Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3

15 files changed, 2147 insertions, 0 deletions

diff --git a/nuttx/include/sys/ioctl.h b/nuttx/include/sys/ioctl.h
new file mode 100644
index 000000000..3d1874869
--- /dev/null
+++ b/nuttx/include/sys/ioctl.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+ * include/sys/ioctl.h
+ *
+ *   Copyright (C) 2007, 2008, 2012 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_SYS_IOCTL_H
+#define __INCLUDE_SYS_IOCTL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/* Get NuttX configuration and NuttX-specific IOCTL definitions */
+
+#include <nuttx/config.h>
+#include <nuttx/fs/ioctl.h>
+
+/* Include network ioctls info */
+
+#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0
+# include <nuttx/net/ioctl.h>
+#endif
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* ioctl() is a non-standard UNIX-like API */
+
+EXTERN int ioctl(int fd, int req, unsigned long arg);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_IOCTL_H */
diff --git a/nuttx/include/sys/mman.h b/nuttx/include/sys/mman.h
new file mode 100644
index 000000000..ab847b97a
--- /dev/null
+++ b/nuttx/include/sys/mman.h
@@ -0,0 +1,113 @@
+/****************************************************************************
+ * include/sys/mman.h
+ *
+ *   Copyright (C) 2008, 2009, 2011 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_SYS_MMAN_H
+#define __INCLUDE_SYS_MMAN_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Protections are chosen from these bits, OR'd together.  NuttX does not
+ * support any of these, but are provided for source level compatibility
+ */
+
+#define PROT_NONE       0x0             /* Page may not be accessed */
+#define PROT_READ       0x1             /* Page may be read */
+#define PROT_WRITE      0x2             /* Page may be written */
+#define PROT_EXEC       0x4             /* Page may be executed */
+
+/* Sharing types -- ignored by NuttX. */
+
+#define MAP_SHARED      0x00001         /* Share this mapping */
+#define MAP_PRIVATE     0x00002         /* Create a private copy-on-write mapping */
+#define MAP_TYPE        0x0000f         /* Mask for type of mapping */
+#define MAP_FIXED       0x00010         /* Map to specified address exactly */
+#define MAP_FILE        0x00000         /* The mapping is backed by a file */
+#define MAP_ANONYMOUS   0x00020         /* The mapping is not backed by any file */
+#define MAP_ANON        MAP_ANONYMOUS
+
+/* These are Linux-specific.  */
+
+#define MAP_GROWSDOWN   0x00100         /* Used to stack allocations */
+#define MAP_DENYWRITE   0x00800         /* Do not permit writes to file */
+#define MAP_EXECUTABLE  0x01000         /* Mark it as an executable */
+#define MAP_LOCKED      0x02000         /* Lock pages mapped into memory */
+#define MAP_NORESERVE   0x04000         /* Do not reserve swap space for this mapping */
+#define MAP_POPULATE    0x08000         /* Populate (prefault) pagetables */
+#define MAP_NONBLOCK    0x10000         /* Do not block on IO */
+
+/* Failure return */
+
+#define MAP_FAILED      ((void*)-1)
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN FAR void *mmap(FAR void *start, size_t length, int prot, int flags,
+                      int fd, off_t offset);
+
+#ifdef CONFIG_FS_RAMMAP
+EXTERN int munmap(FAR void *start, size_t length);
+#else
+#  define munmap(start, length)
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_MMAN_H */
diff --git a/nuttx/include/sys/mount.h b/nuttx/include/sys/mount.h
new file mode 100644
index 000000000..194dec8cc
--- /dev/null
+++ b/nuttx/include/sys/mount.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+ * include/sys/mount.h
+ *
+ *   Copyright (C) 2007-2009 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_SYS_MOUNT_H
+#define __INCLUDE_SYS_MOUNT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Mount flags */
+
+#define MS_RDONLY 1 /* Mount file system read-only */
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+ 
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN int mount(const char *source, const char *target,
+                 const char *filesystemtype, unsigned long mountflags,
+                 const void *data);
+EXTERN int umount(const char *target);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_MOUNT_H */
diff --git a/nuttx/include/sys/prctl.h b/nuttx/include/sys/prctl.h
new file mode 100644
index 000000000..f1441a77a
--- /dev/null
+++ b/nuttx/include/sys/prctl.h
@@ -0,0 +1,114 @@
+/****************************************************************************
+ * include/sys/prctl.h
+ *
+ *   Copyright (C) 2012 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_SYS_PRCTL_H
+#define __INCLUDE_SYS_PRCTL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Supported prctl() commands.
+ *
+ *  PR_SET_NAME
+ *    Set the task (or thread) name for the thread whose ID is in required
+ *    arg2 (int), using the value in the location pointed to by required arg1
+ *    (char*).  The name can be up to CONFIG_TASK_NAME_SIZE long (including
+ *    any null termination).  The thread ID of 0 will set the name of the
+ *    calling thread. As an example:
+ *
+ *      prctl(PR_SET_NAME, "MyName", 0);
+ *
+ *  PR_GET_NAME
+ *    Return the task (or thread) name for the for the thread whose ID is
+ *    optional arg2 (int), in the buffer pointed to by optional arg1 (char *).
+ *    The buffer must be CONFIG_TASK_NAME_SIZE long (including any null
+ *    termination). As an example:
+ *
+ *      char myname[CONFIG_TASK_NAME_SIZE];
+ *      prctl(PR_GET_NAME, myname, 0);
+ */
+
+ #define PR_SET_NAME 1
+ #define PR_GET_NAME 2
+ 
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+ 
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Name: prctl
+ *
+ * Description:
+ *   prctl() is called with a first argument describing what to do (with
+ *   values PR_* defined above) and with additional arguments depending on
+ *   the specific command.
+ *
+ * Returned Value:
+ *   The returned value may depend on the specific commnand.  For PR_SET_NAME
+ *   and PR_GET_NAME, the returned value of 0 indicates successful operation.
+ *   On any failure, -1 is retruend and the errno value is set appropriately.
+ *
+ *     EINVAL The value of 'option' is not recognized.
+ *     EFAULT optional arg1 is not a valid address.
+ *     ESRCH  No task/thread can be found corresponding to that specified
+ *       by optional arg1. 
+ *   
+ ****************************************************************************/
+
+EXTERN int prctl(int option, ...);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_PRCTL_H */
diff --git a/nuttx/include/sys/select.h b/nuttx/include/sys/select.h
new file mode 100644
index 000000000..1ff074b6c
--- /dev/null
+++ b/nuttx/include/sys/select.h
@@ -0,0 +1,121 @@
+/****************************************************************************
+ * include/sys/select.h
+ *
+ *   Copyright (C) 2008-2009, 2011 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_SYS_SELECT_H
+#define __INCLUDE_SYS_SELECT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <time.h>
+
+#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* Get the total number of descriptors that we will have to support */
+
+#define __SELECT_NDESCRIPTORS (CONFIG_NFILE_DESCRIPTORS + CONFIG_NSOCKET_DESCRIPTORS)
+
+/* We will use a 32-bit bitsets to represent the set of descriptors.  How
+ * many uint32_t's do we need to span all descriptors?
