text: /****************************************************************************
   * examples/nxflat/nxflat_main.c
   *
   *   Copyright (C) 2009, 2011, 2017 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 <nuttx/compiler.h>
  
  #include <sys/mount.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <string.h>
  #include <pthread.h>
  #include <debug.h>
  #include <errno.h>
  
  #include <nuttx/symtab.h>
  #include <nuttx/drivers/ramdisk.h>
  #include <nuttx/binfmt/binfmt.h>
  
  #include "tests/romfs.h"
  #include "tests/dirlist.h"
  #include "tests/symtab.h"
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /* Check configuration.  This is not all of the configuration settings that
   * are required -- only the more obvious.
   */
  
  #if CONFIG_NFILE_DESCRIPTORS < 1
  #  error "You must provide file descriptors via CONFIG_NFILE_DESCRIPTORS in your configuration file"
  #endif
  
  #ifdef CONFIG_BINFMT_DISABLE
  #  error "The binary loader is disabled (CONFIG_BINFMT_DISABLE)!"
  #endif
  
  #ifndef CONFIG_NXFLAT
  #  error "You must select CONFIG_NXFLAT in your configuration file"
  #endif
  
  #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 in your configuration file"
  #endif
  
  #ifdef CONFIG_BINFMT_DISABLE
  #  error "You must not disable loadable modules via CONFIG_BINFMT_DISABLE in your configuration file"
  #endif
  
  /* Describe the ROMFS file system */
  
  #define SECTORSIZE   512
  #define NSECTORS(b)  (((b)+SECTORSIZE-1)/SECTORSIZE)
  #define ROMFSDEV     "/dev/ram0"
  #define MOUNTPT      "/mnt/romfs"
  
  /* If CONFIG_DEBUG_FEATURES is enabled, use info/err instead of printf so
   * that the output will be synchronous with the debug output.
   */
  
  #ifdef CONFIG_CPP_HAVE_VARARGS
  #  ifdef CONFIG_DEBUG_INFO
  #    define message(format, ...)    syslog(LOG_INFO, format, ##__VA_ARGS__)
  #  else
  #    define message(format, ...)    printf(format, ##__VA_ARGS__)
  #  endif
  #  ifdef CONFIG_DEBUG_ERROR
  #    define errmsg(format, ...)     syslog(LOG_ERR, format, ##__VA_ARGS__)
  #  else
  #    define errmsg(format, ...)     fprintf(stderr, format, ##__VA_ARGS__)
  #  endif
  #else
  #  ifdef CONFIG_DEBUG_INFO
  #    define message                 _info
  #  else
  #    define message                 printf
  #  endif
  #  ifdef CONFIG_DEBUG_ERROR
  #    define errmsg                  _err
  #  else
  #    define errmsg                  printf
  #  endif
  #endif
  
  /****************************************************************************
   * Private Data
   ****************************************************************************/
  
  static const char delimiter[] =
    "****************************************************************************";
  
  #ifndef CONFIG_BINFMT_EXEPATH
  static char fullpath[128];
  #endif
  
  /****************************************************************************
   * Private Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: testheader
   ****************************************************************************/
  
  static inline void testheader(FAR const char *progname)
  {
    message("\n%s\n* Executing %s\n%s\n\n", delimiter, progname, delimiter);
  }
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: nxflat_main
   ****************************************************************************/
  
  #ifdef CONFIG_BUILD_KERNEL
  int main(int argc, FAR char *argv[])
  #else
  int nxflat_main(int argc, char *argv[])
  #endif
  {
    FAR char *args[1];
    int ret;
    int i;
  
    /* Create a ROM disk for the ROMFS filesystem */
  
    message("Registering romdisk\n");
    ret = romdisk_register(0, (FAR uint8_t *)romfs_img,
                           NSECTORS(romfs_img_len), SECTORSIZE);
    if (ret < 0)
      {
        errmsg("ERROR: romdisk_register failed: %d\n", ret);
        exit(1);
      }
  
    /* Mount the file system */
  
    message("Mounting ROMFS filesystem at target=%s with source=%s\n",
           MOUNTPT, ROMFSDEV);
  
    ret = mount(ROMFSDEV, MOUNTPT, "romfs", MS_RDONLY, NULL);
    if (ret < 0)
      {
        errmsg("ERROR: mount(%s,%s,romfs) failed: %s\n",
               ROMFSDEV, MOUNTPT, errno);
      }
  
  #if defined(CONFIG_BINFMT_EXEPATH) && !defined(CONFIG_PATH_INITIAL)
    /* Does the system support the PATH variable?  Has the PATH variable
     * already been set?  If YES and NO, then set the PATH variable to
     * the ROMFS mountpoint.
     */
  
    (void)setenv("PATH", MOUNTPT, 1);
  #endif
  
    /* Now excercise every progrm in the ROMFS file system */
  
    for (i = 0; dirlist[i]; i++)
      {
        FAR const char *filename;
  
        /* Output a seperated so that we can clearly discrinmate the output of
         * this program from the others.
         */
  
        testheader(dirlist[i]);
  
        /* If the binary loader does not support the PATH variable, then
         * create the full path to the executable program.  Otherwise,
         * use the relative path so that the binary loader will have to
         * search the PATH variable to find the executable.
         */
  
  #ifdef CONFIG_BINFMT_EXEPATH
        filename = dirlist[i];
  #else
        snprintf(fullpath, 128, "%s/%s", MOUNTPT, dirlist[i]);
        filename = fullpath;
  #endif
  
        /* Execute the NXFLAT module
         *
         * NOTE: The standard posix_spawn() interface would be more correct.
         * The non-standard exec() function is used because it provides a
         * simple way to pass the symbol table information needed to load the
         * program.  posix_spawn(), on the other hand, will assume that symbol
         * table information is available within the OS.
         */
  
        args[0] = NULL;
        ret = exec(filename, args, exports, NEXPORTS);
        if (ret < 0)
          {
            errmsg("ERROR: exec(%s) failed: %d\n", dirlist[i], errno);
          }
        else
          {
            message("Wait a bit for test completion\n");
            sleep(4);
          }
      }
  
    message("End-of-Test.. Exit-ing\n");
    return 0;
  }
  