Move nuttx/examples to apps/examples

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3405 42af7a65-404d-4744-a932-0658087f49c3

4 files changed, 1089 insertions, 0 deletions

diff --git a/apps/examples/mount/Makefile b/apps/examples/mount/Makefile
new file mode 100644
index 000000000..46a8c0576
--- /dev/null
+++ b/apps/examples/mount/Makefile
@@ -0,0 +1,90 @@
+############################################################################
+# apps/Makefile
+#
+#   Copyright (C) 2007-2008, 2010-2010 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# 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.
+#
+############################################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
+
+# mount() test
+
+ASRCS		=
+CSRCS		= mount_main.c ramdisk.c
+
+AOBJS		= $(ASRCS:.S=$(OBJEXT))
+COBJS		= $(CSRCS:.c=$(OBJEXT))
+
+SRCS		= $(ASRCS) $(CSRCS)
+OBJS		= $(AOBJS) $(COBJS)
+
+BIN	    	= ../../libapps$(LIBEXT)
+
+ROOTDEPPATH	= --dep-path .
+
+# Common build
+
+VPATH		= 
+
+all: .built
+.PHONY:	.built clean depend disclean
+
+$(AOBJS): %$(OBJEXT): %.S
+	$(call ASSEMBLE, $<, $@)
+
+$(COBJS): %$(OBJEXT): %.c
+	$(call COMPILE, $<, $@)
+
+$(BIN):	$(OBJS)
+	@( for obj in $(OBJS) ; do \
+		$(call ARCHIVE, $@, $${obj}); \
+	done ; )
+	@touch .built
+	
+.built: $(BIN)
+
+.depend: Makefile $(SRCS)
+	@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
+	@touch $@
+
+# Register application
+depend: .depend
+
+clean:
+	@rm -f $(BIN) *.o *~ .*.swp .built
+	$(call CLEAN)
+
+distclean: clean
+	@rm -f Make.dep .depend
+
+-include Make.dep
diff --git a/apps/examples/mount/mount.h b/apps/examples/mount/mount.h
new file mode 100644
index 000000000..68a03674d
--- /dev/null
+++ b/apps/examples/mount/mount.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+ * examples/mount/mount.h
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 __EXAMPLES_MOUNT_MOUNT_H
+#define __EXAMPLES_MOUNT_MOUNT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Configure the test */
+
+#if defined(CONFIG_EXAMPLES_MOUNT_DEVNAME)
+#  if !defined(CONFIG_FS_WRITABLE)
+#    error "Writable filesystem required in this configuration"
+#  endif
+#  undef  CONFIG_EXAMPLES_MOUNT_NSECTORS
+#  undef  CONFIG_EXAMPLES_MOUNT_SECTORSIZE
+#  undef  CONFIG_EXAMPLES_MOUNT_RAMDEVNO
+#  define MOUNT_DEVNAME CONFIG_EXAMPLES_MOUNT_DEVNAME
+#else
+#  if !defined(CONFIG_FS_FAT)
+#    error "CONFIG_FS_FAT required in this configuration"
+#  endif
+#  if !defined(CONFIG_EXAMPLES_MOUNT_SECTORSIZE)
+#    define CONFIG_EXAMPLES_MOUNT_SECTORSIZE 512
+#  endif
+#  if !defined(CONFIG_EXAMPLES_MOUNT_NSECTORS)
+#    define CONFIG_EXAMPLES_MOUNT_NSECTORS   2048
+#  endif
+#  if !defined(CONFIG_EXAMPLES_MOUNT_RAMDEVNO)
+#     define CONFIG_EXAMPLES_MOUNT_RAMDEVNO  0
+#  endif
+#  define STR_RAMDEVNO(m)    #m
+#  define MKMOUNT_DEVNAME(m) "/dev/ram" STR_RAMDEVNO(m)
+#  define MOUNT_DEVNAME      MKMOUNT_DEVNAME(CONFIG_EXAMPLES_MOUNT_RAMDEVNO)
+#endif
+
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+extern const char g_source[]; /* Mount 'source' path */
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef CONFIG_EXAMPLES_MOUNT_DEVNAME
+extern int create_ramdisk(void);
+#endif
+
+#endif /* __EXAMPLES_MOUNT_MOUNT_H */
diff --git a/apps/examples/mount/mount_main.c b/apps/examples/mount/mount_main.c
new file mode 100644
index 000000000..05bda8150
--- /dev/null
+++ b/apps/examples/mount/mount_main.c
@@ -0,0 +1,762 @@
+/****************************************************************************
+ * mount_main.c
+ *
+ *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+
+#include "mount.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define TEST_USE_STAT         1
+#define TEST_SHOW_DIRECTORIES 1
+#define TEST_USE_STATFS       1
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static const char g_mntdir[]         = "/mnt";
+static const char g_target[]         = "/mnt/fs";
+static const char g_filesystemtype[] = "vfat";
+
+static const char g_testdir1[]       = "/mnt/fs/TestDir";
+static const char g_testdir2[]       = "/mnt/fs/NewDir1";
+static const char g_testdir3[]       = "/mnt/fs/NewDir2";
+static const char g_testdir4[]       = "/mnt/fs/NewDir3";