+ */
+
+#if __SELECT_NDESCRIPTORS <= 32
+#  define __SELECT_NUINT32 1
+#elif __SELECT_NDESCRIPTORS <= 64
+#  define __SELECT_NUINT32 2
+#elif __SELECT_NDESCRIPTORS <= 96
+#  define __SELECT_NUINT32 3
+#elif __SELECT_NDESCRIPTORS <= 128
+#  define __SELECT_NUINT32 4
+#elif __SELECT_NDESCRIPTORS <= 160
+#  define __SELECT_NUINT32 5
+#elif __SELECT_NDESCRIPTORS <= 192
+#  define __SELECT_NUINT32 6
+#elif __SELECT_NDESCRIPTORS <= 224
+#  define __SELECT_NUINT32 7
+#elif __SELECT_NDESCRIPTORS <= 256
+#  define __SELECT_NUINT32 8
+#else
+#  warning "Large fd_set needed"
+#endif
+
+/* These macros map a file descripto to an index and bit number */
+
+#define _FD_NDX(fd) ((fd) >> 5)
+#define _FD_BIT(fd) ((fd) & 0x1f)
+
+/* Standard helper macros */
+
+#define FD_CLR(fd,set)    (((uint32_t*)(set))[_FD_NDX(fd)] &= ~(1 << _FD_BIT(fd)))
+#define FD_SET(fd,set)    (((uint32_t*)(set))[_FD_NDX(fd)] |= (1 << _FD_BIT(fd)))
+#define FD_ISSET(fd,set)  ((((uint32_t*)(set))[_FD_NDX(fd)] & (1 << _FD_BIT(fd))) != 0)
+#define FD_ZERO(set)      memset(set, 0, sizeof(fd_set))
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+typedef uint32_t fd_set[__SELECT_NUINT32];
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN int select(int nfds, FAR fd_set *readfds, FAR fd_set *writefds,
+                  FAR fd_set *exceptfds, FAR struct timeval *timeout);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* CONFIG_NFILE_DESCRIPTORS || CONFIG_NSOCKET_DESCRIPTORS */
+#endif /* __INCLUDE_SYS_SELECT_H */
diff --git a/nuttx/include/sys/sendfile.h b/nuttx/include/sys/sendfile.h
new file mode 100644
index 000000000..0f3c05444
--- /dev/null
+++ b/nuttx/include/sys/sendfile.h
@@ -0,0 +1,123 @@
+/****************************************************************************
+ * include/sys/sendfile.h
+ *
+ *   Copyright (C) 2012 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_SYS_SENDFILE_H
+#define __INCLUDE_SYS_SENDFILE_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_LIB_SENDFILE_BUFSIZE
+#  define CONFIG_LIB_SENDFILE_BUFSIZE 512
+#endif
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/************************************************************************
+ * Name: sendfile
+ *
+ * Description:
+ *   sendfile() copies data between one file descriptor and another.
+ *   sendfile() basically just wraps a sequence of reads() and writes()
+ *   to perform a copy.  It serves a purpose in systems where there is
+ *   a penalty for copies to between user and kernal space, but really
+ *   nothing in NuttX but provide some Linux compatible (and adding
+ *   another 'almost standard' interface). 
+ *
+ *   NOTE: This interface is *not* specified in POSIX.1-2001, or other
+ *   standards.  The implementation here is very similar to the Linux
+ *   sendfile interface.  Other UNIX systems implement sendfile() with
+ *   different semantics and prototypes.  sendfile() should not be used
+ *   in portable programs.
+ *
+ * Input Parmeters:
+ *   infd   - A file (or socket) descriptor opened for reading
+ *   outfd  - A descriptor opened for writing.
+ *   offset - If 'offset' is not NULL, then it points to a variable
+ *            holding the file offset from which sendfile() will start
+ *            reading data from 'infd'.  When sendfile() returns, this
+ *            variable will be set to the offset of the byte following
+ *            the last byte that was read.  If 'offset' is not NULL,
+ *            then sendfile() does not modify the current file offset of
+ *            'infd'; otherwise the current file offset is adjusted to
+ *            reflect the number of bytes read from 'infd.'
+ *
+ *            If 'offset' is NULL, then data will be read from 'infd'
+ *            starting at the current file offset, and the file offset
+ *            will be updated by the call.
+ *   count -  The number of bytes to copy between the file descriptors.
+ *
+ * Returned Value:
+ *   If the transfer was successful, the number of bytes written to outfd is
+ *   returned.  On error, -1 is returned, and errno is set appropriately.
+ *   There error values are those returned by read() or write() plus:
+ *
+ *   EINVAL - Bad input parameters.
+ *   ENOMEM - Could not allocated an I/O buffer
+ *
+ ************************************************************************/
+
+EXTERN ssize_t sendfile (int outfd, int infd, FAR off_t *offset, size_t count);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_SENDFILE_H */
diff --git a/nuttx/include/sys/socket.h b/nuttx/include/sys/socket.h
new file mode 100644
index 000000000..89ade941f
--- /dev/null
+++ b/nuttx/include/sys/socket.h
@@ -0,0 +1,234 @@
+/****************************************************************************
+ * include/sys/socket.h
+ *
+ *   Copyright (C) 2007, 2009, 2011 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_SYS_SOCKET_H
+#define __INCLUDE_SYS_SOCKET_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/types.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* The socket()domain parameter specifies a communication domain; this selects
+ * the protocol family which will be used for communication.
+ */
+
+/* Protocol families */
+
+#define PF_UNSPEC       0 /* Protocol family unspecified */
+#define PF_UNIX         1 /* Local communication */
+#define PF_LOCAL        1 /* Local communication */
+#define PF_INET         2 /* IPv4 Internet protocols */
+#define PF_INET6        3 /* IPv6 Internet protocols */
+#define PF_IPX          4 /* IPX - Novell protocols */
+#define PF_NETLINK      5 /* Kernel user interface device */
+#define PF_X25          6 /* ITU-T X.25 / ISO-8208 protocol */
+#define PF_AX25         7 /* Amateur radio AX.25 protocol */
+#define PF_ATMPVC       8 /* Access to raw ATM PVCs */
+#define PF_APPLETALK    9 /* Appletalk */
+#define PF_PACKET      10 /* Low level packet interface */
+
+/* Address families */
+
+#define AF_UNSPEC      PF_UNSPEC
+#define AF_UNIX        PF_UNIX
+#define AF_LOCAL       PF_LOCAL
+#define AF_INET        PF_INET
+#define AF_INET6       PF_INET6
+#define AF_IPX         PF_IPX
+#define AF_NETLINK     PF_NETLINK
+#define AF_X25         PF_X25
+#define AF_AX25        PF_AX25
+#define AF_ATMPVC      PF_ATMPVC
+#define AF_APPLETALK   PF_APPLETALK
+#define AF_PACKET      PF_PACKET
+
+/* The socket created by socket() has the indicated type, which specifies
+ * the communication semantics.
+ */
+
+#define SOCK_STREAM    0 /* Provides sequenced, reliable, two-way, connection-based byte streams.
