Exemplo n.º 1
0
static int
test_gzip_header (grub_file_t file)
{
    struct {
        grub_uint16_t magic;
        grub_uint8_t method;
        grub_uint8_t flags;
        grub_uint32_t timestamp;
        grub_uint8_t extra_flags;
        grub_uint8_t os_type;
    } hdr;
    grub_uint16_t extra_len;
    grub_uint32_t orig_len;
    grub_gzio_t gzio = file->data;

    if (grub_file_tell (gzio->file) != 0)
        grub_file_seek (gzio->file, 0);

    /*
     *  This checks if the file is gzipped.  If a problem occurs here
     *  (other than a real error with the disk) then we don't think it
     *  is a compressed file, and simply mark it as such.
     */
    if (grub_file_read (gzio->file, &hdr, 10) != 10
            || ((hdr.magic != GZIP_MAGIC)
                && (hdr.magic != OLD_GZIP_MAGIC)))
        return 0;

    /*
     *  This does consistency checking on the header data.  If a
     *  problem occurs from here on, then we have corrupt or otherwise
     *  bad data, and the error should be reported to the user.
     */
    if (hdr.method != DEFLATED
            || (hdr.flags & UNSUPPORTED_FLAGS)
            || ((hdr.flags & EXTRA_FIELD)
                && (grub_file_read (gzio->file, &extra_len, 2) != 2
                    || eat_field (gzio->file,
                                  grub_le_to_cpu16 (extra_len))))
            || ((hdr.flags & ORIG_NAME) && eat_field (gzio->file, -1))
            || ((hdr.flags & COMMENT) && eat_field (gzio->file, -1)))
        return 0;

    gzio->data_offset = grub_file_tell (gzio->file);

    /* FIXME: don't do this on not easily seekable files.  */
    {
        grub_file_seek (gzio->file, grub_file_size (gzio->file) - 4);
        if (grub_file_read (gzio->file, &orig_len, 4) != 4)
            return 0;
        /* FIXME: this does not handle files whose original size is over 4GB.
           But how can we know the real original size?  */
        file->size = grub_le_to_cpu32 (orig_len);
    }

    initialize_tables (gzio);

    return 1;
}
Exemplo n.º 2
0
Arquivo: compat.c Projeto: xk/bits
long ftell(FILE *stream)
{
    grub_errno = GRUB_ERR_NONE;
    if (stream == stdin || stream == stdout || stream == stderr)
        return 0;
    return grub_file_tell(stream);
}
Exemplo n.º 3
0
Arquivo: gzio.c Projeto: TemmeR/grub2
static int
get_byte (grub_file_t file)
{
  grub_gzio_t gzio = file->data;

  if (grub_file_tell (gzio->file) == (grub_off_t) gzio->data_offset
      || gzio->inbuf_d == INBUFSIZ)
    {
      gzio->inbuf_d = 0;
      grub_file_read (gzio->file, gzio->inbuf, INBUFSIZ);
    }

  return gzio->inbuf[gzio->inbuf_d++];
}
Exemplo n.º 4
0
/* Jump to next block and read its header.  */
static int
jump_block (struct grub_lzopio *lzopio)
{
  /* only jump if block was not decompressed (and read from disk) */
  if (!lzopio->block.udata)
    {
      grub_off_t off = grub_file_tell (lzopio->file) + lzopio->block.csize;

      if (grub_file_seek (lzopio->file, off) == ((grub_off_t) - 1))
	return -1;
    }

  return read_block_header (lzopio);
}
Exemplo n.º 5
0
static int
get_byte (grub_gzio_t gzio)
{
    if (gzio->mem_input)
    {
        if (gzio->mem_input_off < gzio->mem_input_size)
            return gzio->mem_input[gzio->mem_input_off++];
        return 0;
    }

    if (grub_file_tell (gzio->file) == (grub_off_t) gzio->data_offset
            || gzio->inbuf_d == INBUFSIZ)
    {
        gzio->inbuf_d = 0;
        grub_file_read (gzio->file, gzio->inbuf, INBUFSIZ);
    }

    return gzio->inbuf[gzio->inbuf_d++];
}
Exemplo n.º 6
0
static grub_file_t
grub_xzio_open (grub_file_t io)
{
  grub_file_t file;
  grub_xzio_t xzio;

  file = (grub_file_t) grub_zalloc (sizeof (*file));
  if (!file)
    return 0;

  xzio = grub_zalloc (sizeof (*xzio));
  if (!xzio)
    {
      grub_free (file);
      return 0;
    }

  xzio->file = io;
  xzio->saved_offset = 0;

  file->device = io->device;
  file->offset = 0;
  file->data = xzio;
  file->read_hook = 0;
  file->fs = &grub_xzio_fs;
  file->size = GRUB_FILE_SIZE_UNKNOWN;
  file->not_easly_seekable = 1;

  if (grub_file_tell (xzio->file) != 0)
    grub_file_seek (xzio->file, 0);

