diff options
Diffstat (limited to 'apps/graphics/traveler/trv_romfs.c')
-rw-r--r-- | apps/graphics/traveler/trv_romfs.c | 106 |
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 */ |