+#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
+static const char g_testfile1[]      = "/mnt/fs/TestDir/TestFile.txt";
+#endif
+static const char g_testfile2[]      = "/mnt/fs/TestDir/WrTest1.txt";
+static const char g_testfile3[]      = "/mnt/fs/NewDir1/WrTest2.txt";
+static const char g_testfile4[]      = "/mnt/fs/NewDir3/Renamed.txt";
+static const char g_testmsg[]        = "This is a write test";
+
+static int        g_nerrors          = 0;
+
+static char       g_namebuffer[256];
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+       const char g_source[]         = MOUNT_DEVNAME;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+#ifdef TEST_USE_STAT
+static void show_stat(const char *path, struct stat *ps)
+{
+  printf("%s stat:\n", path);
+  printf("\tmode        : %08x\n", ps->st_mode);
+  if (S_ISREG(ps->st_mode))
+    {
+      printf("\ttype        : File\n");
+    }
+  else if (S_ISDIR(ps->st_mode))
+    {
+      printf("\ttype        : Directory\n");
+    }
+  else if (S_ISCHR(ps->st_mode))
+    {
+      printf("\ttype        : Character driver\n");
+    }
+  else if (S_ISBLK(ps->st_mode))
+    {
+      printf("\ttype        : Block driver\n");
+    }
+  else
+    {
+      printf("\ttype        : Unknown\n");
+    }
+
+  printf("\tsize        : %d (bytes)\n",  ps->st_size);
+  printf("\tblock size  : %d (bytes)\n",  ps->st_blksize);
+  printf("\tsize        : %d (blocks)\n", ps->st_blocks);
+  printf("\taccess time : %d\n", ps->st_atime);
+  printf("\tmodify time : %d\n", ps->st_mtime);
+  printf("\tchange time : %d\n", ps->st_ctime);
+}
+#endif
+
+/****************************************************************************
+ * Name: show_statfs
+ ****************************************************************************/
+
+#ifdef TEST_USE_STATFS
+static void show_statfs(const char *path)
+{
+  struct statfs buf;
+  int ret;
+
+  /* Try stat() against a file or directory.  It should fail with expectederror */
+
+  printf("show_statfs: Try statfs(%s)\n", path);
+  ret = statfs(path, &buf);
+  if (ret == 0)
+    {
+      printf("show_statfs: statfs(%s) succeeded\n", path);
+      printf("\tFS Type           : %0x\n", buf.f_type);
+      printf("\tBlock size        : %d\n", buf.f_bsize);
+      printf("\tNumber of blocks  : %d\n", buf.f_blocks);
+      printf("\tFree blocks       : %d\n", buf.f_bfree);
+      printf("\tFree user blocks  : %d\n", buf.f_bavail);
+      printf("\tNumber file nodes : %d\n", buf.f_files);
+      printf("\tFree file nodes   : %d\n", buf.f_ffree);
+      printf("\tFile name length  : %d\n", buf.f_namelen);
+    }
+  else
+    {
+      printf("show_statfs: ERROR statfs(%s) failed with errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+}
+#else
+# define show_statfs(p)
+#endif
+
+/****************************************************************************
+ * Name: show_directories
+ ****************************************************************************/
+
+#ifdef TEST_SHOW_DIRECTORIES
+static void show_directories(const char *path, int indent)
+{
+  DIR *dirp;
+  struct dirent *direntry;
+  int i;
+
+  dirp = opendir(path);
+  if ( !dirp )
+    {
+      printf("show_directories: ERROR opendir(\"%s\") failed with errno=%d\n",
+             path, errno);
+      g_nerrors++;
+      return;
+    }
+
+  for (direntry = readdir(dirp); direntry; direntry = readdir(dirp))
+    {
+      for (i = 0; i < 2*indent; i++)
+        {
+          putchar(' ');
+        }
+      if (DIRENT_ISDIRECTORY(direntry->d_type))
+        {
+          char *subdir;
+          printf("%s/\n", direntry->d_name);
+          sprintf(g_namebuffer, "%s/%s", path, direntry->d_name);
+          subdir = strdup(g_namebuffer);
+          show_directories( subdir, indent + 1);
+          free(subdir);
+        }
+      else
+        {
+          printf("%s\n", direntry->d_name);
+        }
+    }
+
+  closedir(dirp);
+}
+#else
+# define show_directories(p,i)
+#endif
+
+/****************************************************************************
+ * Name: fail_read_open
+ ****************************************************************************/
