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pbs tape: rust fmt 

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2022-04-06 17:00:29 +02:00
parent a527b54f84
commit b23adfd4ee
17 changed files with 863 additions and 811 deletions
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75
pbs-tape/src/bin/pmt.rs
View File

@ -12,46 +12,39 @@
/// - support tape alert flags
/// - support volume statistics
/// - read cartridge memory
use std::convert::TryInto;
use anyhow::{bail, Error};
use serde_json::Value;
use proxmox_schema::{api, ArraySchema, IntegerSchema, Schema, StringSchema};
use proxmox_router::cli::*;
use proxmox_router::RpcEnvironment;
use proxmox_schema::{api, ArraySchema, IntegerSchema, Schema, StringSchema};
use pbs_api_types::{
LTO_DRIVE_PATH_SCHEMA, DRIVE_NAME_SCHEMA, LtoTapeDrive,
};
use pbs_api_types::{LtoTapeDrive, DRIVE_NAME_SCHEMA, LTO_DRIVE_PATH_SCHEMA};
use pbs_config::drive::complete_drive_name;
use pbs_tape::{
sg_tape::SgTape,
linux_list_drives::{complete_drive_path, lto_tape_device_list, open_lto_tape_device},
sg_tape::SgTape,
};
pub const FILE_MARK_COUNT_SCHEMA: Schema =
IntegerSchema::new("File mark count.")
pub const FILE_MARK_COUNT_SCHEMA: Schema = IntegerSchema::new("File mark count.")
.minimum(1)
.maximum(i32::MAX as isize)
.schema();
pub const FILE_MARK_POSITION_SCHEMA: Schema =
IntegerSchema::new("File mark position (0 is BOT).")
pub const FILE_MARK_POSITION_SCHEMA: Schema = IntegerSchema::new("File mark position (0 is BOT).")
.minimum(0)
.maximum(i32::MAX as isize)
.schema();
pub const RECORD_COUNT_SCHEMA: Schema =
IntegerSchema::new("Record count.")
pub const RECORD_COUNT_SCHEMA: Schema = IntegerSchema::new("Record count.")
.minimum(1)
.maximum(i32::MAX as isize)
.schema();
pub const DRIVE_OPTION_SCHEMA: Schema = StringSchema::new(
"Lto Tape Driver Option, either numeric value or option name.")
.schema();
pub const DRIVE_OPTION_SCHEMA: Schema =
StringSchema::new("Lto Tape Driver Option, either numeric value or option name.").schema();
pub const DRIVE_OPTION_LIST_SCHEMA: Schema =
ArraySchema::new("Drive Option List.", &DRIVE_OPTION_SCHEMA)
@ -59,7 +52,6 @@ pub const DRIVE_OPTION_LIST_SCHEMA: Schema =
.schema();
fn get_tape_handle(param: &Value) -> Result<SgTape, Error> {
if let Some(name) = param["drive"].as_str() {
let (config, _digest) = pbs_config::drive::config()?;
let drive: LtoTapeDrive = config.lookup("lto", name)?;
@ -88,7 +80,9 @@ fn get_tape_handle(param: &Value) -> Result<SgTape, Error> {
let mut drive_names = Vec::new();
for (name, (section_type, _)) in config.sections.iter() {
if section_type != "lto" { continue; }
if section_type != "lto" {
continue;
}
drive_names.push(name);
}
@ -122,7 +116,6 @@ fn get_tape_handle(param: &Value) -> Result<SgTape, Error> {
/// Position the tape at the beginning of the count file (after
/// filemark count)
fn asf(count: u64, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.locate_file(count)?;
@ -130,7 +123,6 @@ fn asf(count: u64, param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -152,7 +144,6 @@ fn asf(count: u64, param: Value) -> Result<(), Error> {
///
/// The tape is positioned on the last block of the previous file.
fn bsf(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.space_filemarks(-count.try_into()?)?;
@ -160,7 +151,6 @@ fn bsf(count: usize, param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -183,7 +173,6 @@ fn bsf(count: usize, param: Value) -> Result<(), Error> {
/// This leaves the tape positioned at the first block of the file
/// that is count - 1 files before the current file.
fn bsfm(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.space_filemarks(-count.try_into()?)?;
@ -192,7 +181,6 @@ fn bsfm(count: usize, param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -212,7 +200,6 @@ fn bsfm(count: usize, param: Value) -> Result<(), Error> {
)]
/// Backward space records.
