tape: add new command line tool "pmtx"
Also improve sgutil2 error reporting
This commit is contained in:
Dietmar Maurer
parent
d43265b7f1
commit
c3747b93c8
446
src/bin/pmtx.rs
Normal file
446
src/bin/pmtx.rs
Normal file
@ -0,0 +1,446 @@
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/// SCSI changer command implemented using scsi-generic raw commands
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///
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/// This is a Rust implementation, meant to replace the 'mtx' command
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/// line tool.
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///
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/// Features:
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///
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/// - written in Rust
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///
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/// - json output
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///
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/// - list serial number for attached drives, so that it is possible
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/// to associate drive numbers with drives.
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use std::fs::File;
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use anyhow::{bail, Error};
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use serde_json::Value;
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use proxmox::{
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api::{
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api,
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cli::*,
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RpcEnvironment,
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},
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};
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use proxmox_backup::{
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tools::sgutils2::{
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scsi_inquiry,
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},
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api2::types::{
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SCSI_CHANGER_PATH_SCHEMA,
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CHANGER_NAME_SCHEMA,
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ScsiTapeChanger,
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LinuxTapeDrive,
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},
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tape::{
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complete_changer_path,
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changer::{
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ElementStatus,
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sg_pt_changer,
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},
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},
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config::{
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self,
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drive::{
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complete_changer_name,
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}
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},
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};
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fn get_changer_handle(param: &Value) -> Result<File, Error> {
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if let Some(name) = param["changer"].as_str() {
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let (config, _digest) = config::drive::config()?;
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let changer_config: ScsiTapeChanger = config.lookup("changer", &name)?;
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eprintln!("using device {}", changer_config.path);
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return sg_pt_changer::open(&changer_config.path);
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}
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if let Some(device) = param["device"].as_str() {
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eprintln!("using device {}", device);
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return sg_pt_changer::open(device);
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}
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if let Ok(name) = std::env::var("PROXMOX_TAPE_DRIVE") {
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let (config, _digest) = config::drive::config()?;
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let drive: LinuxTapeDrive = config.lookup("linux", &name)?;
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if let Some(changer) = drive.changer {
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let changer_config: ScsiTapeChanger = config.lookup("changer", &changer)?;
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eprintln!("using device {}", changer_config.path);
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return sg_pt_changer::open(&changer_config.path);
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}
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}
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if let Ok(device) = std::env::var("CHANGER") {
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eprintln!("using device {}", device);
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return sg_pt_changer::open(device);
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}
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bail!("no changer device specified");
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}
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#[api(
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input: {
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properties: {
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changer: {
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schema: CHANGER_NAME_SCHEMA,
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optional: true,
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},
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device: {
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schema: SCSI_CHANGER_PATH_SCHEMA,
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optional: true,
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},
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"output-format": {
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schema: OUTPUT_FORMAT,
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optional: true,
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},
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},
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},
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)]
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/// Inquiry
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fn inquiry(
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param: Value,
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) -> Result<(), Error> {
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let output_format = get_output_format(¶m);
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let result: Result<_, Error> = proxmox::try_block!({
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let mut file = get_changer_handle(¶m)?;
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let info = scsi_inquiry(&mut file)?;
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Ok(info)
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});
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if output_format == "json-pretty" {
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let result = result.map_err(|err: Error| err.to_string());
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println!("{}", serde_json::to_string_pretty(&result)?);
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return Ok(());
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}
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if output_format == "json" {
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let result = result.map_err(|err: Error| err.to_string());
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println!("{}", serde_json::to_string(&result)?);
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return Ok(());
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}
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if output_format != "text" {
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bail!("unknown output format '{}'", output_format);
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}
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let info = result?;
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println!("Type: {} ({})", info.peripheral_type_text, info.peripheral_type);
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println!("Vendor: {}", info.vendor);
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println!("Product: {}", info.product);
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println!("Revision: {}", info.revision);
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Ok(())
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}
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#[api(
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input: {
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properties: {
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changer: {
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schema: CHANGER_NAME_SCHEMA,
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optional: true,
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},
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device: {
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schema: SCSI_CHANGER_PATH_SCHEMA,
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optional: true,
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},
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},
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},
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)]
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/// Inventory
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fn inventory(
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param: Value,
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) -> Result<(), Error> {
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let mut file = get_changer_handle(¶m)?;
