108     let mut blk = [0; BLK_SIZE];  in get_or_generate_instance_salt()  localVariable
111             if payload_size > blk.len() {  in get_or_generate_instance_salt()
116             instance_img.read_block(payload_index, &mut blk).map_err(Error::FailedIo)?;  in get_or_generate_instance_salt()
118             let payload = &blk[..payload_size];  in get_or_generate_instance_salt()
143             assert!(body.len() + aead.aead().unwrap().max_overhead() < blk.len());  in get_or_generate_instance_salt()
144             let encrypted = aead.seal(&mut blk, body).map_err(Error::FailedSeal)?;  in get_or_generate_instance_salt()
147             instance_img.write_block(payload_index, &blk).map_err(Error::FailedIo)?;  in get_or_generate_instance_salt()
150             let (blk_header, blk_rest) = blk.split_at_mut(size_of::<EntryHeader>());  in get_or_generate_instance_salt()
153             instance_img.write_block(header_index, &blk).map_err(Error::FailedIo)?;  in get_or_generate_instance_salt()
221     let mut blk = [0; BLK_SIZE];  in locate_entry()  localVariable
224     partition.read_block(header_index, &mut blk).map_err(Error::FailedIo)?;  in locate_entry()
226     let _ = Header::from_bytes(&blk).ok_or(Error::InvalidInstanceImageHeader)?;  in locate_entry()
229         partition.read_block(header_index, &mut blk).map_err(Error::FailedIo)?;  in locate_entry()
231         let header: &EntryHeader = blk[..size_of::<EntryHeader>()].as_ref();  in locate_entry()