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tape: fix scsi volume_statistics and cartridge_memory for quantum drives

This commit is contained in:
Dietmar Maurer 2021-03-10 14:13:48 +01:00
parent 70d00e0149
commit 5ef4c7bcd3
2 changed files with 15 additions and 6 deletions
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8
src/tape/drive/mam.rs
View File

@ -115,7 +115,7 @@ fn read_tape_mam<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
.map(|v| v.to_vec())
}
/// Read Medium auxiliary memory attributes (cartridge memory) using raw SCSI command.
/// Read Medium auxiliary memory attributes (cartridge memory) using raw SCSI command.
pub fn read_mam_attributes<F: AsRawFd>(file: &mut F) -> Result<Vec<MamAttribute>, Error> {
let data = read_tape_mam(file)?;
@ -131,8 +131,12 @@ fn decode_mam_attributes(data: &[u8]) -> Result<Vec<MamAttribute>, Error> {
let expected_len = data_len as usize;
if reader.len() != expected_len {
if reader.len() < expected_len {
bail!("read_mam_attributes: got unexpected data len ({} != {})", reader.len(), expected_len);
} else if reader.len() > expected_len {
// Note: Quantum hh7 returns the allocation_length instead of real data_len
reader = &data[4..expected_len+4];
}
let mut list = Vec::new();

13
src/tape/drive/volume_statistics.rs
View File

@ -27,8 +27,8 @@ pub fn read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Lp17VolumeSta
fn sg_read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let buffer_size = 8192;
let mut sg_raw = SgRaw::new(file, buffer_size)?;
let alloc_len: u16 = 8192;
let mut sg_raw = SgRaw::new(file, alloc_len as usize)?;
let mut cmd = Vec::new();
cmd.push(0x4D); // LOG SENSE
@ -38,7 +38,7 @@ fn sg_read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error>
cmd.push(0);
cmd.push(0);
cmd.push(0);
cmd.push((buffer_size >> 8) as u8); cmd.push(0); // alloc len
cmd.extend(&alloc_len.to_be_bytes()); // alloc len
cmd.push(0u8); // control byte
sg_raw.do_command(&cmd)
@ -142,8 +142,13 @@ fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error>
let page_len: u16 = unsafe { reader.read_be_value()? };
if (page_len as usize + 4) != data.len() {
let page_len = page_len as usize;
if (page_len + 4) > data.len() {
bail!("invalid page length");
} else {
// Note: Quantum hh7 returns the allocation_length instead of real data_len
reader = &data[4..page_len+4];
}
let mut stat = Lp17VolumeStatistics::default();