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sg_pt_changer::initialize_element_status(&mut file)?;
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Ok(())
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}
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#[api(
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input: {
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properties: {
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changer: {
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schema: CHANGER_NAME_SCHEMA,
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optional: true,
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},
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device: {
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schema: SCSI_CHANGER_PATH_SCHEMA,
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optional: true,
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},
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slot: {
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description: "Storage slot number (source).",
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type: u64,
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},
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drivenum: {
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description: "Target drive number (defaults to Drive 0)",
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type: u64,
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optional: true,
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},
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},
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},
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)]
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/// Load
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fn load(
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param: Value,
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slot: u64,
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drivenum: Option<u64>,
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) -> Result<(), Error> {
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let mut file = get_changer_handle(¶m)?;
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let drivenum = drivenum.unwrap_or(0);
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sg_pt_changer::load_slot(&mut file, slot, drivenum)?;
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Ok(())
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}
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#[api(
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input: {
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properties: {
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changer: {
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schema: CHANGER_NAME_SCHEMA,
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optional: true,
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},
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device: {
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schema: SCSI_CHANGER_PATH_SCHEMA,
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optional: true,
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},
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slot: {
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description: "Storage slot number (target). If omitted, defaults to the slot that the drive was loaded from.",
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type: u64,
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optional: true,
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},
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drivenum: {
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description: "Target drive number (defaults to Drive 0)",
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type: u64,
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optional: true,
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},
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},
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},
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)]
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/// Unload
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fn unload(
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param: Value,
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slot: Option<u64>,
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drivenum: Option<u64>,
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) -> Result<(), Error> {
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let mut file = get_changer_handle(¶m)?;
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let drivenum = drivenum.unwrap_or(0);
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if let Some(to_slot) = slot {
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sg_pt_changer::unload(&mut file, to_slot, drivenum)?;
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return Ok(());
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}
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let status = sg_pt_changer::read_element_status(&mut file)?;
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if let Some(info) = status.drives.get(drivenum as usize) {
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if let ElementStatus::Empty = info.status {
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bail!("Drive {} is empty.", drivenum);
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}
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if let Some(to_slot) = info.loaded_slot {
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// check if original slot is empty/usable
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if let Some(slot_info) = status.slots.get(to_slot as usize - 1) {
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if let ElementStatus::Empty = slot_info.status {
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sg_pt_changer::unload(&mut file, to_slot, drivenum)?;
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return Ok(());
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}
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}
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}
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if let Some(to_slot) = status.find_free_slot(false) {
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sg_pt_changer::unload(&mut file, to_slot, drivenum)?;
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return Ok(());
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} else {
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bail!("Drive '{}' unload failure - no free slot", drivenum);
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}
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} else {
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bail!("Drive {} does not exist.", drivenum);
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}
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}
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#[api(
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input: {
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properties: {
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changer: {
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schema: CHANGER_NAME_SCHEMA,
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optional: true,
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},
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device: {
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schema: SCSI_CHANGER_PATH_SCHEMA,
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optional: true,
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},
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"output-format": {
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schema: OUTPUT_FORMAT,
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optional: true,
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},
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},
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},
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)]
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/// Changer Status
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fn status(
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param: Value,
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) -> Result<(), Error> {
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let output_format = get_output_format(¶m);
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let result: Result<_, Error> = proxmox::try_block!({
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let mut file = get_changer_handle(¶m)?;
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let status = sg_pt_changer::read_element_status(&mut file)?;
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Ok(status)
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});
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if output_format == "json-pretty" {
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let result = result.map_err(|err: Error| err.to_string());
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println!("{}", serde_json::to_string_pretty(&result)?);
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return Ok(());
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}
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if output_format == "json" {
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let result = result.map_err(|err: Error| err.to_string());
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println!("{}", serde_json::to_string(&result)?);
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return Ok(());
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}
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if output_format != "text" {
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bail!("unknown output format '{}'", output_format);
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}
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let status = result?;
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for (i, transport) in status.transports.iter().enumerate() {
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println!("Transport Element (Griper) {:>3}: {:?}",i, transport.status);
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}
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for (i, drive) in status.drives.iter().enumerate() {