+#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
+static void fail_read_open(const char *path, int expectederror)
+{
+  int fd;
+
+  printf("fail_read_open: Try open(%s) for reading\n", path);
+
+  fd = open(path, O_RDONLY);
+  if (fd >= 0)
+    {
+      printf("fail_read_open: ERROR open(%s) succeeded\n", path);
+      g_nerrors++;
+      close(fd);
+    }
+  else if (errno != expectederror)
+    {
+      printf("fail_read_open: ERROR open(%s) failed with errno=%d (expected %d)\n",
+             path, errno, expectederror);
+      g_nerrors++;
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: read_test_file
+ ****************************************************************************/
+
+static void read_test_file(const char *path)
+{
+  char buffer[128];
+  int  nbytes;
+  int  fd;
+
+  /* Read a test file that is already on the test file system image */
+
+  printf("read_test_file: opening %s for reading\n", path);
+
+  fd = open(path, O_RDONLY);
+  if (fd < 0)
+    {
+      printf("read_test_file: ERROR failed to open %s, errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+  else
+    {
+      memset(buffer, 0, 128);
+      nbytes = read(fd, buffer, 128);
+      if (nbytes < 0)
+        {
+          printf("read_test_file: ERROR failed to read from %s, errno=%d\n",
+                 path, errno);
+          g_nerrors++;
+        }
+      else
+        {
+          buffer[127]='\0';
+          printf("read_test_file: Read \"%s\" from %s\n", buffer, path);
+        }
+      close(fd);
+    }
+}
+
+/****************************************************************************
+ * Name: write_test_file
+ ****************************************************************************/
+
+static void write_test_file(const char *path)
+{
+  int fd;
+
+  /* Write a test file into a pre-existing file on the test file system */
+
+  printf("write_test_file: opening %s for writing\n", path);
+
+  fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+  if (fd < 0)
+    {
+      printf("write_test_file: ERROR failed to open %s for writing, errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+  else
+    {
+      int nbytes = write(fd, g_testmsg, strlen(g_testmsg));
+      if (nbytes < 0)
+        {
+          printf("write_test_file: ERROR failed to write to %s, errno=%d\n",
+                 path, errno);
+          g_nerrors++;
+        }
+      else
+        {
+          printf("write_test_file: wrote %d bytes to %s\n", nbytes, path);
+        }
+      close(fd);
+    }
+}
+
+/****************************************************************************
+ * Name: fail_mkdir
+ ****************************************************************************/
+
+static void fail_mkdir(const char *path, int expectederror)
+{
+  int ret;
+
+  /* Try mkdir() against a file or directory.  It should fail with expectederror */
+
+  printf("fail_mkdir: Try mkdir(%s)\n", path);
+
+  ret = mkdir(path, 0666);
+  if (ret == 0)
+    {
+      printf("fail_mkdir: ERROR mkdir(%s) succeeded\n", path);
+      g_nerrors++;
+    }
+  else if (errno != expectederror)
+    {
+      printf("fail_mkdir: ERROR mkdir(%s) failed with errno=%d (expected %d)\n",
+             path, errno, expectederror);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: succeed_mkdir
+ ****************************************************************************/
+
+static void succeed_mkdir(const char *path)
+{
+  int ret;
+
+  printf("succeed_mkdir: Try mkdir(%s)\n", path);
+
+  ret = mkdir(path, 0666);
+  if (ret != 0)
+    {
+      printf("succeed_mkdir: ERROR mkdir(%s) failed with errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: fail_rmdir
+ ****************************************************************************/
+
+static void fail_rmdir(const char *path, int expectederror)
+{
+  int ret;
+
+  /* Try rmdir() against a file or directory.  It should fail with expectederror */
+
+  printf("fail_rmdir: Try rmdir(%s)\n", path);
+
+  ret = rmdir(path);
+  if (ret == 0)
+    {
+      printf("fail_rmdir: ERROR rmdir(%s) succeeded\n", path);
+      g_nerrors++;
+    }
+  else if (errno != expectederror)
+    {
