text: /****************************************************************************
   * apps/nshlib/nsh_romfsetc.c
   *
   *   Copyright (C) 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.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <sys/mount.h>
  #include <sys/boardctl.h>
  #include <debug.h>
  #include <errno.h>
  
  #include <nuttx/drivers/ramdisk.h>
  
  #include "nsh.h"
  
  #ifdef CONFIG_NSH_ROMFSETC
  
  /* Should we use the default ROMFS image?  Or a custom, board-specific
   * ROMFS image?
   */
  
  #ifdef CONFIG_NSH_ARCHROMFS
  #  include <arch/board/nsh_romfsimg.h>
  #elif defined(CONFIG_NSH_CUSTOMROMFS)
  #  include CONFIG_NSH_CUSTOMROMFS_HEADER
  #else /* if defined(CONFIG_NSH_DEFAULTROMFS) */
  #  include "nsh_romfsimg.h"
  #endif
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  #ifdef CONFIG_DISABLE_MOUNTPOINT
  #  error You must not disable mountpoints via CONFIG_DISABLE_MOUNTPOINT
  #endif
  
  #if defined(CONFIG_NSH_CROMFSETC)
  #  ifndef CONFIG_FS_CROMFS
  #    error You must select CONFIG_FS_CROMFS in your configuration file
  #  endif
  #else
  #  ifndef CONFIG_FS_ROMFS
  #    error You must select CONFIG_FS_ROMFS in your configuration file
  #  endif
  #  ifndef CONFIG_BOARDCTL_ROMDISK
  #    error You must select CONFIG_BOARDCTL_ROMDISK in your configuration file
  #  endif
  #endif
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: nsh_romfsetc
   ****************************************************************************/
  
  int nsh_romfsetc(void)
  {
    int  ret;
  
  #ifndef CONFIG_NSH_CROMFSETC
    struct boardioc_romdisk_s desc;
  
    /* Create a ROM disk for the /etc filesystem */
  
    desc.minor    = CONFIG_NSH_ROMFSDEVNO;     /* Minor device number of the RAM disk. */
    desc.nsectors = NSECTORS(romfs_img_len);   /* The number of sectors in the RAM disk */
    desc.sectsize = CONFIG_NSH_ROMFSSECTSIZE;  /* The size of one sector in bytes */
    desc.image    = romfs_img;                 /* File system image */
  
    ret = boardctl(BOARDIOC_ROMDISK, (uintptr_t)&desc);
    if (ret < 0)
      {
        ferr("ERROR: boardctl(BOARDIOC_ROMDISK) failed: %d\n", -ret);
        return ERROR;
      }
  #endif
  
    /* Mount the file system */
  
    finfo("Mounting ROMFS filesystem at target=%s with source=%s\n",
          CONFIG_NSH_ROMFSMOUNTPT, MOUNT_DEVNAME);
  
  #if defined(CONFIG_NSH_CROMFSETC)
    ret = mount(MOUNT_DEVNAME, CONFIG_NSH_ROMFSMOUNTPT, "cromfs", MS_RDONLY, NULL);
  #else
    ret = mount(MOUNT_DEVNAME, CONFIG_NSH_ROMFSMOUNTPT, "romfs", MS_RDONLY, NULL);
  #endif
    if (ret < 0)
      {
        ferr("ERROR: mount(%s,%s,romfs) failed: %d\n",
             MOUNT_DEVNAME, CONFIG_NSH_ROMFSMOUNTPT, errno);
        return ERROR;
      }
  
    return OK;
  }
  
  #endif /* CONFIG_NSH_ROMFSETC */
  