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let loaded_txt = match drive.loaded_slot {
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Some(slot) => format!(", Source: {}", slot),
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None => String::new(),
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};
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let serial_txt = match drive.drive_serial_number {
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Some(ref serial) => format!(", Serial: {}", serial),
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None => String::new(),
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};
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println!(
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"Data Transfer Element (Drive) {:>3}: {:?}{}{}",
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i, drive.status, loaded_txt, serial_txt,
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);
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}
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for (i, slot) in status.slots.iter().enumerate() {
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if slot.import_export {
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println!(" Import/Export {:>3}: {:?}", i+1, slot.status);
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} else {
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println!(" Storage Element {:>3}: {:?}", i+1, slot.status);
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}
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}
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Ok(())
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}
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#[api(
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input: {
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properties: {
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changer: {
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schema: CHANGER_NAME_SCHEMA,
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optional: true,
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},
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device: {
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schema: SCSI_CHANGER_PATH_SCHEMA,
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optional: true,
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},
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from: {
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description: "Source storage slot number.",
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type: u64,
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},
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to: {
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description: "Target storage slot number.",
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type: u64,
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},
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},
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},
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)]
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/// Transfer
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fn transfer(
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param: Value,
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from: u64,
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to: u64,
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) -> Result<(), Error> {
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let mut file = get_changer_handle(¶m)?;
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sg_pt_changer::transfer_medium(&mut file, from, to)?;
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Ok(())
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}
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fn main() -> Result<(), Error> {
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let uid = nix::unistd::Uid::current();
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let username = match nix::unistd::User::from_uid(uid)? {
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Some(user) => user.name,
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None => bail!("unable to get user name"),
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};
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let cmd_def = CliCommandMap::new()
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.insert(
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"inquiry",
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CliCommand::new(&API_METHOD_INQUIRY)
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.completion_cb("changer", complete_changer_name)
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.completion_cb("device", complete_changer_path)
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)
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.insert(
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"inventory",
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CliCommand::new(&API_METHOD_INVENTORY)
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.completion_cb("changer", complete_changer_name)
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.completion_cb("device", complete_changer_path)
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)
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.insert(
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"load",
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CliCommand::new(&API_METHOD_LOAD)
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.arg_param(&["slot"])
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.completion_cb("changer", complete_changer_name)
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.completion_cb("device", complete_changer_path)
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)
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.insert(
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"unload",
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CliCommand::new(&API_METHOD_UNLOAD)
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.completion_cb("changer", complete_changer_name)
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.completion_cb("device", complete_changer_path)
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)
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.insert(
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"status",
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CliCommand::new(&API_METHOD_STATUS)
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.completion_cb("changer", complete_changer_name)
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.completion_cb("device", complete_changer_path)
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)
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.insert(
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"transfer",
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CliCommand::new(&API_METHOD_TRANSFER)
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.arg_param(&["from", "to"])
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.completion_cb("changer", complete_changer_name)
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.completion_cb("device", complete_changer_path)
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)
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;
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let mut rpcenv = CliEnvironment::new();
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rpcenv.set_auth_id(Some(format!("{}@pam", username)));
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run_cli_command(cmd_def, rpcenv, None);
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Ok(())
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}
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@ -11,6 +11,7 @@ mod online_status_map;
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pub use online_status_map::*;
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use anyhow::{bail, Error};
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use serde::{Serialize, Deserialize};
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use crate::api2::types::{
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ScsiTapeChanger,
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@ -21,6 +22,7 @@ use crate::api2::types::{
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///
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/// Drive and slots may be `Empty`, or contain some media, either
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/// with knwon volume tag `VolumeTag(String)`, or without (`Full`).
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#[derive(Serialize, Deserialize, Debug)]
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pub enum ElementStatus {
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Empty,
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Full,
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@ -28,6 +30,7 @@ pub enum ElementStatus {
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}
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/// Changer drive status.
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#[derive(Serialize, Deserialize)]
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pub struct DriveStatus {
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/// The slot the element was loaded from (if known).
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pub loaded_slot: Option<u64>,
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@ -40,6 +43,7 @@ pub struct DriveStatus {
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}
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/// Storage element status.
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#[derive(Serialize, Deserialize)]
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pub struct StorageElementStatus {
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/// Flag for Import/Export slots
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pub import_export: bool,
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@ -50,6 +54,7 @@ pub struct StorageElementStatus {
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}
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/// Transport element status.
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#[derive(Serialize, Deserialize)]
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pub struct TransportElementStatus {
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/// The status.
