C++ (Cpp) GRUB_EFI_NEXT_DEVICE_PATH Beispiele

Beispiel #1

Datei: efidisk.c Projekt: jnbek/grub2-fedora

/* Return the device path node right before the end node.  */
static grub_efi_device_path_t *
find_last_device_path (const grub_efi_device_path_t *dp)
{
  grub_efi_device_path_t *next, *p;

  if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (dp))
    return 0;

  for (p = (grub_efi_device_path_t *) dp, next = GRUB_EFI_NEXT_DEVICE_PATH (p);
       ! GRUB_EFI_END_ENTIRE_DEVICE_PATH (next);
       p = next, next = GRUB_EFI_NEXT_DEVICE_PATH (next))
    ;

  return p;
}

Beispiel #2

Datei: efi.c Projekt: Arvian/GRUB2

char *
grub_efi_get_filename (grub_efi_device_path_t *dp)
{
  char *name = 0;

  while (1)
    {
      grub_efi_uint8_t type = GRUB_EFI_DEVICE_PATH_TYPE (dp);
      grub_efi_uint8_t subtype = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp);

      if (type == GRUB_EFI_END_DEVICE_PATH_TYPE)
	break;
      else if (type == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE
	       && subtype == GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE)
	{
	  grub_efi_file_path_device_path_t *fp;
	  grub_efi_uint16_t len;
	  char *p;
	  grub_size_t size;

	  if (name)
	    {
	      size = grub_strlen (name);
	      name[size] = '/';
	      size++;
	    }
	  else
	    size = 0;

	  len = ((GRUB_EFI_DEVICE_PATH_LENGTH (dp) - 4)
		 / sizeof (grub_efi_char16_t));
	  p = grub_realloc (name, size + len * 4 + 1);
	  if (! p)
	    {
	      grub_free (name);
	      return 0;
	    }

	  name = p;
	  fp = (grub_efi_file_path_device_path_t *) dp;
	  *grub_utf16_to_utf8 ((grub_uint8_t *) name + size,
			       fp->path_name, len) = '\0';
	}

      dp = GRUB_EFI_NEXT_DEVICE_PATH (dp);
    }

  if (name)
    {
      /* EFI breaks paths with backslashes.  */
      char *p;

      for (p = name; *p; p++)
	if (*p == '\\')
	  *p = '/';
    }

  return name;
}

Beispiel #3

Datei: efidisk.c Projekt: jnbek/grub2-fedora

/* Duplicate a device path.  */
static grub_efi_device_path_t *
duplicate_device_path (const grub_efi_device_path_t *dp)
{
  grub_efi_device_path_t *p;
  grub_size_t total_size = 0;

  for (p = (grub_efi_device_path_t *) dp;
       ;
       p = GRUB_EFI_NEXT_DEVICE_PATH (p))
    {
      total_size += GRUB_EFI_DEVICE_PATH_LENGTH (p);
      if (GRUB_EFI_END_ENTIRE_DEVICE_PATH (p))
	break;
    }

  p = grub_malloc (total_size);
  if (! p)
    return 0;

  grub_memcpy (p, dp, total_size);
  return p;
}

Beispiel #4

Datei: efi.c Projekt: GangHoyong/SecurityBootloader

char *
grub_efi_get_filename (grub_efi_device_path_t *dp0)
{
  char *name = 0, *p, *pi;
  grub_size_t filesize = 0;
  grub_efi_device_path_t *dp;

  dp = dp0;

  while (1)
    {
      grub_efi_uint8_t type = GRUB_EFI_DEVICE_PATH_TYPE (dp);
      grub_efi_uint8_t subtype = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp);

      if (type == GRUB_EFI_END_DEVICE_PATH_TYPE)
	break;
      if (type == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE
	       && subtype == GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE)
	{
	  grub_efi_uint16_t len;
	  len = ((GRUB_EFI_DEVICE_PATH_LENGTH (dp) - 4)
		 / sizeof (grub_efi_char16_t));
	  filesize += GRUB_MAX_UTF8_PER_UTF16 * len + 2;
	}

      dp = GRUB_EFI_NEXT_DEVICE_PATH (dp);
    }

  if (!filesize)
    return NULL;

  dp = dp0;

  p = name = grub_malloc (filesize);
  if (!name)
    return NULL;

  while (1)
    {
      grub_efi_uint8_t type = GRUB_EFI_DEVICE_PATH_TYPE (dp);
      grub_efi_uint8_t subtype = GRUB_EFI_DEVICE_PATH_SUBTYPE (dp);

      if (type == GRUB_EFI_END_DEVICE_PATH_TYPE)
	break;
      else if (type == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE
	       && subtype == GRUB_EFI_FILE_PATH_DEVICE_PATH_SUBTYPE)
	{
	  grub_efi_file_path_device_path_t *fp;
	  grub_efi_uint16_t len;

	  *p++ = '/';

	  len = ((GRUB_EFI_DEVICE_PATH_LENGTH (dp) - 4)
		 / sizeof (grub_efi_char16_t));
	  fp = (grub_efi_file_path_device_path_t *) dp;

	  p = (char *) grub_utf16_to_utf8 ((unsigned char *) p, fp->path_name, len);
	}

      dp = GRUB_EFI_NEXT_DEVICE_PATH (dp);
    }

  *p = '\0';

  for (pi = name, p = name; *pi;)
    {
      /* EFI breaks paths with backslashes.  */
      if (*pi == '\\' || *pi == '/')
	{
	  *p++ = '/';
	  while (*pi == '\\' || *pi == '/')
	    pi++;
	  continue;
	}
      *p++ = *pi++;
    }
  *p = '\0';

  return name;
}