  /* Allocated 64KiB for dictionary.
   * Decoder will relocate if bigger is needed.  */
  xzio->dec = xz_dec_init (1 << 16);
  if (!xzio->dec)
    {
      grub_free (file);
      grub_free (xzio);
      return 0;
    }

  xzio->buf.in = xzio->inbuf;
  xzio->buf.in_pos = 0;
  xzio->buf.in_size = 0;
  xzio->buf.out = xzio->outbuf;
  xzio->buf.out_pos = 0;
  xzio->buf.out_size = XZBUFSIZ;

  /* FIXME: don't test footer on not easily seekable files.  */
  if (!test_header (file) || !test_footer (file))
    {
      grub_errno = GRUB_ERR_NONE;
      grub_file_seek (io, 0);
      xz_dec_end (xzio->dec);
      grub_free (xzio);
      grub_free (file);

      return io;
    }

  return file;
}
Exemplo n.º 7
0
/* Load a font and add it to the beginning of the global font list.
   Returns 0 upon success, nonzero upon failure.  */
grub_font_t
grub_font_load (const char *filename)
{
  grub_file_t file = 0;
  struct font_file_section section;
  char magic[4];
  grub_font_t font = 0;

#if FONT_DEBUG >= 1
  grub_dprintf ("font", "add_font(%s)\n", filename);
#endif

  if (filename[0] == '(' || filename[0] == '/' || filename[0] == '+')
    file = grub_buffile_open (filename, 1024);
  else
    {
      const char *prefix = grub_env_get ("prefix");
      char *fullname, *ptr;
      if (!prefix)
	{
	  grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("variable `%s' isn't set"),
		      "prefix");
	  goto fail;
	}
      fullname = grub_malloc (grub_strlen (prefix) + grub_strlen (filename) + 1
			      + sizeof ("/fonts/") + sizeof (".pf2"));
      if (!fullname)
	goto fail;
      ptr = grub_stpcpy (fullname, prefix);
      ptr = grub_stpcpy (ptr, "/fonts/");
      ptr = grub_stpcpy (ptr, filename);
      ptr = grub_stpcpy (ptr, ".pf2");
      *ptr = 0;
      file = grub_buffile_open (fullname, 1024);
      grub_free (fullname);
    }
  if (!file)
    goto fail;

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "file opened\n");
#endif

  /* Read the FILE section.  It indicates the file format.  */
  if (open_section (file, &section) != 0)
    goto fail;

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "opened FILE section\n");
#endif
  if (grub_memcmp (section.name, FONT_FORMAT_SECTION_NAMES_FILE,
		   sizeof (FONT_FORMAT_SECTION_NAMES_FILE) - 1) != 0)
    {
      grub_error (GRUB_ERR_BAD_FONT,
		  "font file format error: 1st section must be FILE");
      goto fail;
    }

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "section name ok\n");
#endif
  if (section.length != 4)
    {
      grub_error (GRUB_ERR_BAD_FONT,
		  "font file format error (file type ID length is %d "
		  "but should be 4)", section.length);
      goto fail;
    }

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "section length ok\n");
#endif
  /* Check the file format type code.  */
  if (grub_file_read (file, magic, 4) != 4)
    goto fail;

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "read magic ok\n");
#endif

  if (grub_memcmp (magic, FONT_FORMAT_PFF2_MAGIC, 4) != 0)
    {
      grub_error (GRUB_ERR_BAD_FONT, "invalid font magic %x %x %x %x",
		  magic[0], magic[1], magic[2], magic[3]);
      goto fail;
    }

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "compare magic ok\n");
#endif

  /* Allocate the font object.  */
  font = (grub_font_t) grub_zalloc (sizeof (struct grub_font));
  if (!font)
    goto fail;

  font_init (font);
  font->file = file;

#if FONT_DEBUG >= 3
  grub_dprintf ("font", "allocate font ok; loading font info\n");
#endif