+                          * An  out-of-band data transmission mechanism may be supported. */
+#define SOCK_DGRAM     1 /* Supports  datagrams (connectionless, unreliable messages of a fixed
+                          * maximum length). */
+#define SOCK_SEQPACKET 2 /* Provides a sequenced, reliable, two-way connection-based data
+                          * transmission path for datagrams of fixed maximum length; a consumer
+                          * is required to read an entire packet with each read system call. */
+#define SOCK_RAW       3 /* Provides raw network protocol access. */
+#define SOCK_RDM       4 /* Provides a reliable datagram layer that does not guarantee ordering. */
+#define SOCK_PACKET    5 /* Obsolete and should not be used in new programs */
+
+/* Bits in the FLAGS argument to `send', `recv', et al. These are the bits
+ * recognized by Linus, not all are supported by NuttX.
+ */
+
+#define MSG_OOB        0x0001 /* Process out-of-band data.  */
+#define MSG_PEEK       0x0002 /* Peek at incoming messages.  */
+#define MSG_DONTROUTE  0x0004 /* Don't use local routing.  */
+#define MSG_CTRUNC     0x0008 /* Control data lost before delivery.  */
+#define MSG_PROXY      0x0010 /* Supply or ask second address.  */
+#define MSG_TRUNC      0x0020
+#define MSG_DONTWAIT   0x0040 /* Enable nonblocking IO.  */
+#define MSG_EOR        0x0080 /* End of record.  */
+#define MSG_WAITALL    0x0100 /* Wait for a full request.  */
+#define MSG_FIN        0x0200
+#define MSG_SYN        0x0400
+#define MSG_CONFIRM    0x0800 /* Confirm path validity.  */
+#define MSG_RST        0x1000
+#define MSG_ERRQUEUE   0x2000 /* Fetch message from error queue.  */
+#define MSG_NOSIGNAL   0x4000 /* Do not generate SIGPIPE.  */
+#define MSG_MORE       0x8000 /* Sender will send more.  */
+
+/* Socket options */
+
+#define SO_DEBUG        0 /* Enables recording of debugging information (get/set).
+                           * arg: pointer to integer containing a boolean value */
+#define SO_ACCEPTCONN   1 /* Reports whether socket listening is enabled (get only).
+                           * arg: pointer to integer containing a boolean value */
+#define SO_BROADCAST    2 /* Permits sending of broadcast messages (get/set).
+                           * arg: pointer to integer containing a boolean value */
+#define SO_REUSEADDR    3 /* Allow reuse of local addresses (get/set)
+                           * arg: pointer to integer containing a boolean value */
+#define SO_KEEPALIVE    4 /* Keeps connections active by enabling the periodic transmission
+                           * of messages (get/set).
+                           * arg: pointer to integer containing a boolean value */
+#define SO_LINGER       5 /* Lingers on a close() if data is present (get/set)
+                           * arg: struct linger */
+#define SO_OOBINLINE    6 /* Leaves received out-of-band data (data marked urgent) inline
+                           * (get/set) arg: pointer to integer containing a boolean value */
+#define SO_SNDBUF       7 /* Sets send buffer size. arg: integer value (get/set). */
+#define SO_RCVBUF       8 /* Sets receive buffer size. arg: integer value (get/set). */
+#define SO_ERROR        9 /* Reports and clears error status (get only).  arg: returns
+                           * an integer value */
+#define SO_TYPE        10 /* Reports the socket type (get only). return: int */
+#define SO_DONTROUTE   11 /* Requests that outgoing messages bypass standard routing (get/set)
+                           * arg: pointer to integer containing a boolean value */
+#define SO_RCVLOWAT    12 /* Sets the minimum number of bytes to process for socket input
+                           * (get/set). arg: integer value */
+#define SO_RCVTIMEO    13 /* Sets the timeout value that specifies the maximum amount of time
+                           * an input function waits until it completes (get/set).
+                           * arg: struct timeval */
+#define SO_SNDLOWAT    14 /* Sets the minimum number of bytes to process for socket output
+                           * (get/set). arg: integer value */
+#define SO_SNDTIMEO    15 /* Sets the timeout value specifying the amount of time that an
+                           * output function blocks because flow control prevents data from
+                           * being sent(get/set). arg: struct timeval */
+
+/* Protocol levels supported by get/setsockopt(): */
+
+#define SOL_SOCKET     0  /* Only socket-level options supported */
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+ /* sockaddr_storage structure. This structure must be (1) large enough to
+  * accommodate all supported protocol-specific address structures, and (2)
+  * aligned at an appropriate boundary so that pointers to it can be cast
+  * as pointers to protocol-specific address structures and used to access
+  * the fields of those structures without alignment problems
+  */
+
+#ifdef CONFIG_NET_IPv6
+struct sockaddr_storage
+{
+  sa_family_t ss_family;       /* Address family */
+  char        ss_data[18];     /* 18-bytes of address data */
+};
+#else
+struct sockaddr_storage
+{
+  sa_family_t ss_family;       /* Address family */
+  char        ss_data[14];     /* 14-bytes of address data */
+};
+#endif
+
+/* The sockaddr structure is used to define a socket address which is used
+ * in the bind(), connect(), getpeername(), getsockname(), recvfrom(), and
+ * sendto() functions.
+ */
+
+struct sockaddr
+{
+  sa_family_t sa_family;       /* Address family: See AF_* definitions */
+  char        sa_data[14];     /* 14-bytes of address data */
+};
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN int socket(int domain, int type, int protocol);
+EXTERN int bind(int sockfd, FAR const struct sockaddr *addr, socklen_t addrlen);
+EXTERN int connect(int sockfd, FAR const struct sockaddr *addr, socklen_t addrlen);
+
+EXTERN int listen(int sockfd, int backlog);
+EXTERN int accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
+
+EXTERN ssize_t send(int sockfd, FAR const void *buf, size_t len, int flags);
+EXTERN ssize_t sendto(int sockfd, FAR const void *buf, size_t len, int flags,
+                      FAR const struct sockaddr *to, socklen_t tolen);
+
+EXTERN ssize_t recv(int sockfd, FAR void *buf, size_t len, int flags);
+EXTERN ssize_t recvfrom(int sockfd, FAR void *buf, size_t len, int flags,
+                        FAR struct sockaddr *from, FAR socklen_t *fromlen);
+
+EXTERN int setsockopt(int sockfd, int level, int option,
+                      FAR const void *value, socklen_t value_len);
+EXTERN int getsockopt(int sockfd, int level, int option,
+                      FAR void *value, FAR socklen_t *value_len);
+
+EXTERN int getsockname(int sockfd, FAR struct sockaddr *addr,
+                       FAR socklen_t *addrlen);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_SOCKET_H */
diff --git a/nuttx/include/sys/sockio.h b/nuttx/include/sys/sockio.h
new file mode 100644
index 000000000..abfc2f562
--- /dev/null
+++ b/nuttx/include/sys/sockio.h
@@ -0,0 +1,120 @@
+/****************************************************************************
+ * include/sys/sockio.h
+ *
+ *   Copyright (C) 2010, 2012 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_SYS_SOCKIO_H
+#define __INCLUDE_SYS_SOCKIO_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/* Get NuttX configuration and NuttX-specific network IOCTL definitions */
+
+#include <nuttx/config.h>
+#include <nuttx/fs/ioctl.h>
+#include <nuttx/net/ioctl.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+#define IMSFNAMSIZ 8
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+ /* RFC3678: IPv4 Options
+  *
+  * o  ioctl() SIOCGIPMSFILTER: to retrieve the list of source addresses
+  *    that comprise the source filter along with the current filter mode.