+      printf("fail_rmdir: ERROR rmdir(%s) failed with errno=%d (expected %d)\n",
+             path, errno, expectederror);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: succeed_rmdir
+ ****************************************************************************/
+
+static void succeed_rmdir(const char *path)
+{
+  int ret;
+
+  printf("succeed_rmdir: Try rmdir(%s)\n", path);
+
+  ret = rmdir(path);
+  if (ret != 0)
+    {
+      printf("succeed_rmdir: ERROR rmdir(%s) failed with errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: fail_unlink
+ ****************************************************************************/
+
+static void fail_unlink(const char *path, int expectederror)
+{
+  int ret;
+
+  /* Try unlink() against a file or directory.  It should fail with expectederror */
+
+  printf("fail_unlink: Try unlink(%s)\n", path);
+
+  ret = unlink(path);
+  if (ret == 0)
+    {
+      printf("fail_unlink: ERROR unlink(%s) succeeded\n", path);
+      g_nerrors++;
+    }
+  else if (errno != expectederror)
+    {
+      printf("fail_unlink: ERROR unlink(%s) failed with errno=%d (expected %d)\n",
+             path, errno, expectederror);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: succeed_unlink
+ ****************************************************************************/
+
+static void succeed_unlink(const char *path)
+{
+  int ret;
+
+  /* Try unlink() against the test file.  It should succeed. */
+
+  printf("succeed_unlink: Try unlink(%s)\n", path);
+
+  ret = unlink(path);
+  if (ret != 0)
+    {
+      printf("succeed_unlink: ERROR unlink(%s) failed with errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: fail_rename
+ ****************************************************************************/
+
+static void fail_rename(const char *oldpath, const char *newpath, int expectederror)
+{
+  int ret;
+
+  /* Try rename() against a file or directory.  It should fail with expectederror */
+
+  printf("fail_rename: Try rename(%s->%s)\n", oldpath, newpath);
+
+  ret = rename(oldpath, newpath);
+  if (ret == 0)
+    {
+      printf("fail_rename: ERROR rename(%s->%s) succeeded\n",
+             oldpath, newpath);
+      g_nerrors++;
+    }
+  else if (errno != expectederror)
+    {
+      printf("fail_rename: ERROR rename(%s->%s) failed with errno=%d (expected %d)\n",
+             oldpath, newpath, errno, expectederror);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: succeed_rename
+ ****************************************************************************/
+
+static void succeed_rename(const char *oldpath, const char *newpath)
+{
+  int ret;
+
+  printf("succeed_rename: Try rename(%s->%s)\n", oldpath, newpath);
+
+  ret = rename(oldpath, newpath);
+  if (ret != 0)
+    {
+      printf("succeed_rename: ERROR rename(%s->%s) failed with errno=%d\n",
+             oldpath, newpath, errno);
+      g_nerrors++;
+    }
+}
+
+/****************************************************************************
+ * Name: fail_stat
+ ****************************************************************************/
+
+#ifdef TEST_USE_STAT
+static void fail_stat(const char *path, int expectederror)
+{
+  struct stat buf;
+  int ret;
+
+  /* Try stat() against a file or directory.  It should fail with expectederror */
+
+  printf("fail_stat: Try stat(%s)\n", path);
+
+  ret = stat(path, &buf);
+  if (ret == 0)
+    {
+      printf("fail_stat: ERROR stat(%s) succeeded\n", path);
+      show_stat(path, &buf);
+      g_nerrors++;
+    }
+  else if (errno != expectederror)
+    {
+      printf("fail_stat: ERROR stat(%s) failed with errno=%d (expected %d)\n",
+             path, errno, expectederror);
+      g_nerrors++;
+    }
+}
+#else
+# define fail_stat(p,e);
+#endif
+
+/****************************************************************************
+ * Name: succeed_stat
+ ****************************************************************************/
+
+#ifdef TEST_USE_STAT
+static void succeed_stat(const char *path)
+{
+  struct stat buf;
+  int ret;
+
+  printf("succeed_stat: Try stat(%s)\n", path);
+
+  ret = stat(path, &buf);
+  if (ret != 0)
+    {
+      printf("succeed_stat: ERROR stat(%s) failed with errno=%d\n",