fn bsr(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.space_blocks(-count.try_into()?)?;
@ -220,7 +207,6 @@ fn bsr(count: usize, param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -241,7 +227,6 @@ fn bsr(count: usize, param: Value) -> Result<(), Error> {
)]
/// Read Cartridge Memory
fn cartridge_memory(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let mut handle = get_tape_handle(&param)?;
@ -292,11 +277,11 @@ fn cartridge_memory(param: Value) -> Result<(), Error> {
)]
/// Read Tape Alert Flags
fn tape_alert_flags(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let mut handle = get_tape_handle(&param)?;
let result = handle.tape_alert_flags()
let result = handle
.tape_alert_flags()
.map(|flags| format!("{:?}", flags));
if output_format == "json-pretty" {
@ -337,14 +322,12 @@ fn tape_alert_flags(param: Value) -> Result<(), Error> {
)]
/// Eject drive media
fn eject(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.eject()?;
Ok(())
}
#[api(
input: {
properties: {
@ -361,14 +344,12 @@ fn eject(param: Value) -> Result<(), Error> {
)]
/// Move to end of media
fn eod(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.move_to_eom(false)?;
Ok(())
}
#[api(
input: {
properties: {
@ -391,7 +372,6 @@ fn eod(param: Value) -> Result<(), Error> {
)]
/// Erase media (from current position)
fn erase(fast: Option<bool>, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.erase_media(fast.unwrap_or(true))?;
@ -420,7 +400,6 @@ fn erase(fast: Option<bool>, param: Value) -> Result<(), Error> {
)]
/// Format media, single partition
fn format(fast: Option<bool>, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.format_media(fast.unwrap_or(true))?;
@ -448,7 +427,6 @@ fn format(fast: Option<bool>, param: Value) -> Result<(), Error> {
///
/// The tape is positioned on the first block of the next file.
fn fsf(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.space_filemarks(count.try_into()?)?;
@ -478,7 +456,6 @@ fn fsf(count: usize, param: Value) -> Result<(), Error> {
/// This leaves the tape positioned at the last block of the file that
/// is count - 1 files past the current file.
fn fsfm(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.space_filemarks(count.try_into()?)?;
@ -487,7 +464,6 @@ fn fsfm(count: usize, param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -507,7 +483,6 @@ fn fsfm(count: usize, param: Value) -> Result<(), Error> {
)]
/// Forward space records.
fn fsr(count: usize, param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.space_blocks(count.try_into()?)?;
@ -515,7 +490,6 @@ fn fsr(count: usize, param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -532,14 +506,12 @@ fn fsr(count: usize, param: Value) -> Result<(), Error> {
)]
/// Load media
fn load(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.load()?;
Ok(())
}
#[api(
input: {
properties: {
@ -556,7 +528,6 @@ fn load(param: Value) -> Result<(), Error> {
)]
/// Lock the tape drive door
fn lock(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.set_medium_removal(false)?;
@ -564,7 +535,6 @@ fn lock(param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -581,14 +551,12 @@ fn lock(param: Value) -> Result<(), Error> {
)]
/// Rewind the tape
fn rewind(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.rewind()?;
Ok(())
}
#[api(
input: {
properties: {
@ -601,7 +569,6 @@ fn rewind(param: Value) -> Result<(), Error> {
)]
/// Scan for existing tape changer devices
fn scan(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let list = lto_tape_device_list();
@ -621,7 +588,10 @@ fn scan(param: Value) -> Result<(), Error> {
}
for item in list.iter() {
println!("{} ({}/{}/{})", item.path, item.vendor, item.model, item.serial);
println!(
"{} ({}/{}/{})",
item.path, item.vendor, item.model, item.serial
);
}
Ok(())
@ -647,7 +617,6 @@ fn scan(param: Value) -> Result<(), Error> {
)]
/// Drive Status
fn status(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let mut handle = get_tape_handle(&param)?;
@ -677,7 +646,6 @@ fn status(param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -694,7 +662,6 @@ fn status(param: Value) -> Result<(), Error> {
)]
/// Unlock the tape drive door
fn unlock(param: Value) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
handle.set_medium_removal(true)?;
@ -702,7 +669,6 @@ fn unlock(param: Value) -> Result<(), Error> {
Ok(())
}
#[api(
input: {
properties: {
@ -723,7 +689,6 @@ fn unlock(param: Value) -> Result<(), Error> {
)]
/// Volume Statistics
fn volume_statistics(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let mut handle = get_tape_handle(&param)?;
@ -772,7 +737,6 @@ fn volume_statistics(param: Value) -> Result<(), Error> {
)]
/// Write count (default 1) EOF marks at current position.