  /* Load the font information.  */
  while (1)
    {
      if (open_section (file, &section) != 0)
	{
	  if (section.eof)
	    break;		/* Done reading the font file.  */
	  else
	    goto fail;
	}

#if FONT_DEBUG >= 2
      grub_dprintf ("font", "opened section %c%c%c%c ok\n",
		   section.name[0], section.name[1],
		   section.name[2], section.name[3]);
#endif

      if (grub_memcmp (section.name, FONT_FORMAT_SECTION_NAMES_FONT_NAME,
		       sizeof (FONT_FORMAT_SECTION_NAMES_FONT_NAME) - 1) == 0)
	{
	  font->name = read_section_as_string (&section);
	  if (!font->name)
	    goto fail;
	}
      else if (grub_memcmp (section.name,
			    FONT_FORMAT_SECTION_NAMES_POINT_SIZE,
			    sizeof (FONT_FORMAT_SECTION_NAMES_POINT_SIZE) -
			    1) == 0)
	{
	  if (read_section_as_short (&section, &font->point_size) != 0)
	    goto fail;
	}
      else if (grub_memcmp (section.name, FONT_FORMAT_SECTION_NAMES_WEIGHT,
			    sizeof (FONT_FORMAT_SECTION_NAMES_WEIGHT) - 1)
	       == 0)
	{
	  char *wt;
	  wt = read_section_as_string (&section);
	  if (!wt)
	    continue;
	  /* Convert the weight string 'normal' or 'bold' into a number.  */
	  if (grub_strcmp (wt, "normal") == 0)
	    font->weight = FONT_WEIGHT_NORMAL;
	  else if (grub_strcmp (wt, "bold") == 0)
	    font->weight = FONT_WEIGHT_BOLD;
	  grub_free (wt);
	}
      else if (grub_memcmp (section.name,
			    FONT_FORMAT_SECTION_NAMES_MAX_CHAR_WIDTH,
			    sizeof (FONT_FORMAT_SECTION_NAMES_MAX_CHAR_WIDTH)
			    - 1) == 0)
	{
	  if (read_section_as_short (&section, &font->max_char_width) != 0)
	    goto fail;
	}
      else if (grub_memcmp (section.name,
			    FONT_FORMAT_SECTION_NAMES_MAX_CHAR_HEIGHT,
			    sizeof (FONT_FORMAT_SECTION_NAMES_MAX_CHAR_HEIGHT)
			    - 1) == 0)
	{
	  if (read_section_as_short (&section, &font->max_char_height) != 0)
	    goto fail;
	}
      else if (grub_memcmp (section.name,
			    FONT_FORMAT_SECTION_NAMES_ASCENT,
			    sizeof (FONT_FORMAT_SECTION_NAMES_ASCENT) - 1)
	       == 0)
	{
	  if (read_section_as_short (&section, &font->ascent) != 0)
	    goto fail;
	}
      else if (grub_memcmp (section.name, FONT_FORMAT_SECTION_NAMES_DESCENT,
			    sizeof (FONT_FORMAT_SECTION_NAMES_DESCENT) - 1)
	       == 0)
	{
	  if (read_section_as_short (&section, &font->descent) != 0)
	    goto fail;
	}
      else if (grub_memcmp (section.name,
			    FONT_FORMAT_SECTION_NAMES_CHAR_INDEX,
			    sizeof (FONT_FORMAT_SECTION_NAMES_CHAR_INDEX) -
			    1) == 0)
	{
	  if (load_font_index (file, section.length, font) != 0)
	    goto fail;
	}
      else if (grub_memcmp (section.name, FONT_FORMAT_SECTION_NAMES_DATA,
			    sizeof (FONT_FORMAT_SECTION_NAMES_DATA) - 1) == 0)
	{
	  /* When the DATA section marker is reached, we stop reading.  */
	  break;
	}
      else
	{
	  /* Unhandled section type, simply skip past it.  */
#if FONT_DEBUG >= 3
	  grub_dprintf ("font", "Unhandled section type, skipping.\n");
#endif
	  grub_off_t section_end = grub_file_tell (file) + section.length;
	  if ((int) grub_file_seek (file, section_end) == -1)
	    goto fail;
	}
    }

  if (!font->name)
    {
      grub_dprintf ("font", "Font has no name.\n");
      font->name = grub_strdup ("Unknown");
    }

