Function rpmsgfs_mkpath

fs/rpmsgfs/rpmsgfs.c:206–273

 ****************************************************************************/

static void rpmsgfs_mkpath(FAR struct rpmsgfs_mountpt_s *fs,
                           FAR const char *relpath,
                           FAR char *path, int pathlen)
{
  int depth = 0;
  int first;
  int x;

  /* Copy base host path to output */

  strlcpy(path, fs->fs_root, pathlen);

  /* Be sure we aren't trying to use ".." to display outside of our
   * mounted path.
   */

  x = 0;
  while (relpath[x] == '/')
    {
      x++;
    }

  first = x;

  while (relpath[x] != '\0')
    {
      /* Test for ".." occurrence */

      if (strncmp(&relpath[x], "..", 2) == 0)
        {
          /* Reduce depth by 1 */

          depth--;
          x += 2;
        }

      else if (relpath[x] == '/' && relpath[x + 1] != '/' &&
               relpath[x + 1] != '\0')
        {
          depth++;
          x++;
        }
      else
        {
          x++;
        }
    }

  if (depth >= 0)
    {
      strlcat(path, &relpath[first], pathlen - strlen(path));
    }

  while (fs->timeout > 0)
    {
      struct stat buf;
      int ret;