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pub status: ElementStatus,
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@ -58,6 +63,7 @@ pub struct TransportElementStatus {
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}
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/// Changer status - show drive/slot usage
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#[derive(Serialize, Deserialize)]
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pub struct MtxStatus {
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/// List of known drives
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pub drives: Vec<DriveStatus>,
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@ -100,6 +106,20 @@ impl MtxStatus {
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.map(|t| t.element_address)
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.unwrap_or(0u16)
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}
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pub fn find_free_slot(&self, import_export: bool) -> Option<u64> {
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let mut free_slot = None;
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for (i, slot_info) in self.slots.iter().enumerate() {
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if slot_info.import_export != import_export {
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continue; // skip slots of wrong type
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}
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if let ElementStatus::Empty = slot_info.status {
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free_slot = Some((i+1) as u64);
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break;
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}
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}
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free_slot
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}
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}
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/// Interface to SCSI changer devices
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@ -333,15 +353,7 @@ pub trait MediaChange {
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}
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}
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let mut free_slot = None;
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for i in 0..status.slots.len() {
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if status.slots[i].import_export { continue; } // skip import/export slots
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if let ElementStatus::Empty = status.slots[i].status {
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free_slot = Some((i+1) as u64);
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break;
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}
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}
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if let Some(slot) = free_slot {
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if let Some(slot) = status.find_free_slot(false) {
|
||||
self.unload_media(Some(slot))
|
||||
} else {
|
||||
bail!("drive '{}' unload failure - no free slot", self.drive_name());
|
||||
|
||||
@ -9,10 +9,152 @@ use std::ptr::NonNull;
|
||||
|
||||
use anyhow::{bail, format_err, Error};
|
||||
use endian_trait::Endian;
|
||||
use serde::{Deserialize, Serialize};
|
||||
use libc::{c_char, c_int};
|
||||
|
||||
use proxmox::tools::io::ReadExt;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct SenseInfo {
|
||||
pub sense_key: u8,
|
||||
pub asc: u8,
|
||||
pub ascq: u8,
|
||||
}
|
||||
|
||||
impl ToString for SenseInfo {
|
||||
|
||||
fn to_string(&self) -> String {
|
||||
|
||||
// Added codes from IBM TS4300 Tape Library SCSI reference manual
|
||||
// Added codes from Quantum Intelligent Libraries SCSI Reference Guide
|
||||