#if FONT_DEBUG >= 1
  grub_dprintf ("font", "Loaded font `%s'.\n"
	       "Ascent=%d Descent=%d MaxW=%d MaxH=%d Number of characters=%d.\n",
	       font->name,
	       font->ascent, font->descent,
	       font->max_char_width, font->max_char_height, font->num_chars);
#endif

  if (font->max_char_width == 0
      || font->max_char_height == 0
      || font->num_chars == 0
      || font->char_index == 0 || font->ascent == 0 || font->descent == 0)
    {
      grub_error (GRUB_ERR_BAD_FONT,
		  "invalid font file: missing some required data");
      goto fail;
    }

  /* Add the font to the global font registry.  */
  if (register_font (font) != 0)
    goto fail;

  return font;

fail:
  if (file)
    grub_file_close (file);
  if (font)
    font->file = 0;

  free_font (font);
  return 0;
}
Exemplo n.º 8
0
static grub_err_t
grub_video_reader_tga (struct grub_video_bitmap **bitmap,
                       const char *filename)
{
  grub_file_t file;
  grub_ssize_t pos;
  struct grub_tga_header header;
  int has_alpha;

  file = grub_buffile_open (filename, 0);
  if (! file)
    return grub_errno;

  /* TGA Specification states that we SHOULD start by reading
     ID from end of file, but we really don't care about that as we are
     not going to support developer area & extensions at this point.  */

  /* Read TGA header from beginning of file.  */
  if (grub_file_read (file, &header, sizeof (header))
      != sizeof (header))
    {
      grub_file_close (file);
      return grub_errno;
    }

  /* Skip ID field.  */
  pos = grub_file_tell (file);
  pos += header.id_length;
  grub_file_seek (file, pos);
  if (grub_errno != GRUB_ERR_NONE)
    {
      grub_file_close (file);
      return grub_errno;
    }

#if defined(TGA_DEBUG)
  grub_printf("tga: header\n");
  dump_int_field(header.id_length);
  dump_int_field(header.color_map_type);
  dump_int_field(header.image_type);
  dump_int_field(header.color_map_first_index);
  dump_int_field(header.color_map_length);
  dump_int_field(header.color_map_bpp);
  dump_int_field(header.image_x_origin);
  dump_int_field(header.image_y_origin);
  dump_int_field(header.image_width);
  dump_int_field(header.image_height);
  dump_int_field(header.image_bpp);
  dump_int_field(header.image_descriptor);
#endif

  /* Check that bitmap encoding is supported.  */
  switch (header.image_type)
    {
      case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
      case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
        break;

      default:
        grub_file_close (file);
        return grub_error (GRUB_ERR_BAD_FILE_TYPE,
                           "unsupported bitmap format (unknown encoding)");
    }

  /* Check that bitmap depth is supported.  */
  switch (header.image_bpp)
    {
      case 24:
        has_alpha = 0;
        break;

      case 32:
        has_alpha = 1;
        break;

      default:
        grub_file_close (file);
        return grub_error (GRUB_ERR_BAD_FILE_TYPE,
                           "unsupported bitmap format (bpp=%d)",
                           header.image_bpp);
    }

  /* Allocate bitmap.  If there is alpha information store it too.  */
  if (has_alpha)
    {
      grub_video_bitmap_create (bitmap, header.image_width,
                                header.image_height,
                                GRUB_VIDEO_BLIT_FORMAT_RGBA_8888);
      if (grub_errno != GRUB_ERR_NONE)
        {
          grub_file_close (file);
          return grub_errno;
        }

      /* Load bitmap data.  */
      switch (header.image_type)
        {
          case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
            tga_load_truecolor_R8G8B8A8 (*bitmap, &header, file);
            break;

          case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
            tga_load_truecolor_rle_R8G8B8A8 (*bitmap, &header, file);
            break;
        }
    }
  else
    {
      grub_video_bitmap_create (bitmap, header.image_width,
                                header.image_height,
                                GRUB_VIDEO_BLIT_FORMAT_RGB_888);
      if (grub_errno != GRUB_ERR_NONE)
        {
          grub_file_close (file);
          return grub_errno;
        }

      /* Load bitmap data.  */
      switch (header.image_type)
        {
          case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
            tga_load_truecolor_R8G8B8 (*bitmap, &header, file);
            break;

          case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
            tga_load_truecolor_rle_R8G8B8 (*bitmap, &header, file);
            break;
        }
    }

