1 files changed, 106 insertions, 0 deletions
diff --git a/apps/graphics/traveler/trv_romfs.c b/apps/graphics/traveler/trv_romfs.c
new file mode 100644
index 000000000..651affc03
--- /dev/null
+++ b/apps/graphics/traveler/trv_romfs.c
@@ -0,0 +1,106 @@
+/****************************************************************************
+ * apps/graphics/traveler/trv_romfs.c
+ * Mount the ROMFS demo world
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifdef CONFIG_GRAPHICS_TRAVELER_ROMFSDEMO
+
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <stdio.h>
+
+#include <nuttx/fs/ramdisk.h>
+
+#include "trv_romfs.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#ifndef CONFIG_FS_ROMFS
+#  error You must select CONFIG_FS_ROMFS in your configuration file
+#endif
+
+#ifdef CONFIG_DISABLE_MOUNTPOINT
+#  error You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT
+#endif
+
+/* Describe the ROMFS file system */
+
+#define SECTORSIZE   512
+#define NSECTORS(b)  (((b)+SECTORSIZE-1)/SECTORSIZE)
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: trv_mount_world
+ *
+ * Description:
+ *   Mount the demo world as a ROMFS file system mounted at 'mountpoint'
+ *
+ ****************************************************************************/
+
+int trv_mount_world(int minor, FAR const char *mountpoint)
+{
+  char devpath[16];
+  int ret;
+
+  /* Create a ROM disk for the ROMFS filesystem */
+
+  ret = romdisk_register(minor, (FAR uint8_t *)trv_romfs_img,
+                         NSECTORS(trv_romfs_img_len), SECTORSIZE);
+  if (ret < 0)
+    {
+      return ret;
+    }
+
+  /* Get the ROM disk device name */
+
+  snprintf(devpath, 16, "/dev/ram%d", minor);
+
+  /* Mount the file system */
+
+  ret = mount(devpath, mountpoint, "romfs", MS_RDONLY, NULL);
+  return ret;
+}
+
+#endif /* CONFIG_GRAPHICS_TRAVELER_ROMFSDEMO */