+             path, errno);
+      g_nerrors++;
+    }
+  else
+    {
+      printf("succeed_stat: stat(%s) succeeded\n", path);
+      show_stat(path, &buf);
+    }
+}
+#else
+#define succeed_stat(p)
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: user_initialize
+ ****************************************************************************/
+
+void user_initialize(void)
+{
+}
+
+/****************************************************************************
+ * Name: user_start
+ ****************************************************************************/
+
+int user_start(int argc, char *argv[])
+{
+  int  ret;
+
+#ifndef CONFIG_EXAMPLES_MOUNT_DEVNAME
+  /* Create a RAM disk for the test */
+
+  ret = create_ramdisk();
+  if (ret < 0)
+    {
+      printf("user_start: ERROR failed to create RAM disk\n");
+      return 1;
+    }
+#endif
+
+  /* Mount the test file system (see arch/sim/src/up_deviceimage.c */
+
+  printf("user_start: mounting %s filesystem at target=%s with source=%s\n",
+         g_filesystemtype, g_target, g_source);
+
+  ret = mount(g_source, g_target, g_filesystemtype, 0, NULL);
+  printf("user_start: mount() returned %d\n", ret);
+
+  if (ret == 0)
+    {
+      show_statfs(g_mntdir);
+      show_statfs(g_target);
+
+#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
+      /* Read a test file that is already on the test file system image */
+
+      show_directories("", 0);
+      succeed_stat(g_testfile1);
+      show_statfs(g_testfile1);
+      read_test_file(g_testfile1);
+#else
+      /* Create the test directory that would have been on the canned filesystem */
+
+      succeed_mkdir(g_testdir1);
+      show_directories("", 0);
+      succeed_stat(g_testdir1);
+      show_statfs(g_testdir1);
+#endif
+
+      /* Write a test file into a pre-existing directory on the test file system */
+
+      fail_stat(g_testfile2, ENOENT);
+      write_test_file(g_testfile2);
+      show_directories("", 0);
+      succeed_stat(g_testfile2);
+      show_statfs(g_testfile2);
+
+      /* Read the file that we just wrote */
+
+      read_test_file(g_testfile2);
+
+      /* Try rmdir() against a file on the directory.  It should fail with ENOTDIR */
+#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
+      fail_rmdir(g_testfile1, ENOTDIR);
+#endif
+
+      /* Try rmdir() against the test directory.  It should fail with ENOTEMPTY */
+
+      fail_rmdir(g_testdir1, ENOTEMPTY);
+
+      /* Try unlink() against the test directory.  It should fail with EISDIR */
+
+      fail_unlink(g_testdir1, EISDIR);
+
+      /* Try unlink() against the test file1.  It should succeed. */
+#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
+      succeed_unlink(g_testfile1);
+      fail_stat(g_testfile1, ENOENT);
+      show_directories("", 0);
+#endif
+
+      /* Attempt to open testfile1 should fail with ENOENT */
+#ifdef CONFIG_EXAMPLES_MOUNT_DEVNAME
+      fail_read_open(g_testfile1, ENOENT);
+#endif
+      /* Try rmdir() against the test directory.  It should still fail with ENOTEMPTY */
+
+      fail_rmdir(g_testdir1, ENOTEMPTY);
+
+      /* Try mkdir() against the test file2.  It should fail with EEXIST. */
+
+      fail_mkdir(g_testfile2, EEXIST);
+
+      /* Try unlink() against the test file2.  It should succeed. */
+
+      succeed_unlink(g_testfile2);
+      show_directories("", 0);
+      fail_stat(g_testfile2, ENOENT);
+
+      /* Try mkdir() against the test dir1.  It should fail with EEXIST. */
+
+      fail_mkdir(g_testdir1, EEXIST);
+
+      /* Try rmdir() against the test directory.  mkdir should now succeed. */
+
+      succeed_rmdir(g_testdir1);
+      show_directories("", 0);
+      fail_stat(g_testdir1, ENOENT);
+
+      /* Try mkdir() against the test dir2.  It should succeed */
+
+      succeed_mkdir(g_testdir2);
+      show_directories("", 0);
+      succeed_stat(g_testdir2);
+      show_statfs(g_testdir2);
+
+      /* Try mkdir() against the test dir2.  It should fail with EXIST */
+
+      fail_mkdir(g_testdir2, EEXIST);
+
+      /* Write a test file into a new directory on the test file system */
+
+      fail_stat(g_testfile3, ENOENT);
+      write_test_file(g_testfile3);