  /* If there was a loading problem, destroy bitmap.  */
  if (grub_errno != GRUB_ERR_NONE)
    {
      grub_video_bitmap_destroy (*bitmap);
      *bitmap = 0;
    }

  grub_file_close (file);
  return grub_errno;
}
Exemplo n.º 9
0
/* Read block header from file, after successful exit file points to
 * beginning of block data.  */
static int
read_block_header (struct grub_lzopio *lzopio)
{
  lzopio->saved_off += lzopio->block.usize;

  /* Free cached block data if any.  */
  grub_free (lzopio->block.udata);
  grub_free (lzopio->block.cdata);
  lzopio->block.udata = NULL;
  lzopio->block.cdata = NULL;

  if (grub_file_read (lzopio->file, &lzopio->block.usize,
		      sizeof (lzopio->block.usize)) !=
      sizeof (lzopio->block.usize))
    return -1;

  lzopio->block.usize = grub_be_to_cpu32 (lzopio->block.usize);

  /* Last block has uncompressed data size == 0 and no other fields.  */
  if (lzopio->block.usize == 0)
    {
      if (grub_file_tell (lzopio->file) == grub_file_size (lzopio->file))
	return 0;
      else
	return -1;
    }

  /* Read compressed data block size.  */
  if (grub_file_read (lzopio->file, &lzopio->block.csize,
		      sizeof (lzopio->block.csize)) !=
      sizeof (lzopio->block.csize))
    return -1;

  lzopio->block.csize = grub_be_to_cpu32 (lzopio->block.csize);

  /* Corrupted.  */
  if (lzopio->block.csize > lzopio->block.usize)
    return -1;

  /* Read checksum of uncompressed data.  */
  if (lzopio->has_ucheck)
    {
      if (grub_file_read (lzopio->file, &lzopio->block.ucheck,
			  sizeof (lzopio->block.ucheck)) !=
	  sizeof (lzopio->block.ucheck))
	return -1;

      lzopio->block.ucheck = lzopio->block.ucheck;
    }

  /* Read checksum of compressed data.  */
  if (lzopio->has_ccheck)
    {
      /* Incompressible data block.  */
      if (lzopio->block.csize == lzopio->block.usize)
	{
	  lzopio->block.ccheck = lzopio->block.ucheck;
	}
      else
	{
	  if (grub_file_read (lzopio->file, &lzopio->block.ccheck,
			      sizeof (lzopio->block.ccheck)) !=
	      sizeof (lzopio->block.ccheck))
	    return -1;

	  lzopio->block.ccheck = lzopio->block.ccheck;
	}
    }

  return 0;
}
Exemplo n.º 10
0
static grub_err_t
grub_video_reader_tga (struct grub_video_bitmap **bitmap,
                       const char *filename)
{
  grub_ssize_t pos;
  struct tga_data data;

  grub_memset (&data, 0, sizeof (data));

  data.file = grub_buffile_open (filename, 0);
  if (! data.file)
    return grub_errno;

  /* TGA Specification states that we SHOULD start by reading
     ID from end of file, but we really don't care about that as we are
     not going to support developer area & extensions at this point.  */

  /* Read TGA header from beginning of file.  */
  if (grub_file_read (data.file, &data.hdr, sizeof (data.hdr))
      != sizeof (data.hdr))
    {
      grub_file_close (data.file);
      return grub_errno;
    }

  /* Skip ID field.  */
  pos = grub_file_tell (data.file);
  pos += data.hdr.id_length;
  grub_file_seek (data.file, pos);
  if (grub_errno != GRUB_ERR_NONE)
    {
      grub_file_close (data.file);
      return grub_errno;
    }

  grub_dprintf("tga", "tga: header\n");
  dump_int_field(data.hdr.id_length);
  dump_int_field(data.hdr.color_map_type);
  dump_int_field(data.hdr.image_type);
  dump_int_field(data.hdr.color_map_first_index);
  dump_int_field(data.hdr.color_map_length);
  dump_int_field(data.hdr.color_map_bpp);
  dump_int_field(data.hdr.image_x_origin);
  dump_int_field(data.hdr.image_y_origin);
  dump_int_field(data.hdr.image_width);
  dump_int_field(data.hdr.image_height);
  dump_int_field(data.hdr.image_bpp);
  dump_int_field(data.hdr.image_descriptor);

  data.image_width = grub_le_to_cpu16 (data.hdr.image_width);
  data.image_height = grub_le_to_cpu16 (data.hdr.image_height);