match (self.sense_key, self.asc, self.ascq) {
|
||||
// Not Ready
|
||||
(0x02, 0x04, 0x00) => String::from("Not ready, cause not reportable"),
|
||||
(0x02, 0x04, 0x01) => String::from("Not ready, operation in progress"),
|
||||
(0x02, 0x04, 0x03) => String::from("Not ready, manual intervention required"),
|
||||
(0x02, 0x04, 0x12) => String::from("Not ready, offline"),
|
||||
(0x02, 0x04, 0x83) => String::from("The library is not ready due to aisle power being disabled"),
|
||||
(0x02, 0x04, 0x8D) => String::from(" The library is not ready because it is offline"),
|
||||
(0x02, 0x3B, 0x12) => String::from("Not ready, magazine removed"),
|
||||
// Media Error
|
||||
(0x03, 0x30, 0x00) => String::from("Media error"),
|
||||
(0x03, 0x30, 0x07) => String::from("Cleaning failure"),
|
||||
// Hardware Error
|
||||
(0x04, 0x15, 0x01) => String::from("A mechanical positioning error occurred"),
|
||||
(0x04, 0x3B, 0x0D) => String::from("Medium destination element full"),
|
||||
(0x04, 0x3B, 0x0E) => String::from("Medium source element empty"),
|
||||
(0x04, 0x3F, 0x0F) => String::from("Echo buffer overwritten"),
|
||||
(0x04, 0x40, 0x80) => String::from("Component failure"),
|
||||
(0x04, 0x44, 0x00) => String::from("Firmware detected an internal logic failure"),
|
||||
(0x04, 0x53, 0x00) => String::from("A drive did not load or unload a tape"),
|
||||
(0x04, 0x53, 0x01) => String::from("A drive did not unload a cartridge"),
|
||||
(0x04, 0x53, 0x82) => String::from("Cannot lock the I/E station"),
|
||||
(0x04, 0x53, 0x83) => String::from("Cannot unlock the I/E station"),
|
||||
(0x04, 0x80, 0xD7) => String::from("Internal software error"),
|
||||
(0x04, 0x80, 0xD8) => String::from("Database access error"),
|
||||
(0x04, 0x81, 0xB0) => String::from("Internal system communication failed"),
|
||||
(0x04, 0x81, 0xB2) => String::from("Robotic controller communication failed"),
|
||||
(0x04, 0x81, 0xB3) => String::from("Mechanical positioning error"),
|
||||
(0x04, 0x81, 0xB4) => String::from("Cartridge did not transport completely."),
|
||||
(0x04, 0x82, 0xFC) => String::from("Drive configuration failed"),
|
||||
(0x04, 0x83, 0x00) => String::from("Label too short or too long"),
|
||||
// Illegal Request
|
||||
(0x05, 0x04, 0x83) => String::from("Door open"),
|
||||
(0x05, 0x1A, 0x00) => String::from("Parameter length error"),
|
||||
(0x05, 0x20, 0x00) => String::from("Invalid command operation code"),
|
||||
(0x05, 0x21, 0x01) => String::from("Invalid element address"),
|
||||
(0x05, 0x24, 0x00) => String::from("Invalid field CDB"),
|
||||
(0x05, 0x25, 0x00) => String::from("Invalid LUN"),
|
||||
(0x05, 0x26, 0x00) => String::from("Invalid field in parameter list"),
|
||||
(0x05, 0x26, 0x01) => String::from("Parameter list error: parameter not supported"),
|
||||
(0x05, 0x26, 0x02) => String::from("Parameter value invalid"),
|
||||
(0x05, 0x26, 0x04) => String::from("Invalid release of persistent reservation"),
|
||||
(0x05, 0x2C, 0x00) => String::from("Saving parameters is not supported"),
|
||||
(0x05, 0x30, 0x00) => String::from("Incompatible medium installed"),
|
||||
(0x05, 0x30, 0x12) => String::from("Incompatible Media loaded to drive"),
|
||||
(0x05, 0x39, 0x00) => String::from("Saving parameters is not supported"),
|
||||
(0x05, 0x3B, 0x0D) => String::from("Medium destination element full"),
|
||||
(0x05, 0x3B, 0x0E) => String::from("Medium source element empty"),
|
||||
(0x05, 0x3B, 0x11) => String::from("Magazine not accessible"),
|
||||
(0x05, 0x3B, 0x12) => String::from("Magazine not installed"),
|
||||
(0x05, 0x3B, 0x18) => String::from("Element disabled"),
|
||||
(0x05, 0x3B, 0x1A) => String::from("Data transfer element removed"),
|
||||
(0x05, 0x3B, 0xA0) => String::from("Media type does not match destination media type"),
|
||||
(0x05, 0x3F, 0x01) => String::from("New firmware loaded"),
|
||||
(0x05, 0x3F, 0x03) => String::from("Inquiry data changed"),
|
||||
(0x05, 0x44, 0x81) => String::from("Source element not ready"),
