u-boot/scripts/avbtool.py

775       self._image = open(self.filename, 'rb')
777       self._image = open(self.filename, 'r+b')
778     self._image.seek(0, os.SEEK_END)
779     self.image_size = self._image.tell()
781     self._image.seek(0, os.SEEK_SET)
782     header_bin = self._image.read(struct.calcsize(self.HEADER_FORMAT))
811       chunk_offset = self._image.tell()
813       header_bin = self._image.read(struct.calcsize(ImageChunk.FORMAT))
827                                        self._image.tell(),
829         self._image.seek(data_sz, os.SEEK_CUR)
835         fill_data = self._image.read(4)
856         self._image.read(4)
864     self._sparse_end = self._image.tell()
870     junk_len = len(self._image.read())
891     self._image.seek(self.NUM_CHUNKS_AND_BLOCKS_OFFSET, os.SEEK_SET)
892     self._image.write(struct.pack(self.NUM_CHUNKS_AND_BLOCKS_FORMAT,
913       self._image.seek(0, os.SEEK_END)
917       self._image.truncate(self._image.tell() + num_bytes)
925     self._image.seek(self._sparse_end, os.SEEK_SET)
926     self._image.write(struct.pack(ImageChunk.FORMAT,
950       self._image.seek(0, os.SEEK_END)
951       self._image.write(data)
959     self._image.seek(self._sparse_end, os.SEEK_SET)
960     self._image.write(struct.pack(ImageChunk.FORMAT,
966     self._image.write(data)
989       self._image.seek(0, os.SEEK_END)
990       self._image.write(fill_data * (size//4))
998     self._image.seek(self._sparse_end, os.SEEK_SET)
999     self._image.write(struct.pack(ImageChunk.FORMAT,
1004     self._image.write(fill_data)
1036       self._image.seek(self._file_pos)
1037       data = self._image.read(size)
1052         self._image.seek(chunk.input_offset + chunk_pos_offset)
1053         data.extend(self._image.read(chunk_pos_to_go))
1093       self._image.truncate(size)
1128         self._image.seek(chunk.chunk_offset)
1129         self._image.write(struct.pack(ImageChunk.FORMAT,
1145       self._image.truncate(truncate_at)