+  *
+  * o  ioctl() SIOCSIPMSFILTER: to set or modify the source filter content
+  *    (e.g., unicast source address list) or mode (exclude or include).
+  *
+  * Ioctl option                  Argument type
+  * ----------------------------- ----------------------
+  * SIOCGIPMSFILTER               struct ip_msfilter
+  * SIOCSIPMSFILTER               struct ip_msfilter
+  *
+  * The imsf_fmode mode is a 32-bit integer that identifies the filter
+  * mode.  The value of this field must be either MCAST_INCLUDE or
+  * MCAST_EXCLUDE, which are likewise defined in <netinet/in.h>.
+  */
+
+#if 0 /* REVISIT: Current NuttX implementation is non-standard.
+       * Lookup is by device name, not IP address.
+       */
+
+struct ip_msfilter
+{
+   struct in_addr imsf_multiaddr;  /* IP multicast address of group */
+   struct in_addr imsf_interface;  /* Local IP address of interface */
+   uint32_t       imsf_fmode;      /* Filter mode */
+#ifdef CONFIG_NET_IGMPv3
+   uint32_t       imsf_numsrc;     /* number of sources in src_list */
+   struct in_addr imsf_slist[1];   /* start of source list */
+#endif
+};
+
+#else
+
+struct ip_msfilter  
+{
+   char imsf_name[IMSFNAMSIZ];     /* Network device name, e.g., "eth0" */
+   struct in_addr imsf_multiaddr;  /* IP multicast address of group */
+   uint32_t       imsf_fmode;      /* Filter mode */
+};
+
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_SOCKIO_H */
diff --git a/nuttx/include/sys/stat.h b/nuttx/include/sys/stat.h
new file mode 100644
index 000000000..1204b15aa
--- /dev/null
+++ b/nuttx/include/sys/stat.h
@@ -0,0 +1,134 @@
+/****************************************************************************
+ * include/sys/stat.h
+ *
+ *   Copyright (C) 2007-2009, 2012 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_SYS_STAT_H
+#define __INCLUDE_SYS_STAT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/types.h>
+#include <time.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* mode_t bit settings (most of these do not apply to Nuttx). This assumes
+ * that the full size of a mode_t is 16-bits. (However, mode_t must be size
+ * 'int' because it is promoted to size int when passed in varargs).
+ */
+
+#define S_IXOTH     0000001 /* Permissions for others: RWX */
+#define S_IWOTH     0000002
+#define S_IROTH     0000004
+#define S_IRWXO     0000007
+
+#define S_IXGRP     0000010 /* Group permissions: RWX */
+#define S_IWGRP     0000020
+#define S_IRGRP     0000040
+#define S_IRWXG     0000070
+
+#define S_IXUSR     0000100 /* Owner permissions: RWX */
+#define S_IWUSR     0000200
+#define S_IRUSR     0000400
+#define S_IRWXU     0000700
+
+#define S_ISVTX     0001000 /* "sticky" bit */
+#define S_ISGID     0002000 /* Set group ID bit */
+#define S_ISUID     0004000 /* Set UID bit */
+
+#define S_IFIFO     0010000 /* File type bites */
+#define S_IFCHR     0020000
+#define S_IFDIR     0040000
+#define S_IFBLK     0060000
+#define S_IFREG     0100000
+#define S_IFLNK     0120000
+#define S_IFSOCK    0140000
+#define S_IFMT      0170000
+
+/* File type macros that operate on an instance of mode_t */
+
+#define S_ISLNK(m)  (((m) & S_IFMT) == S_IFLNK)
+#define S_ISREG(m)  (((m) & S_IFMT) == S_IFREG)
+#define S_ISDIR(m)  (((m) & S_IFMT) == S_IFDIR)
+#define S_ISCHR(m)  (((m) & S_IFMT) == S_IFCHR)
+#define S_ISBLK(m)  (((m) & S_IFMT) == S_IFBLK)
+#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
+#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+/* This is the simplified struct stat as returned by fstat(). This structure
+ * provides information about a specific file or directory in the file system.
+ */
+
+struct stat
+{
+  mode_t    st_mode;    /* File type, atributes, and access mode bits */
+  off_t     st_size;    /* Size of file/directory, in bytes */
+  blksize_t st_blksize; /* Blocksize used for filesystem I/O */
+  blkcnt_t  st_blocks;  /* Number of blocks allocated */
+  time_t    st_atime;   /* Time of last access */
+  time_t    st_mtime;   /* Time of last modification */
+  time_t    st_ctime;   /* Time of last status change */
+};
+
+/****************************************************************************
+ * Global Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN int mkdir(FAR const char *pathname, mode_t mode);
+EXTERN int mkfifo(FAR const char *pathname, mode_t mode);
+EXTERN int stat(const char *path, FAR struct stat *buf);
+EXTERN int fstat(int fd, FAR struct stat *buf);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_STAT_H */
diff --git a/nuttx/include/sys/statfs.h b/nuttx/include/sys/statfs.h
new file mode 100644
index 000000000..70e963dd9
--- /dev/null
+++ b/nuttx/include/sys/statfs.h
@@ -0,0 +1,145 @@
+/****************************************************************************
+ * include/sys/statfs.h
+ *
+ *   Copyright (C) 2007-2009, 2011 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_SYS_STATFS_H
+#define __INCLUDE_SYS_STATFS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <stdint.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* struct statfs file system types. */
+
+#define ADFS_SUPER_MAGIC      0xadf5
+#define AFFS_SUPER_MAGIC      0xadff
+#define BEFS_SUPER_MAGIC      0x42465331
+#define BFS_MAGIC             0x1badface
+#define CIFS_MAGIC_NUMBER     0xff534d42
+#define CODA_SUPER_MAGIC      0x73757245
+#define COH_SUPER_MAGIC       0x012ff7b7
+#define CRAMFS_MAGIC          0x28cd3d45
+#define DEVFS_SUPER_MAGIC     0x1373
+#define EFS_SUPER_MAGIC       0x00414a53
+#define EXT_SUPER_MAGIC       0x137d
+#define EXT2_OLD_SUPER_MAGIC  0xef51
+#define EXT2_SUPER_MAGIC      0xef53
+#define EXT3_SUPER_MAGIC      0xef53
+#define HFS_SUPER_MAGIC       0x4244
+#define HPFS_SUPER_MAGIC      0xf995e849
+#define HUGETLBFS_MAGIC       0x958458f6
+#define ISOFS_SUPER_MAGIC     0x9660
+#define JFFS2_SUPER_MAGIC     0x72b6
+#define JFS_SUPER_MAGIC       0x3153464a
+#define MINIX_SUPER_MAGIC     0x137f /* orig. minix */
+#define MINIX_SUPER_MAGIC2    0x138f /* 30 char minix */
+#define MINIX2_SUPER_MAGIC    0x2468 /* minix V2 */
+#define MINIX2_SUPER_MAGIC2   0x2478 /* minix V2, 30 char names */
+#define MSDOS_SUPER_MAGIC     0x4d44
+#define NCP_SUPER_MAGIC       0x564c
