tape: commit missing file

This commit is contained in:
Dietmar Maurer 2021-01-02 13:38:57 +01:00
parent abaa6d0ac9
commit c9fdd142a4

View File

@ -0,0 +1,137 @@
use std::io::Read;
use std::os::unix::io::AsRawFd;
use anyhow::{bail, format_err, Error};
use proxmox::tools::io::ReadExt;
use crate::{
tape::{
sgutils2::SgRaw,
},
};
bitflags::bitflags!{
/// Tape Alert Flags
///
/// See LTO SCSI Reference LOG_SENSE - LP 2Eh: TapeAlerts
pub struct TapeAlertFlags: u64 {
const READ_WARNING = 0x0001;
const WRITE_WARNING = 0002;
const HARD_ERROR = 0x0003;
const MEDIA = 0x0004;
const READ_FAILURE = 0x0005;
const WRITE_FAILURE = 0x0006;
const MEDIA_LIFE = 0x0007;
const NOT_DATA_GRADE = 0x0008;
const WRITE_PROTECT = 0x0009;
const NO_REMOVAL = 0x000A;
const CLEANING_MEDIA = 0x000B;
const UNSUPPORTED_FORMAT = 0x000C;
const UNRECOVERABLE_SNAPPED_TAPE = 0x000E;
const MEMORY_CHIP_IN_CARTRIDGE_FAILURE = 0x000F;
const FORCED_EJECT = 0x0010;
const READ_ONLY_FORMAT = 0x0011;
const TAPE_DIRECTORY_CORRUPTED = 0x0012;
const NEARING_MEDIA_LIFE = 0x0013;
const CLEAN_NOW = 0x0014;
const CLEAN_PERIODIC = 0x0015;
const EXPIRED_CLEANING_MEDIA = 0x0016;
const INVALID_CLEANING_TAPE = 0x0017;
const HOST_CHANNEL_FAILURE = 0x0019;
const COOLING_FAN_FAILURE = 0x001A;
const POWER_SUPPLY_FAILURE = 0x001B;
const HARDWARE_A = 0x001E;
const HARDWARE_B = 0x001F;
const INTERFACE = 0x0020;
const EJECT_MEDIA = 0x0021;
const DOWNLOAD_FAULT = 0x0022;
const DRIVE_TEMPERATURE = 0x0024;
const DRIVE_VOLTAGE = 0x0025;
const PREDICTIVE_FAILURE = 0x0026;
const DIAGNOSTICS_REQUIRED = 0x0027;
const LOADER_STRAY_TAPE = 0x0029;
const LOADER_HARDWARE = 0x002A;
const LOADER_MAGAZINE = 0x002D;
const DIMINISHED_NATIVE_CAPACITY = 0x0031;
const LOST_STATISTICS = 0x0032;
const TAPE_DIRECTORY_INVALID_AT_UNLOAD = 0x0033;
const TAPE_SYSTEM_AREA_WRITE_FAILURE = 0x0034;
const TAPE_SYSTEM_AREA_READ_FAILURE = 0x0035;
const NO_START_OF_DATA = 0x0036;
const LOADING_FAILURE = 0x0037;
const UNRECOVERABLE_UNLOAD_FAILURE = 0x0038;
const AUTOMATION_INTERFACE_FAILURE = 0x0039;
const FIRMWARE_FAILURE = 0x003A;
const WORM_INTEGRITY_CHECK_FAILED = 0x003B;
const WORM_OVERWRITE_ATTEMPTED = 0x003C;
const ENCRYPTION_POLICY_VIOLATION = 0x003D;
}
}
/// Read Tape Alert Flags using raw SCSI command.
pub fn read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<TapeAlertFlags, Error> {
let data = sg_read_tape_alert_flags(file)?;
decode_tape_alert_flags(&data)
}
fn sg_read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let mut sg_raw = SgRaw::new(file, 512)?;
let mut cmd = Vec::new();
cmd.push(0x4D); // LOG SENSE
cmd.push(0);
cmd.push(0x2e); // Tape Alert Flag page
cmd.push(0);
cmd.push(0);
cmd.push(0);
cmd.push(0);
cmd.extend(&[2u8, 0u8]); // alloc len
cmd.push(0u8); // control byte
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("read tape alert flags failed - {}", err))
.map(|v| v.to_vec())
}
fn decode_tape_alert_flags(data: &[u8]) -> Result<TapeAlertFlags, Error> {
proxmox::try_block!({
if !(data[0] == 0x2e && data[1] == 0) {
bail!("invalid response");
}
let mut reader = &data[2..];
let page_len: u16 = unsafe { reader.read_be_value()? };
if page_len != 0x140 {
bail!("invalid page length");
}
let mut value: u64 = 0;
for _ in 1..65 {
let id: u16 = unsafe { reader.read_be_value()? };
if id < 1 || id > 64 {
bail!("invalid parameter id '{}'", id);
}
let bit: u64 = 1 << (id as usize - 1);
let mut data = [0u8;3];
reader.read_exact(&mut data)?;
if data[1] != 1 {
bail!("invalid parameter length");
}
match data[2] {
0 => {},
1 => { value |= bit; }
_ => bail!("invalid flag value"),
}
}
Ok(TapeAlertFlags::from_bits_truncate(value))
}).map_err(|err| format_err!("decode tape alert flags failed - {}", err))
}