|
||||
(0x05, 0x44, 0x82) => String::from("Destination element not ready"),
|
||||
(0x05, 0x53, 0x02) => String::from("Library media removal prevented state set."),
|
||||
(0x05, 0x53, 0x03) => String::from("Drive media removal prevented state set"),
|
||||
(0x05, 0x53, 0x81) => String::from("Insert/Eject station door is open"),
|
||||
(0x05, 0x82, 0x93) => String::from("Failure session sequence error"),
|
||||
(0x05, 0x82, 0x94) => String::from("Failover command sequence error"),
|
||||
(0x05, 0x82, 0x95) => String::from("Duplicate failover session key"),
|
||||
(0x05, 0x82, 0x96) => String::from("Invalid failover key"),
|
||||
(0x05, 0x82, 0x97) => String::from("Failover session that is released"),
|
||||
(0x05, 0x83, 0x02) => String::from("Barcode label questionable"),
|
||||
(0x05, 0x83, 0x03) => String::from("Cell status and barcode label questionable"),
|
||||
(0x05, 0x83, 0x04) => String::from("Data transfer element not installed"),
|
||||
(0x05, 0x83, 0x05) => String::from("Data transfer element is varied off and not accessible for library operations"),
|
||||
(0x05, 0x83, 0x06) => String::from("Element is contained within an offline tower or I/E station and is not accessible for library operations"),
|
||||
// Unit Attention
|
||||
(0x06, 0x28, 0x00) => String::from("Not ready to change, medium changed"),
|
||||
(0x06, 0x28, 0x01) => String::from("Import/export element that is accessed"),
|
||||
(0x06, 0x29, 0x00) => String::from("Power-on or reset occurred"),
|
||||
(0x06, 0x29, 0x01) => String::from("Power on occurred"),
|
||||
(0x06, 0x29, 0x02) => String::from("SCSI Bus reset occurred"),
|
||||
(0x06, 0x29, 0x03) => String::from("Device reset occurred"),
|
||||
(0x06, 0x29, 0x04) => String::from("Internal reset occurred"),
|
||||
(0x06, 0x2A, 0x01) => String::from("Mode parameters have been changed"),
|
||||
(0x06, 0x2A, 0x03) => String::from("Reservations preempted"),
|
||||
(0x06, 0x2A, 0x04) => String::from("Reservations released"),
|
||||
(0x06, 0x2A, 0x05) => String::from("Registrations preempted"),
|
||||
// Aborted Command
|
||||
(0x0B, 0x3F, 0x0F) => String::from("ECHO buffer overwritten"),
|
||||
(0x0B, 0x44, 0x00) => String::from("Firmware detected an internal logic failure"),
|
||||
(0x0B, 0x45, 0x00) => String::from("Select or reselect failure"),
|
||||
(0x0B, 0x47, 0x00) => String::from("SCSI parity error"),
|
||||
(0x0B, 0x48, 0x00) => String::from("Initiator detected error message received"),
|
||||
(0x0B, 0x49, 0x00) => String::from("Invalid message error"),
|
||||
(0x0B, 0x4A, 0x00) => String::from("Command phase error"),
|
||||
(0x0B, 0x4B, 0x00) => String::from("Data phase error"),
|
||||
(0x0B, 0x4E, 0x00) => String::from("Overlapped command attempt"),
|
||||
// Else, simply report values
|
||||
_ => format!("sense_key = 0x{:02x}, ASC = 0x{:02x}, ASCQ = 0x{:02x}", self.sense_key, self.asc, self.ascq),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct ScsiError {
|
||||
pub error: Error,
|
||||
pub sense: Option<SenseInfo>,
|
||||
}
|
||||
|
||||
impl std::fmt::Display for ScsiError {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
write!(f, "{}", self.error)
|
||||
}
|
||||
}
|
||||
|
||||
impl std::error::Error for ScsiError {
|
||||
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
|
||||
self.error.source()
|
||||
}
|
||||
}
|
||||
|
||||
impl From<anyhow::Error> for ScsiError {
|
||||
fn from(error: anyhow::Error) -> Self {
|
||||
Self { error, sense: None }
|
||||
}
|
||||
}
|
||||
|
||||
impl From<std::io::Error> for ScsiError {
|
||||
fn from(error: std::io::Error) -> Self {
|
||||
Self { error: error.into(), sense: None }
|
||||
}
|
||||
}
|
||||
|
||||
// Opaque wrapper for sg_pt_base
|
||||
#[repr(C)]
|
||||
struct SgPtBase { _private: [u8; 0] }
|
||||
@ -83,6 +225,22 @@ pub const PERIPHERAL_DEVICE_TYPE_TEXT: [&'static str; 32] = [
|
||||
"Unknown",
|
||||
];
|
||||
|
||||
// SENSE KEYS
|
||||
pub const SENSE_KEY_NO_SENSE: u8 = 0x00;
|