fn weof(count: Option<usize>, param: Value) -> Result<(), Error> {
let count = count.unwrap_or(1);
let mut handle = get_tape_handle(&param)?;
@ -825,7 +789,6 @@ fn options(
defaults: Option<bool>,
param: Value,
) -> Result<(), Error> {
let mut handle = get_tape_handle(&param)?;
if let Some(true) = defaults {
@ -838,7 +801,6 @@ fn options(
}
fn main() -> Result<(), Error> {
let uid = nix::unistd::Uid::current();
let username = match nix::unistd::User::from_uid(uid)? {
@ -875,8 +837,7 @@ fn main() -> Result<(), Error> {
.insert("tape-alert-flags", std_cmd(&API_METHOD_TAPE_ALERT_FLAGS))
.insert("unlock", std_cmd(&API_METHOD_UNLOCK))
.insert("volume-statistics", std_cmd(&API_METHOD_VOLUME_STATISTICS))
.insert("weof", std_cmd(&API_METHOD_WEOF).arg_param(&["count"]))
;
.insert("weof", std_cmd(&API_METHOD_WEOF).arg_param(&["count"]));
let mut rpcenv = CliEnvironment::new();
rpcenv.set_auth_id(Some(format!("{}@pam", username)));

81
pbs-tape/src/bin/pmtx.rs
View File

@ -11,29 +11,25 @@
///
/// - list serial number for attached drives, so that it is possible
/// to associate drive numbers with drives.
use std::fs::File;
use anyhow::{bail, Error};
use serde_json::Value;
use proxmox_schema::api;
use proxmox_router::cli::*;
use proxmox_router::RpcEnvironment;
use proxmox_schema::api;
use pbs_api_types::{LtoTapeDrive, ScsiTapeChanger, CHANGER_NAME_SCHEMA, SCSI_CHANGER_PATH_SCHEMA};
use pbs_config::drive::complete_changer_name;
use pbs_api_types::{
SCSI_CHANGER_PATH_SCHEMA, CHANGER_NAME_SCHEMA, ScsiTapeChanger, LtoTapeDrive,
};
use pbs_tape::{
linux_list_drives::{complete_changer_path, linux_tape_changer_list},
sg_pt_changer,
sgutils2::scsi_inquiry,
ElementStatus,
sg_pt_changer,
linux_list_drives::{complete_changer_path, linux_tape_changer_list},
};
fn get_changer_handle(param: &Value) -> Result<File, Error> {
if let Some(name) = param["changer"].as_str() {
let (config, _digest) = pbs_config::drive::config()?;
let changer_config: ScsiTapeChanger = config.lookup("changer", name)?;
@ -83,10 +79,7 @@ fn get_changer_handle(param: &Value) -> Result<File, Error> {
},
)]
/// Inquiry
fn inquiry(
param: Value,
) -> Result<(), Error> {
fn inquiry(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let result: Result<_, Error> = proxmox_lang::try_block!({
@ -113,7 +106,10 @@ fn inquiry(
let info = result?;
println!("Type: {} ({})", info.peripheral_type_text, info.peripheral_type);
println!(
"Type: {} ({})",
info.peripheral_type_text, info.peripheral_type
);
println!("Vendor: {}", info.vendor);
println!("Product: {}", info.product);
println!("Revision: {}", info.revision);
@ -136,10 +132,7 @@ fn inquiry(
},
)]
/// Inventory
fn inventory(
param: Value,
) -> Result<(), Error> {
fn inventory(param: Value) -> Result<(), Error> {
let mut file = get_changer_handle(&param)?;
sg_pt_changer::initialize_element_status(&mut file)?;
@ -170,12 +163,7 @@ fn inventory(
},
)]
/// Load
fn load(
param: Value,
slot: u64,
drivenum: Option<u64>,
) -> Result<(), Error> {
fn load(param: Value, slot: u64, drivenum: Option<u64>) -> Result<(), Error> {
let mut file = get_changer_handle(&param)?;
let drivenum = drivenum.unwrap_or(0);
@ -210,12 +198,7 @@ fn load(
},
)]
/// Unload
fn unload(
param: Value,
slot: Option<u64>,
drivenum: Option<u64>,
) -> Result<(), Error> {
