Add shared memory initializatin logic

include/nuttx/shm.h

@@ -0,0 +1,123 @@
+/****************************************************************************
+ * include/nuttx/shm.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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 NuttX 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_NUTTX_SHM_H
+#define __INCLUDE_NUTTX_SHM_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#ifdef CONFIG_MM_SHM
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_ARCH_ADDRENV
+#  error CONFIG_ARCH_ADDRENV must be selected with CONFIG_MM_SHM
+#endif
+
+#ifndef CONFIG_BUILD_KERNEL
+#  error CONFIG_BUILD_KERNEL must be selected with CONFIG_MM_SHM
+#endif
+
+#ifndef CONFIG_GRAN
+#  error CONFIG_GRAN must be selected with CONFIG_MM_SHM
+#endif
+
+#ifdef CONFIG_GRAN_SINGLE
+#  error CONFIG_GRAN_SINGLE must NOT be selected with CONFIG_MM_SHM
+#endif
+
+#ifndef CONFIG_MM_PGALLOC
+#  error CONFIG_MM_PGALLOC must be selected with CONFIG_MM_SHM
+#endif
+
+/* Debug */
+
+#ifdef CONFIG_CPP_HAVE_VARARGS
+#  ifdef CONFIG_DEBUG_SHM
+#    define shmdbg(format, ...)       dbg(format, ##__VA_ARGS__)
+#    define shmvdbg(format, ...)      vdbg(format, ##__VA_ARGS__)
+#  else
+#    define shmdbg(format, ...)       mdbg(format, ##__VA_ARGS__)
+#    define shmvdbg(format, ...)      mvdbg(format, ##__VA_ARGS__)
+#  endif
+#else
+#  ifdef CONFIG_DEBUG_SHM
+#    define shmdbg                    dbg
+#    define shmvdbg                   vdbg
+#  else
+#    define shmdbg                    (void)
+#    define shmvdbg                   (void)
+#  endif
+#endif
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: shm_initialize
+ *
+ * Description:
+ *   Perform one time, start-up initialization of the shared memor logic.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void shm_initialize(void);
+
+#endif /* CONFIG_MM_SHM */
+#endif /* __INCLUDE_NUTTX_SHM_H */

include/sys/ipc.h

@@ -89,10 +89,12 @@ extern "C"
 
 struct ipc_perm
 {
+#if 0 /* User and group IDs not yet supported by NuttX */
   uid_t  uid;    /* Owner's user ID */
   gid_t  gid;    /* Owner's group ID */
   uid_t  cuid;   /* Creator's user ID */
   gid_t  cgid;   /* Creator's group ID */
+#endif
   mode_t mode;   /* Read/write permission */
 };
 

include/sys/shm.h

@@ -49,6 +49,7 @@
 /****************************************************************************
  * Pre-Processor Definitions
  ****************************************************************************/
+/* Definitions required by POSIX */
 
 #define SHM_RDONLY 0x01 /* Attach read-only (else read-write) */
 #define SHM_RND    0x02 /* Round attach address to SHMLBA */