+      show_directories("", 0);
+      succeed_stat(g_testfile3);
+      show_statfs(g_testfile3);
+
+      /* Read the file that we just wrote */
+
+      read_test_file(g_testfile3);
+
+      /* Use mkdir() to create test dir3.  It should succeed */
+
+      fail_stat(g_testdir3, ENOENT);
+      succeed_mkdir(g_testdir3);
+      show_directories("", 0);
+      succeed_stat(g_testdir3);
+      show_statfs(g_testdir3);
+
+      /* Try rename() on the root directory. Should fail with EXDEV*/
+
+      fail_rename(g_target, g_testdir4, EXDEV);
+
+      /* Try rename() to an existing directory.  Should fail with EEXIST */
+
+      fail_rename(g_testdir2, g_testdir3, EEXIST);
+
+      /* Try rename() to a non-existing directory.  Should succeed */
+
+      fail_stat(g_testdir4, ENOENT);
+      succeed_rename(g_testdir3, g_testdir4);
+      show_directories("", 0);
+      fail_stat(g_testdir3, ENOENT);
+      succeed_stat(g_testdir4);
+      show_statfs(g_testdir4);
+
+      /* Try rename() of file.  Should work. */
+
+      fail_stat(g_testfile4, ENOENT);
+      succeed_rename(g_testfile3, g_testfile4);
+      show_directories("", 0);
+      fail_stat(g_testfile3, ENOENT);
+      succeed_stat(g_testfile4);
+      show_statfs(g_testfile4);
+
+      /* Make sure that we can still read the renamed file */
+
+      read_test_file(g_testfile4);
+
+      /* Unmount the file system */
+
+      printf("user_start: Try unmount(%s)\n", g_target);
+
+      ret = umount(g_target);
+      if (ret != 0)
+        {
+          printf("user_start: ERROR umount() failed, errno %d\n", errno);
+          g_nerrors++;
+        }
+
+      printf("user_start: %d errors reported\n", g_nerrors);
+    }
+
+  fflush(stdout);
+  return 0;
+}
diff --git a/apps/examples/mount/ramdisk.c b/apps/examples/mount/ramdisk.c
new file mode 100644
index 000000000..f596dae52
--- /dev/null
+++ b/apps/examples/mount/ramdisk.c
@@ -0,0 +1,141 @@
+/****************************************************************************
+ * examples/mount/ramdisk.c
+ *
+ *   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include <nuttx/ramdisk.h>
+#include <nuttx/mkfatfs.h>
+
+#include "mount.h"
+
+#ifndef CONFIG_EXAMPLES_MOUNT_DEVNAME
+
+/****************************************************************************
+ * Private Definitions
+ ****************************************************************************/
+
+#define BUFFER_SIZE (CONFIG_EXAMPLES_MOUNT_NSECTORS*CONFIG_EXAMPLES_MOUNT_SECTORSIZE)
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static struct fat_format_s g_fmt = FAT_FORMAT_INITIALIZER;
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+ 
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: create_ramdisk
+ *
+ * Description:
+ *   Create a RAM disk of the specified size formatting with a FAT file
+ *   system
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Return:
+ *   Zero on success, a negated errno on failure.
+ *
+ ****************************************************************************/
+
+int create_ramdisk(void)
+{
+  char *pbuffer;
+  int ret;
+
+  /* Allocate a buffer to hold the file system image. */
+
+  pbuffer = (char*)malloc(BUFFER_SIZE);
+  if (!pbuffer)
+    {
+      printf("create_ramdisk: Failed to allocate ramdisk of size %d\n",
+             BUFFER_SIZE);
+      return -ENOMEM;
+    }
+
+  /* Register a RAMDISK device to manage this RAM image */
+
+  ret = ramdisk_register(CONFIG_EXAMPLES_MOUNT_RAMDEVNO,
+                    pbuffer,
+                    CONFIG_EXAMPLES_MOUNT_NSECTORS,
+                    CONFIG_EXAMPLES_MOUNT_SECTORSIZE,
+                    true);
+  if (ret < 0)
+    {
+      printf("create_ramdisk: Failed to register ramdisk at %s: %d\n",
+             g_source, -ret);
+      free(pbuffer);
+      return ret;
+    }
+
+  /* Create a FAT filesystem on the ramdisk */
+
+  ret = mkfatfs(g_source, &g_fmt);
+  if (ret < 0)
+    {
+      printf("create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
+             g_source);
+      /* free(pbuffer); -- RAM disk is registered */
+      return ret;
+    }
+
+  return 0;
+}
+#endif /* !CONFIG_EXAMPLES_MOUNT_DEVNAME */