+#define NFS_SUPER_MAGIC       0x6969
+#define NTFS_SB_MAGIC         0x5346544e
+#define OPENPROM_SUPER_MAGIC  0x9fa1
+#define PROC_SUPER_MAGIC      0x9fa0
+#define QNX4_SUPER_MAGIC      0x002f
+#define REISERFS_SUPER_MAGIC  0x52654973
+#define ROMFS_MAGIC           0x7275
+#define SMB_SUPER_MAGIC       0x517B
+#define SYSV2_SUPER_MAGIC     0x012ff7b6
+#define SYSV4_SUPER_MAGIC     0x012FF7B5
+#define TMPFS_MAGIC           0x01021994
+#define UDF_SUPER_MAGIC       0x15013346
+#define UFS_MAGIC             0x00011954
+#define USBDEVICE_SUPER_MAGIC 0x9fa2
+#define VXFS_SUPER_MAGIC      0xa501fcf5
+#define XENIX_SUPER_MAGIC     0x012ff7b4
+#define XFS_SUPER_MAGIC       0x58465342
+#define _XIAFS_SUPER_MAGIC    0x012fd16d
+
+/* NuttX specific file-systems */
+
+#define BINFS_MAGIC           0x4242
+#define NXFFS_MAGIC           0x4747
+
+/****************************************************************************
+ * Type Definitions
+ ****************************************************************************/
+
+struct statfs
+{
+  uint32_t f_type;     /* Type of filesystem (see definitions above) */
+  size_t   f_namelen;  /* Maximum length of filenames */
+  size_t   f_bsize;    /* Optimal block size for transfers */
+  off_t    f_blocks;   /* Total data blocks in the file system of this size */
+  off_t    f_bfree;    /* Free blocks in the file system */
+  off_t    f_bavail;   /* Free blocks avail to non-superuser */
+  off_t    f_files;    /* Total file nodes in the file system */
+  off_t    f_ffree;    /* Free file nodes in the file system */
+};
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* Inspired by Linux statfs() which was, in turn, inspired by
+ * the BSD statfs(). None of these implementations agree in the
+ * form of the struct statfs.
+ */
+
+EXTERN int statfs(const char *path, struct statfs *buf);
+EXTERN int fstatfs(int fd, struct statfs *buf);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_STATFS_H */
diff --git a/nuttx/include/sys/syscall.h b/nuttx/include/sys/syscall.h
new file mode 100644
index 000000000..57545beb7
--- /dev/null
+++ b/nuttx/include/sys/syscall.h
@@ -0,0 +1,398 @@
+/****************************************************************************
+ * include/sys/syscall.h
+ * This file contains the system call numbers.
+ *
+ *   Copyright (C) 2011-2012 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_SYS_SYSCALL_H
+#define __INCLUDE_SYS_SYSCALL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+#  include <stdint.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Reserve the first system calls for platform-specific usage if so
+ * configured.
+ */
+
+#ifndef CONFIG_SYS_RESERVED
+#  define CONFIG_SYS_RESERVED          (0)
+#endif
+
+/* System call numbers
+ *
+ * These first system calls are supported regardless of the NuttX
+ * configuration
+ */
+
+#define SYS__exit                      (CONFIG_SYS_RESERVED+0)
+#define SYS_exit                       (CONFIG_SYS_RESERVED+1)
+#define SYS_get_errno                  (CONFIG_SYS_RESERVED+2)
+#define SYS_getpid                     (CONFIG_SYS_RESERVED+3)
+#define SYS_sched_getparam             (CONFIG_SYS_RESERVED+4)
+#define SYS_sched_getscheduler         (CONFIG_SYS_RESERVED+5)
+#define SYS_sched_lock                 (CONFIG_SYS_RESERVED+6)
+#define SYS_sched_lockcount            (CONFIG_SYS_RESERVED+7)
+#define SYS_sched_rr_get_interval      (CONFIG_SYS_RESERVED+8)
+#define SYS_sched_setparam             (CONFIG_SYS_RESERVED+9)
+#define SYS_sched_setscheduler         (CONFIG_SYS_RESERVED+10)
+#define SYS_sched_unlock               (CONFIG_SYS_RESERVED+11)
+#define SYS_sched_yield                (CONFIG_SYS_RESERVED+12)
+#define SYS_sem_close                  (CONFIG_SYS_RESERVED+13)
+#define SYS_sem_destroy                (CONFIG_SYS_RESERVED+14)
+#define SYS_sem_open                   (CONFIG_SYS_RESERVED+15)
+#define SYS_sem_post                   (CONFIG_SYS_RESERVED+16)
+#define SYS_sem_trywait                (CONFIG_SYS_RESERVED+17)
+#define SYS_sem_unlink                 (CONFIG_SYS_RESERVED+18)
+#define SYS_sem_wait                   (CONFIG_SYS_RESERVED+19)
+#define SYS_set_errno                  (CONFIG_SYS_RESERVED+20)
+#define SYS_task_create                (CONFIG_SYS_RESERVED+21)
+#define SYS_task_delete                (CONFIG_SYS_RESERVED+22)
+#define SYS_task_restart               (CONFIG_SYS_RESERVED+23)
+#define SYS_up_assert                  (CONFIG_SYS_RESERVED+24)
+#define SYS_up_assert_code             (CONFIG_SYS_RESERVED+25)
+#define __SYS_atexit                   (CONFIG_SYS_RESERVED+26)
+
+/* The following can be individually enabled */
+
+#ifdef CONFIG_SCHED_ATEXIT
+#  define SYS_atexit                   __SYS_atexit
+#  define __SYS_onexit                (__SYS_atexit+1)
+#else
+#  define __SYS_onexit                __SYS_atexit
+#endif
+
+#ifdef CONFIG_SCHED_ONEXIT
+#  define SYS_onexit                   __SYS_onexit
+#  define __SYS_waitpaid               (__SYS_onexit+1)
+#else
+#  define __SYS_waitpaid               __SYS_onexit
+#endif
+
+#ifdef CONFIG_SCHED_WAITPID
+#  define SYS_waitpid                  __SYS_waitpaid
+#  define __SYS_signals               (__SYS_waitpaid+1)
+#else
+#  define __SYS_signals                __SYS_waitpaid
+#endif
+
+/* The following are only defined is signals are supported in the NuttX
+ * configuration.
+ */
+
+#ifndef CONFIG_DISABLE_SIGNALS
+#  define SYS_kill                     (__SYS_signals+0)
+#  define SYS_sigaction                (__SYS_signals+1)
+#  define SYS_sigpending               (__SYS_signals+2)
+#  define SYS_sigprocmask              (__SYS_signals+3)
+#  define SYS_sigqueue                 (__SYS_signals+4)
+#  define SYS_sigsuspend               (__SYS_signals+5)
+#  define SYS_sigtimedwait             (__SYS_signals+6)
+#  define SYS_sigwaitinfo              (__SYS_signals+7)
+#  define SYS_sleep                    (__SYS_signals+8)
+#  define SYS_usleep                   (__SYS_signals+9)
+#  define __SYS_clock                  (__SYS_signals+10)
+#else
+#  define __SYS_clock                  __SYS_signals
+#endif
+
+/* The following are only defined if the system clock is enabled in the
+ * NuttX configuration.
