Z_EROFS_MAP_HEADER_END
#define Z_EROFS_FULL_INDEX_START(end) (Z_EROFS_MAP_HEADER_END(end) + 8)
const erofs_off_t ebase = Z_EROFS_MAP_HEADER_END(erofs_iloc(inode) +
erofs_off_t pos = round_up(Z_EROFS_MAP_HEADER_END(erofs_iloc(inode) +