpl.h>
#include <rtems/posix/semaphoreimpl.h>
+#include <rtems/posix/shmimpl.h>
#include <rtems/posix/timerimpl.h>
#endif /* RTEMS_POSIX_API */
#include <rtems/posix/keyimpl.h>
@@ -117,6 +118,8 @@ typedef enum {
POSIX_BARRIER_POST,
POSIX_RWLOCK_PRE,
POSIX_RWLOCK_POST,
+ POSIX_SHM_PRE,
+ POSIX_SHM_POST,
POSIX_CLEANUP_PRE,
POSIX_CLEANUP_POST,
#endif /* RTEMS_POSIX_API */
@@ -524,6 +527,18 @@ LAST(RTEMS_SYSINIT_POSIX_RWLOCK)
next_step(POSIX_RWLOCK_POST);
}
+FIRST(RTEMS_SYSINIT_POSIX_SHM)
+{
+ assert(_POSIX_Shm_Information.maximum == 0);
+ next_step(POSIX_SHM_PRE);
+}
+
+LAST(RTEMS_SYSINIT_POSIX_SHM)
+{
+ assert(_POSIX_Shm_Information.maximum != 0);
+ next_step(POSIX_SHM_POST);
+}
+
static size_t user_extensions_pre_posix_cleanup;
FIRST(RTEMS_SYSINIT_POSIX_CLEANUP)
@@ -752,6 +767,8 @@ static void *POSIX_Init(void *arg)
#define CONFIGURE_MAXIMUM_POSIX_SEMAPHORES 1
+#define CONFIGURE_MAXIMUM_POSIX_SHMS 1
+
#define CONFIGURE_MAXIMUM_POSIX_TIMERS 1
#define CONFIGURE_MAXIMUM_POSIX_THREADS 1
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