+ */
+
+#ifndef CONFIG_DISABLE_CLOCK
+#  define SYS_clock_systimer           (__SYS_clock+0)
+#  define SYS_clock_getres             (__SYS_clock+1)
+#  define SYS_clock_gettime            (__SYS_clock+2)
+#  define SYS_clock_settime            (__SYS_clock+3)
+#  define SYS_gettimeofday             (__SYS_clock+4)
+#  define __SYS_timers                 (__SYS_clock+5)
+#else
+#  define __SYS_timers                 __SYS_clock
+#endif
+
+/* The following are defined only if POSIX timers are supported */
+
+#ifndef CONFIG_DISABLE_POSIX_TIMERS
+#  define SYS_timer_create             (__SYS_timers+0)
+#  define SYS_timer_delete             (__SYS_timers+1)
+#  define SYS_timer_getoverrun         (__SYS_timers+2)
+#  define SYS_timer_gettime            (__SYS_timers+3)
+#  define SYS_timer_settime            (__SYS_timers+4)
+#  define __SYS_descriptors            (__SYS_timers+5)
+#else
+#  define __SYS_descriptors             __SYS_timers
+#endif
+
+/* The following are defined if either file or socket descriptor are
+ * enabled.
+ */
+
+#ifndef CONFIG_NET
+#  undef CONFIG_NSOCKET_DESCRIPTORS
+#  define CONFIG_NSOCKET_DESCRIPTORS 0
+#endif
+
+#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 
+#  define SYS_close                    (__SYS_descriptors+0)
+#  define SYS_ioctl                    (__SYS_descriptors+1)
+#  define SYS_read                     (__SYS_descriptors+2)
+#  define SYS_write                    (__SYS_descriptors+3)
+#  ifndef CONFIG_DISABLE_POLL
+#    define SYS_poll                   (__SYS_descriptors+4)
+#    define SYS_select                 (__SYS_descriptors+5)
+#    define __SYS_filedesc             (__SYS_descriptors+6)
+#  else
+#    define __SYS_filedesc             (__SYS_descriptors+4)
+#  endif
+#else
+#  define __SYS_filedesc               __SYS_descriptors
+#endif
+
+/* The following are defined if file descriptors are enabled */
+
+#if CONFIG_NFILE_DESCRIPTORS > 0
+#  define SYS_closedir                 (__SYS_filedesc+0)
+#  define SYS_dup                      (__SYS_filedesc+1)
+#  define SYS_dup2                     (__SYS_filedesc+2)
+#  define SYS_fcntl                    (__SYS_filedesc+3)
+#  define SYS_lseek                    (__SYS_filedesc+4)
+#  define SYS_mkfifo                   (__SYS_filedesc+5)
+#  define SYS_mmap                     (__SYS_filedesc+6)
+#  define SYS_open                     (__SYS_filedesc+7)
+#  define SYS_opendir                  (__SYS_filedesc+8)
+#  define SYS_pipe                     (__SYS_filedesc+9)
+#  define SYS_readdir                  (__SYS_filedesc+10)
+#  define SYS_rewinddir                (__SYS_filedesc+11)
+#  define SYS_seekdir                  (__SYS_filedesc+12)
+#  define SYS_stat                     (__SYS_filedesc+13)
+#  define SYS_statfs                   (__SYS_filedesc+14)
+#  define SYS_telldir                  (__SYS_filedesc+15)
+
+#  if CONFIG_NFILE_STREAMS > 0
+#    define SYS_fs_fdopen              (__SYS_filedesc+16)
+#    define SYS_sched_getstreams       (__SYS_filedesc+17)
+#    define __SYS_mountpoint           (__SYS_filedesc+18)
+#  else
+#    define __SYS_mountpoint           (__SYS_filedesc+16)
+#  endif
+
+#  if !defined(CONFIG_DISABLE_MOUNTPOINT)
+#    define SYS_fsync                  (__SYS_mountpoint+0)
+#    define SYS_mkdir                  (__SYS_mountpoint+1)
+#    define SYS_mount                  (__SYS_mountpoint+2)
+#    define SYS_rename                 (__SYS_mountpoint+3)
+#    define SYS_rmdir                  (__SYS_mountpoint+4)
+#    define SYS_umount                 (__SYS_mountpoint+5)
+#    define SYS_unlink                 (__SYS_mountpoint+6)
+#    define __SYS_pthread              (__SYS_mountpoint+7)
+#  else
+#    define __SYS_pthread              __SYS_mountpoint
+#  endif
+
+#else
+#  define __SYS_pthread                __SYS_filedesc
+#endif
+
+/* The following are defined if pthreads are enabled */
+
+#ifndef CONFIG_DISABLE_PTHREAD
+#  define SYS_pthread_barrier_destroy  (__SYS_pthread+0)
+#  define SYS_pthread_barrier_init     (__SYS_pthread+1)
+#  define SYS_pthread_barrier_wait     (__SYS_pthread+2)
+#  define SYS_pthread_cancel           (__SYS_pthread+3)
+#  define SYS_pthread_cond_broadcast   (__SYS_pthread+4)
+#  define SYS_pthread_cond_destroy     (__SYS_pthread+5)
+#  define SYS_pthread_cond_init        (__SYS_pthread+6)
+#  define SYS_pthread_cond_signal      (__SYS_pthread+7)
+#  define SYS_pthread_cond_wait        (__SYS_pthread+8)
+#  define SYS_pthread_create           (__SYS_pthread+9)
+#  define SYS_pthread_detach           (__SYS_pthread+10)
+#  define SYS_pthread_exit             (__SYS_pthread+11)
+#  define SYS_pthread_getschedparam    (__SYS_pthread+12)
+#  define SYS_pthread_getspecific      (__SYS_pthread+13)
+#  define SYS_pthread_join             (__SYS_pthread+14)
+#  define SYS_pthread_key_create       (__SYS_pthread+15)
+#  define SYS_pthread_key_delete       (__SYS_pthread+16)
+#  define SYS_pthread_mutex_destroy    (__SYS_pthread+17)
+#  define SYS_pthread_mutex_init       (__SYS_pthread+18)
+#  define SYS_pthread_mutex_lock       (__SYS_pthread+19)
+#  define SYS_pthread_mutex_trylock    (__SYS_pthread+20)
+#  define SYS_pthread_mutex_unlock     (__SYS_pthread+21)
+#  define SYS_pthread_once             (__SYS_pthread+22)
+#  define SYS_pthread_setcancelstate   (__SYS_pthread+23)
+#  define SYS_pthread_setschedparam    (__SYS_pthread+24)
+#  define SYS_pthread_setschedprio     (__SYS_pthread+25)
+#  define SYS_pthread_setspecific      (__SYS_pthread+26)
+#  define SYS_pthread_yield            (__SYS_pthread+27)
+
+#  ifndef CONFIG_DISABLE_SIGNAL
+#    define SYS_pthread_cond_timedwait (__SYS_pthread+28)
+#    define SYS_pthread_kill           (__SYS_pthread+29)
+#    define SYS_pthread_sigmask        (__SYS_pthread+30)
+#    define __SYS_mqueue               (__SYS_pthread+31)
+#  else
+#    define __SYS_mqueue               (__SYS_pthread+28)
+#  endif
+
+#else
+#  define __SYS_mqueue                 __SYS_pthread
+#endif
+
+/* The following are defined only if message queues are enabled */
+
+#ifndef CONFIG_DISABLE_MQUEUE
+#  define SYS_mq_close                 (__SYS_mqueue+0)
+#  define SYS_mq_notify                (__SYS_mqueue+1)
+#  define SYS_mq_open                  (__SYS_mqueue+2)
+#  define SYS_mq_receive               (__SYS_mqueue+3)