||||
pub const SENSE_KEY_RECOVERED_ERROR: u8 = 0x01;
|
||||
pub const SENSE_KEY_NOT_READY: u8 = 0x02;
|
||||
pub const SENSE_KEY_MEDIUM_ERROR: u8 = 0x03;
|
||||
pub const SENSE_KEY_HARDWARE_ERROR: u8 = 0x04;
|
||||
pub const SENSE_KEY_ILLEGAL_REQUEST: u8 = 0x05;
|
||||
pub const SENSE_KEY_UNIT_ATTENTION: u8 = 0x06;
|
||||
pub const SENSE_KEY_DATA_PROTECT: u8 = 0x07;
|
||||
pub const SENSE_KEY_BLANK_CHECK: u8 = 0x08;
|
||||
pub const SENSE_KEY_COPY_ABORTED: u8 = 0x0a;
|
||||
pub const SENSE_KEY_ABORTED_COMMAND: u8 = 0x0b;
|
||||
pub const SENSE_KEY_VOLUME_OVERFLOW: u8 = 0x0d;
|
||||
pub const SENSE_KEY_MISCOMPARE: u8 = 0x0e;
|
||||
|
||||
|
||||
#[repr(C, packed)]
|
||||
#[derive(Endian)]
|
||||
struct InquiryPage {
|
||||
@ -100,8 +258,23 @@ struct InquiryPage {
|
||||
// additional data follows, but we do not need that
|
||||
}
|
||||
|
||||
#[repr(C, packed)]
|
||||
#[derive(Endian, Debug)]
|
||||
struct RequestSensePage {
|
||||
response_code: u8,
|
||||
obsolete: u8,
|
||||
flags2: u8,
|
||||
information: [u8;4],
|
||||
additional_sense_len: u8,
|
||||
command_specific_information: [u8;4],
|
||||
additional_sense_code: u8,
|
||||
additional_sense_code_qualifier: u8,
|
||||
field_replacable_unit_code: u8,
|
||||
sense_key_specific: [u8; 3],
|
||||
}
|
||||
|
||||
/// Inquiry result
|
||||
#[derive(Debug)]
|
||||
#[derive(Serialize, Deserialize, Debug)]
|
||||
pub struct InquiryInfo {
|
||||
/// Peripheral device type (0-31)
|
||||
pub peripheral_type: u8,
|
||||
@ -115,6 +288,10 @@ pub struct InquiryInfo {
|
||||
pub revision: String,
|
||||
}
|
||||
|
||||
pub const SCSI_PT_DO_START_OK:c_int = 0;
|
||||
pub const SCSI_PT_DO_BAD_PARAMS:c_int = 1;
|
||||
pub const SCSI_PT_DO_TIMEOUT:c_int = 2;
|
||||
|
||||
pub const SCSI_PT_RESULT_GOOD:c_int = 0;
|
||||
pub const SCSI_PT_RESULT_STATUS:c_int = 1;
|
||||
pub const SCSI_PT_RESULT_SENSE:c_int = 2;
|
||||
@ -176,8 +353,9 @@ extern "C" {
|
||||
|
||||
fn get_scsi_pt_status_response(objp: *const SgPtBase) -> c_int;
|
||||
|
||||
#[allow(dead_code)]
|
||||
fn get_scsi_pt_result_category(objp: *const SgPtBase) -> c_int;
|
||||
|
||||
fn get_scsi_pt_os_err(objp: *const SgPtBase) -> c_int;
|
||||
}
|
||||
|
||||
/// Safe interface to run RAW SCSI commands
|
||||
@ -258,15 +436,88 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
|
||||
Ok(ptvp)
|
||||
}
|
||||
|
||||
fn do_scsi_pt_checked(&mut self, ptvp: &mut SgPt) -> Result<(), ScsiError> {
|
||||
|
||||
let res = unsafe { do_scsi_pt(ptvp.as_mut_ptr(), self.file.as_raw_fd(), self.timeout, 0) };
|
||||
match res {
|
||||
SCSI_PT_DO_START_OK => { /* Ok */ },
|
||||
SCSI_PT_DO_BAD_PARAMS => return Err(format_err!("do_scsi_pt failed - bad pass through setup").into()),
|
||||
SCSI_PT_DO_TIMEOUT => return Err(format_err!("do_scsi_pt failed - timeout").into()),
|
||||
code if code < 0 => {
|
||||
let errno = unsafe { get_scsi_pt_os_err(ptvp.as_ptr()) };
|
||||
let err = nix::Error::from_errno(nix::errno::Errno::from_i32(errno));
|
||||
return Err(format_err!("do_scsi_pt failed with err {}", err).into());
|
||||
}
|
||||
unknown => return Err(format_err!("do_scsi_pt failed: unknown error {}", unknown).into()),
|
||||
}
|
||||
|
||||
if res < 0 {
|
||||
let err = nix::Error::last();
|
||||
return Err(format_err!("do_scsi_pt failed - {}", err).into());
|
||||
}
|
||||
if res != 0 {
|
||||
return Err(format_err!("do_scsi_pt failed {}", res).into());
|
||||
}
|
||||
|
||||
let sense_len = unsafe { get_scsi_pt_sense_len(ptvp.as_ptr()) };
|
||||
|
||||
let res_cat = unsafe { get_scsi_pt_result_category(ptvp.as_ptr()) };
|
||||
match res_cat {
|
||||
SCSI_PT_RESULT_GOOD => { /* Ok */ }
|
||||
SCSI_PT_RESULT_STATUS => { /* test below */ }
|
||||
SCSI_PT_RESULT_SENSE => {
|
||||
if sense_len == 0 {
|
||||
return Err(format_err!("scsi command failed: no Sense").into());
|
||||
}
|
||||
let mut reader = &self.sense_buffer[..(sense_len as usize)];
|
||||
|
||||
let sense: RequestSensePage = unsafe { reader.read_be_value()? };
|
||||