  /* Check that bitmap encoding is supported.  */
  switch (data.hdr.image_type)
    {
    case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
    case GRUB_TGA_IMAGE_TYPE_RLE_BLACK_AND_WHITE:
    case GRUB_TGA_IMAGE_TYPE_RLE_INDEXCOLOR:
      data.uses_rle = 1;
      break;
    case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
    case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_BLACK_AND_WHITE:
    case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_INDEXCOLOR:
      data.uses_rle = 0;
      break;

    default:
      grub_file_close (data.file);
      return grub_error (GRUB_ERR_BAD_FILE_TYPE,
			 "unsupported bitmap format (unknown encoding %d)", data.hdr.image_type);
    }

  data.bpp = data.hdr.image_bpp / 8;

  /* Check that bitmap depth is supported.  */
  switch (data.hdr.image_type)
    {
    case GRUB_TGA_IMAGE_TYPE_RLE_BLACK_AND_WHITE:
    case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_BLACK_AND_WHITE:
      if (data.hdr.image_bpp != 8)
	{
	  grub_file_close (data.file);
	  return grub_error (GRUB_ERR_BAD_FILE_TYPE,
			     "unsupported bitmap format (bpp=%d)",
			     data.hdr.image_bpp);
	}
      grub_video_bitmap_create (bitmap, data.image_width,
				data.image_height,
				GRUB_VIDEO_BLIT_FORMAT_RGB_888);
      if (grub_errno != GRUB_ERR_NONE)
	{
	  grub_file_close (data.file);
	  return grub_errno;
	}

      data.bitmap = *bitmap;
      /* Load bitmap data.  */
      tga_load_grayscale (&data);
      break;

    case GRUB_TGA_IMAGE_TYPE_RLE_INDEXCOLOR:
    case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_INDEXCOLOR:
      if (data.hdr.image_bpp != 8
	  || data.hdr.color_map_bpp != 24
	  || data.hdr.color_map_first_index != 0)
	{
	  grub_file_close (data.file);
	  return grub_error (GRUB_ERR_BAD_FILE_TYPE,
			     "unsupported bitmap format (bpp=%d)",
			     data.hdr.image_bpp);
	}
      grub_video_bitmap_create (bitmap, data.image_width,
				data.image_height,
				GRUB_VIDEO_BLIT_FORMAT_RGB_888);
      if (grub_errno != GRUB_ERR_NONE)
	{
	  grub_file_close (data.file);
	  return grub_errno;
	}

      data.bitmap = *bitmap;
      /* Load bitmap data.  */
      tga_load_palette (&data);
      tga_load_index_color (&data);
      break;

    case GRUB_TGA_IMAGE_TYPE_RLE_TRUECOLOR:
    case GRUB_TGA_IMAGE_TYPE_UNCOMPRESSED_TRUECOLOR:
      switch (data.hdr.image_bpp)
	{
	case 24:
	  grub_video_bitmap_create (bitmap, data.image_width,
				    data.image_height,
				    GRUB_VIDEO_BLIT_FORMAT_RGB_888);
	  if (grub_errno != GRUB_ERR_NONE)
	    {
	      grub_file_close (data.file);
	      return grub_errno;
	    }

	  data.bitmap = *bitmap;
	  /* Load bitmap data.  */
	  tga_load_truecolor_R8G8B8 (&data);
	  break;

	case 32:
	  grub_video_bitmap_create (bitmap, data.image_width,
				    data.image_height,
				    GRUB_VIDEO_BLIT_FORMAT_RGBA_8888);
	  if (grub_errno != GRUB_ERR_NONE)
	    {
	      grub_file_close (data.file);
	      return grub_errno;
	    }

	  data.bitmap = *bitmap;
	  /* Load bitmap data.  */
	  tga_load_truecolor_R8G8B8A8 (&data);
	  break;

	default:
	  grub_file_close (data.file);
	  return grub_error (GRUB_ERR_BAD_FILE_TYPE,
			     "unsupported bitmap format (bpp=%d)",
			     data.hdr.image_bpp);
	}
    }

  /* If there was a loading problem, destroy bitmap.  */
  if (grub_errno != GRUB_ERR_NONE)
    {
      grub_video_bitmap_destroy (*bitmap);
      *bitmap = 0;
    }

  grub_file_close (data.file);
  return grub_errno;
}