+#  define SYS_mq_send                  (__SYS_mqueue+4)
+#  define SYS_mq_timedreceive          (__SYS_mqueue+5)
+#  define SYS_mq_timedsend             (__SYS_mqueue+6)
+#  define SYS_mq_unlink                (__SYS_mqueue+7)
+#  define __SYS_environ                (__SYS_mqueue+8)
+#else
+#  define __SYS_environ                __SYS_mqueue
+#endif
+
+/* The following are defined only if environment variables are supported */
+
+#ifndef CONFIG_DISABLE_ENVIRON
+#  define SYS_clearenv                 (__SYS_environ+0)
+#  define SYS_getenv                   (__SYS_environ+1)
+#  define SYS_putenv                   (__SYS_environ+2)
+#  define SYS_setenv                   (__SYS_environ+3)
+#  define SYS_unsetenv                 (__SYS_environ+4)
+#  define __SYS_network                (__SYS_environ+5)
+#else
+#  define __SYS_network                __SYS_environ
+#endif
+
+/* The following are defined only if networking AND sockets are supported */
+
+#if CONFIG_NSOCKET_DESCRIPTORS > 0 && defined(CONFIG_NET)
+#  define SYS_accept                   (__SYS_network+0)
+#  define SYS_bind                     (__SYS_network+1)
+#  define SYS_connect                  (__SYS_network+2)
+#  define SYS_getsockopt               (__SYS_network+3)
+#  define SYS_listen                   (__SYS_network+4)
+#  define SYS_recv                     (__SYS_network+5)
+#  define SYS_recvfrom                 (__SYS_network+6)
+#  define SYS_send                     (__SYS_network+7)
+#  define SYS_sendto                   (__SYS_network+8)
+#  define SYS_setsockopt               (__SYS_network+9)
+#  define SYS_socket                   (__SYS_network+10)
+#  define SYS_nnetsocket               (__SYS_network+11)
+#else
+#  define SYS_nnetsocket               __SYS_network
+#endif
+
+/* The following is defined only if CONFIG_TASK_NAME_SIZE > 0 */
+
+#if CONFIG_TASK_NAME_SIZE > 0
+#  define SYS_prctl                    (SYS_nnetsocket+0)
+#  define SYS_maxsyscall               (SYS_nnetsocket+1)
+#else
+#  define SYS_maxsyscall               SYS_nnetsocket
+#endif
+
+/* Note that the reported number of system calls does *NOT* include the
+ * architecture-specific system calls.  If the "real" total is required,
+ * use SYS_maxsyscall.
+ */
+
+#define SYS_nsyscalls                  (SYS_maxsyscall-CONFIG_SYS_RESERVED)
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* This is the union of all possible stub function types */
+
+union syscall_stubfunc_u
+{
+  uintptr_t (*stub0)(void);
+  uintptr_t (*stub1)(uintptr_t parm1);
+  uintptr_t (*stub2)(uintptr_t parm1, uintptr_t parm2);
+  uintptr_t (*stub3)(uintptr_t parm1, uintptr_t parm2, uintptr_t parm3);
+  uintptr_t (*stub4)(uintptr_t parm1, uintptr_t parm2, uintptr_t parm3,
+                     uintptr_t parm4);
+  uintptr_t (*stub5)(uintptr_t parm1, uintptr_t parm2, uintptr_t parm3,
+                     uintptr_t parm4, uintptr_t parm5);
+  uintptr_t (*stub6)(uintptr_t parm1, uintptr_t parm2, uintptr_t parm3,
+                     uintptr_t parm4, uintptr_t parm5, uintptr_t parm6);
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* Stub lookup tables.  Each table is indexed by the system call numbers
+ * defined above.  Given the system call number, the corresponding entry in
+ * these tables describes how to call the stub dispatch function.
+ */
+
+EXTERN const union syscall_stubfunc_u g_stublookup[SYS_nsyscalls];
+EXTERN const uint8_t                  g_stubnparms[SYS_nsyscalls];
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __INCLUDE_SYS_SYSCALL_H */
+
diff --git a/nuttx/include/sys/time.h b/nuttx/include/sys/time.h
new file mode 100644
index 000000000..75dfd7280
--- /dev/null
+++ b/nuttx/include/sys/time.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+ * include/sys/time.h
+ *
+ *   Copyright (C) 2009 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_SYS_TIME_H
+#define __INCLUDE_SYS_TIME_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <time.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN int gettimeofday(struct timeval *tp, FAR void *tzp);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_SYS_TIME_H */
diff --git a/nuttx/include/sys/types.h b/nuttx/include/sys/types.h
new file mode 100644
index 000000000..2ae69d4a7
--- /dev/null
+++ b/nuttx/include/sys/types.h
@@ -0,0 +1,232 @@
+/****************************************************************************
+ * include/sys/types.h
+ *
+ *   Copyright (C) 2007-2009, 2011-2012 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_SYS_TYPES_H
+#define __INCLUDE_SYS_TYPES_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#ifndef __ASSEMBLY__
+#  include <stdint.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Alternative values for type bool (for historic reasons) */
+
+#ifndef TRUE
+#  define TRUE  1
+#endif
+#ifndef FALSE
+#  define FALSE 0
+#endif
+
+/* NULL is usually defined in stddef.h (which includes this file) */
+
+#ifndef NULL
+    /* SDCC is sensitive to NULL pointer type conversions, and C++ defines
+     * NULL as zero
+     */
+
+#  if defined(SDCC) || defined(__cplusplus)
+#    define NULL (0)
+#  else
+#    define NULL ((void*)0)
+#  endif
+#endif
+
+/* POSIX-like OS return values: */
+
+#if !defined(__cplusplus)
+#  undef  ERROR
+#  define ERROR -1
+#endif
+
+#undef  OK
+#define OK 0
+
+/* HPUX-like MIN/MAX value */
+
+#define PRIOR_RR_MIN      0
+#define PRIOR_RR_MAX    255
+#define PRIOR_FIFO_MIN    0
+#define PRIOR_FIFO_MAX  255
+#define PRIOR_OTHER_MIN   0
+#define PRIOR_OTHER_MAX 255
+
+/* Scheduling Priorities.  NOTE:  Only the idle task can take
+ * the true minimum priority. */
+
+#define SCHED_PRIORITY_MAX     255
+#define SCHED_PRIORITY_DEFAULT 100
+#define SCHED_PRIORITY_MIN       1
+#define SCHED_PRIORITY_IDLE      0
+
+/****************************************************************************
+ * Type Declarations
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* Floating point types */
+
+typedef float  float32;
+#ifndef CONFIG_HAVE_DOUBLE
+typedef float  double_t;
+typedef float  float64;
+#else
+typedef double double_t;
+typedef double float64;
+#endif
+
+/* Misc. scalar types */
+
+/* mode_t is an integer type used for file attributes.  mode_t needs
+ * to be at least 16-bits but, in fact must be sizeof(int) because it is
+ * pased via varargs.