|
||||
let code = sense.response_code & 0x7f;
|
||||
if code == 0x71 {
|
||||
return Err(format_err!("scsi command failed: received deferred Sense").into());
|
||||
}
|
||||
if code != 0x70 {
|
||||
return Err(format_err!("scsi command failed: invalid Sense response code {:x}", code).into());
|
||||
}
|
||||
|
||||
let sense = SenseInfo {
|
||||
sense_key: sense.flags2 & 0xf,
|
||||
asc: sense.additional_sense_code,
|
||||
ascq: sense.additional_sense_code_qualifier,
|
||||
};
|
||||
|
||||
return Err(ScsiError {
|
||||
error: format_err!("scsi command failed: {}", sense.to_string()),
|
||||
sense: Some(sense),
|
||||
});
|
||||
}
|
||||
SCSI_PT_RESULT_TRANSPORT_ERR => return Err(format_err!("scsi command failed: transport error").into()),
|
||||
SCSI_PT_RESULT_OS_ERR => {
|
||||
let errno = unsafe { get_scsi_pt_os_err(ptvp.as_ptr()) };
|
||||
let err = nix::Error::from_errno(nix::errno::Errno::from_i32(errno));
|
||||
return Err(format_err!("scsi command failed with err {}", err).into());
|
||||
}
|
||||
unknown => return Err(format_err!("scsi command failed: unknown result category {}", unknown).into()),
|
||||
}
|
||||
|
||||
let status = unsafe { get_scsi_pt_status_response(ptvp.as_ptr()) };
|
||||
if status != 0 {
|
||||
return Err(format_err!("unknown scsi error - status response {}", status).into());
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Run the specified RAW SCSI command
|
||||
pub fn do_command(&mut self, cmd: &[u8]) -> Result<&[u8], Error> {
|
||||
pub fn do_command(&mut self, cmd: &[u8]) -> Result<&[u8], ScsiError> {
|
||||
|
||||
if !unsafe { sg_is_scsi_cdb(cmd.as_ptr(), cmd.len() as c_int) } {
|
||||
bail!("no valid SCSI command");
|
||||
return Err(format_err!("no valid SCSI command").into());
|
||||
}
|
||||
|
||||
if self.buffer.len() < 16 {
|
||||
bail!("output buffer too small");
|
||||
return Err(format_err!("output buffer too small").into());
|
||||
}
|
||||
|
||||
let mut ptvp = self.create_scsi_pt_obj()?;
|
||||
@ -279,27 +530,11 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
|
||||
)
|
||||
};
|
||||
|
||||
let res = unsafe { do_scsi_pt(ptvp.as_mut_ptr(), self.file.as_raw_fd(), self.timeout, 0) };
|
||||
if res < 0 {
|
||||
let err = nix::Error::last();
|
||||
bail!("do_scsi_pt failed - {}", err);
|
||||
}
|
||||
if res != 0 {
|
||||
bail!("do_scsi_pt failed {}", res);
|
||||
}
|
||||
|
||||
// todo: what about sense data?
|
||||
let _sense_len = unsafe { get_scsi_pt_sense_len(ptvp.as_ptr()) };
|
||||
|
||||
let status = unsafe { get_scsi_pt_status_response(ptvp.as_ptr()) };
|
||||
if status != 0 {
|
||||
// toto: improve error reporting
|
||||
bail!("unknown scsi error - status response {}", status);
|
||||
}
|
||||
self.do_scsi_pt_checked(&mut ptvp)?;
|
||||
|
||||
let resid = unsafe { get_scsi_pt_resid(ptvp.as_ptr()) } as usize;
|
||||
if resid > self.buffer.len() {
|
||||
bail!("do_scsi_pt failed - got strange resid (value too big)");
|
||||
return Err(format_err!("do_scsi_pt failed - got strange resid (value too big)").into());
|
||||
}
|
||||
let data_len = self.buffer.len() - resid;
|
||||
|
||||
@ -334,25 +569,9 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
|
||||
cmd.as_ptr(),
|
||||
cmd.len() as c_int,
|
||||
);
|
||||
};
|
||||
};
|
||||
|
||||
let res = unsafe { do_scsi_pt(ptvp.as_mut_ptr(), self.file.as_raw_fd(), self.timeout, 0) };
|
||||
if res < 0 {
|
||||
let err = nix::Error::last();
|
||||
bail!("do_scsi_pt failed - {}", err);
|
||||
}
|
||||
if res != 0 {
|
||||
bail!("do_scsi_pt failed {}", res);
|
||||
}
|
||||
|
||||
// todo: what about sense data?
|
||||
let _sense_len = unsafe { get_scsi_pt_sense_len(ptvp.as_ptr()) };
|
||||
|
||||
let status = unsafe { get_scsi_pt_status_response(ptvp.as_ptr()) };
|
||||
if status != 0 {
|
||||
// toto: improve error reporting
|
||||
bail!("unknown scsi error - status response {}", status);
|
||||
}
|
||||
self.do_scsi_pt_checked(&mut ptvp)?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user