--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/openenvcore/libc/src/ipc/shm.cpp	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,125 @@
+/*
+* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Implementation of shared memory (POSIX Standard).
+*
+*/
+
+
+// INCLUDE FILES
+#include <errno.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <unistd.h>
+#include "sysreent.h"
+ 
+
+// -----------------------------------------------------------------------------
+// Funcation name: shmget
+// Description: Get shared memory identifier using the IPC key generated by ftok.
+// Returns: None zero number (shared memory identifier): On success
+//          -1              : On error.
+// In case of error, errno value set to
+//          EACCES - Operation permission is denied to the calling process, see IPC.
+//          EINVAL - The value of semid is not a valid semaphore identifier, or the
+//                   value of semnum is less than 0 or greater than or equal to
+//                   sem_nsems, or the value of cmd is not a valid command.
+//          EPERM -  The argument cmd is equal to IPC_RMID or IPC_SET and the effective
+//                   user ID of the calling process is not equal to that of a process
+//                   with appropriate privileges and it is not equal to the value of
+//                   sem_perm.cuid or sem_perm.uid in the data structure associated
+//                   with semid.
+//          ERANGE - The argument cmd is equal to SETVAL or SETALL and the value to
+//                   which semval is to be set is greater than the system-imposed
+//                   maximum.
+// -----------------------------------------------------------------------------
+//
+
+extern "C" {
+
+EXPORT_C int shmget(key_t key, int size, int shmflg)
+    {
+        return _shmget_r(&errno, key, size, shmflg);
+    }
+
+// -----------------------------------------------------------------------------
+// Funcation name: shmat
+// Description: Attaches the shared memory segment associated with the shared
+//              memory identifier specified by shmid to the address space of
+//              the calling process.
+// Returns: Segment's start address: On success
+//          -1   : On error.
+// In case of error, errno value set to
+//          EACCES - Operation permission is denied to the calling process.
+//          EINVAL - The value of shmid is not a valid shared memory identifier;
+//                   the shmaddr is not a null pointer and the value of
+//                   (shmaddr-((ptrdiff_t)shmaddr%SHMLBA)) is an illegal
+//                   address for attaching shared memory; or the shmaddr is not
+//                   a null pointer, (shmflg&SHM_RND) is 0 and the value of
+//                   shmaddr is an illegal address for attaching shared memory.
+//          EMFILE - The number of shared memory segments attached to the calling
+//                   process would exceed the system-imposed limit.
+//          ENOMEM - The available data space is not large enough to accommodate
+//                   the shared memory segment.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void* shmat(int shmid, const void *shmaddr, int shmflg)
+    {
+    return _shmat_r(&errno, shmid, shmaddr, shmflg);
+    }
+
+// -----------------------------------------------------------------------------
+// Funcation name: shmdt
+// Description: Detaches the shared memory segment located at the address
+//              specified by shmaddr from the address space of the calling process.
+// Returns: 0    : On success.
+//          -1   : On error.
+// In case of error, errno value set to
+//          EINVAL - The value of shmaddr is not the data segment start
+//                   address of a shared memory segment.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C int shmdt(const void *shmaddr)
+    {
+    return _shmdt_r(&errno, shmaddr);
+    }
+
+// -----------------------------------------------------------------------------
+// Funcation name: shmctl
+// Description: Provides a variety of shared memory control operations as
+//              specified by cmd.
+// Returns: 0  : On success
+//          -1 : On error.
+// In case of error, errno value set to
+//          EACCES - The argument cmd is equal to IPC_STAT and the calling
+//                   process does not have read permission.
+//          EINVAL- The value of shmid is not a valid shared memory
+//                   identifier, or the value of cmd is not a valid command.
+//          EPERM - The argument cmd is equal to IPC_RMID or IPC_SET and the
+//                  effective user ID of the calling process is not equal to
+//                  that of a process with appropriate privileges and it is
+//                  not equal to the value of shm_perm.cuid or shm_perm.uid
+//                  in the data structure associated with shmid.
+//          EOVERFLO - The cmd argument is IPC_STAT and the gid or uid value
+//                     is too large to be stored in the structure pointed to
+//                     by the buf argument
+// -----------------------------------------------------------------------------
+//
+EXPORT_C int shmctl(int shmid, int cmd, struct shmid_ds *buf)
+    {
+    return _shmctl_r(&errno, shmid, cmd, buf);
+    }
+
+} // extern "C" {
+
+//  End of File