+ */
+
+typedef unsigned int mode_t;
+
+/* size_t is used for sizes of memory objects.
+ * ssize_t is used for a count of bytes or an error indication.
+ */
+
+#ifdef CONFIG_SMALL_MEMORY
+typedef uint16_t     size_t;
+typedef int16_t      ssize_t;
+#else
+typedef uint32_t     size_t;
+typedef int32_t      ssize_t;
+#endif
+
+/* uid_t is used for user IDs
+ * gid_t is used for group IDs.
+ */
+
+typedef int16_t      uid_t;
+typedef int16_t      gid_t;
+
+/* dev_t is used for device IDs */
+
+typedef uint16_t     dev_t;
+
+/* ino_t is used for file serial numbers */
+
+typedef uint16_t     ino_t;
+
+/* pid_t is used for process IDs and process group IDs */
+
+typedef int          pid_t;
+
+/* id_t is a general identifier that can be used to contain at least a pid_t,
+ * uid_t, or gid_t.
+ */
+
+typedef unsigned int id_t;
+
+/* Signed integral type of the result of subtracting two pointers */
+
+typedef intptr_t     ptrdiff_t;
+
+/* Wide, 16-bit character types.  wchar_t is a built-in type in C++ and
+ * its declaration here may cause compilation errors on some compilers
+ * if -DCONFIG_WCHAR_BUILTIN is not included in the CXXFLAGS.
+ */
+
+#ifndef CONFIG_WCHAR_BUILTIN
+typedef uint16_t     wchar_t;
+#endif
+
+/* blkcnt_t and off_t are signed integer types.
+ *
+ *   blkcnt_t is used for file block counts.
+ *   off_t is used for file offsets and sizes.
+ *   fpos_t is used for file positions.
+ *
+ * Hence, all should be independent of processor architecture.
+ */
+
+typedef uint32_t     blkcnt_t;
+typedef int32_t      off_t;
+typedef off_t        fpos_t;
+
+/* Large file versions */
+
+#ifdef CONFIG_HAVE_LONG_LONG
+typedef int64_t      off64_t;
+typedef int64_t      fpos64_t;
+#endif
+
+/* blksize_t is a signed integer value used for file block sizes */
+
+typedef int16_t      blksize_t;
+
+/* Network related */
+
+typedef unsigned int socklen_t;
+typedef uint16_t     sa_family_t;
+
+/* Used for system times in clock ticks */
+
+typedef uint32_t     clock_t;
+
+/* The type useconds_t shall be an unsigned integer type capable of storing
+ * values at least in the range [0, 1000000]. The type suseconds_t shall be
+ * a signed integer type capable of storing values at least in the range
+ * [-1, 1000000].
+ */
+
+typedef uint32_t     useconds_t;
+typedef int32_t      suseconds_t;
+
+/* Task entry point */
+
+typedef int (*main_t)(int argc, char *argv[]);
+
+#endif
+
+/****************************************************************************
+ * Global Function Prototypes
+ ****************************************************************************/
+
+#endif /* __INCLUDE_SYS_TYPES_H */
diff --git a/nuttx/include/sys/vfs.h b/nuttx/include/sys/vfs.h
new file mode 100644
index 000000000..8433893c3
--- /dev/null
+++ b/nuttx/include/sys/vfs.h
@@ -0,0 +1,61 @@
+/****************************************************************************
+ * include/sys/vfs.h
+ *
+ *   Copyright (C) 2007, 2008 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_SYS_VFS_H
+#define __INCLUDE_SYS_VFS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/* sys/vfs.h is just an alternative location for the information in
+ * sys/statfs.h.
+ */
+
+#include <sys/statfs.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#endif /* __INCLUDE_SYS_VFS_H */
diff --git a/nuttx/include/sys/wait.h b/nuttx/include/sys/wait.h
new file mode 100644
index 000000000..6af1e971e
--- /dev/null
+++ b/nuttx/include/sys/wait.h
@@ -0,0 +1,118 @@
+/****************************************************************************
+ * include/sys/wait.h
+ *
+ *   Copyright (C) 2011 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_SYS_WAIT_H
+#define __INCLUDE_SYS_WAIT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/types.h>
+#include <signal.h>
+
+#ifdef CONFIG_SCHED_WAITPID
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/* The following are provided for analysis of returned status values.
+ * Encoded is as follows as 2 bytes of info(MS) then two bytes of code (LS).
+ * Code:
+ *   0 - Child has exited, info is the exit code.
+ *   Other values - Not implemented
+ */
+
+#define WEXITSTATUS(s)  (((s) >> 8) & 0xff)/* Return exit status */
+
+#define WIFEXITED(s)    (((s) & 0xff) == 0) /* True: Child exited normally */
+#define WIFCONTINUED(s) (false)  /* True: Child has been continued */
+#define WIFSIGNALED(s)  (false)  /* True: Child exited due to uncaught signal */
+#define WIFSTOPPED(s)   (false)  /* True: Child is currently stopped */
+#define WSTOPSIG(s)     (false)  /* Return signal number that caused process to stop */
+#define WTERMSIG(s)     (false)  /* Return signal number that caused process to terminate */
+
+/* The following symbolic constants are possible values for the options
+ * argument to waitpi(1) (1) and/or waitid() (2),
+ */
+
+#define WCONTINUED      (1 << 0) /* Status for child that has been continued (1)(2) */
+#define WNOHANG         (1 << 1) /* Do not wait if status not available (1) */
+#define WUNTRACED       (1 << 2) /* Report status of stopped child process (1) */
+
+#define WEXITED         (1 << 3) /* Wait for processes that have exited (2) */
+#define WSTOPPED        (1 << 4) /* Status for child stopped on signal (2) */
+#define WNOHANG         (1 << 5) /* Return immediately if there are no children (2) */
+#define WNOWAIT         (1 << 6) /* Keep the process in a waitable state (2) */
+
+/****************************************************************************
+ * Public Type Definitions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+enum idtype_e
+{
+  P_PID = 1,
+  P_GID = 2,
+  P_ALL = 3
+};
+typedef enum idtype_e idtype_t;
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+EXTERN pid_t wait(int *stat_loc);
+EXTERN int   waitid(idtype_t idtype, id_t id, siginfo_t *siginfo, int options);
+EXTERN pid_t waitpid(pid_t pid, int *stat_loc, int options);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_SCHED_WAITPID */
+#endif /* __INCLUDE_SYS_WAIT_H */