fn unload(param: Value, slot: Option<u64>, drivenum: Option<u64>) -> Result<(), Error> {
let mut file = get_changer_handle(&param)?;
let drivenum = drivenum.unwrap_or(0);
@ -271,10 +254,7 @@ fn unload(
},
)]
/// Changer Status
fn status(
param: Value,
) -> Result<(), Error> {
fn status(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let result: Result<_, Error> = proxmox_lang::try_block!({
@ -302,7 +282,10 @@ fn status(
let status = result?;
for (i, transport) in status.transports.iter().enumerate() {
println!("Transport Element (Griper) {:>3}: {:?}",i, transport.status);
println!(
"Transport Element (Griper) {:>3}: {:?}",
i, transport.status
);
}
for (i, drive) in status.drives.iter().enumerate() {
@ -355,12 +338,7 @@ fn status(
},
)]
/// Transfer
fn transfer(
param: Value,
from: u64,
to: u64,
) -> Result<(), Error> {
fn transfer(param: Value, from: u64, to: u64) -> Result<(), Error> {
let mut file = get_changer_handle(&param)?;
sg_pt_changer::transfer_medium(&mut file, from, to)?;
@ -380,7 +358,6 @@ fn transfer(
)]
/// Scan for existing tape changer devices
fn scan(param: Value) -> Result<(), Error> {
let output_format = get_output_format(&param);
let list = linux_tape_changer_list();
@ -400,14 +377,16 @@ fn scan(param: Value) -> Result<(), Error> {
}
for item in list.iter() {
println!("{} ({}/{}/{})", item.path, item.vendor, item.model, item.serial);
println!(
"{} ({}/{}/{})",
item.path, item.vendor, item.model, item.serial
);
}
Ok(())
}
fn main() -> Result<(), Error> {
let uid = nix::unistd::Uid::current();
let username = match nix::unistd::User::from_uid(uid)? {
@ -415,49 +394,47 @@ fn main() -> Result<(), Error> {
None => bail!("unable to get user name"),
};
let cmd_def = CliCommandMap::new()
.usage_skip_options(&["device", "changer", "output-format"])
.insert(
"inquiry",
CliCommand::new(&API_METHOD_INQUIRY)
.completion_cb("changer", complete_changer_name)
.completion_cb("device", complete_changer_path)
.completion_cb("device", complete_changer_path),
)
.insert(
"inventory",
CliCommand::new(&API_METHOD_INVENTORY)
.completion_cb("changer", complete_changer_name)
.completion_cb("device", complete_changer_path)
.completion_cb("device", complete_changer_path),
)
.insert(
"load",
CliCommand::new(&API_METHOD_LOAD)
.arg_param(&["slot"])
.completion_cb("changer", complete_changer_name)
.completion_cb("device", complete_changer_path)
.completion_cb("device", complete_changer_path),
)
.insert(
"unload",
CliCommand::new(&API_METHOD_UNLOAD)
.completion_cb("changer", complete_changer_name)
.completion_cb("device", complete_changer_path)
.completion_cb("device", complete_changer_path),
)
.insert("scan", CliCommand::new(&API_METHOD_SCAN))
.insert(
"status",
CliCommand::new(&API_METHOD_STATUS)
.completion_cb("changer", complete_changer_name)
.completion_cb("device", complete_changer_path)
.completion_cb("device", complete_changer_path),
)
.insert(
"transfer",
CliCommand::new(&API_METHOD_TRANSFER)
.arg_param(&["from", "to"])
.completion_cb("changer", complete_changer_name)
.completion_cb("device", complete_changer_path)
)
;
.completion_cb("device", complete_changer_path),
);
let mut rpcenv = CliEnvironment::new();
rpcenv.set_auth_id(Some(format!("{}@pam", username)));

63
pbs-tape/src/blocked_reader.rs
View File

@ -1,12 +1,8 @@
use std::io::Read;
use crate::{
TapeRead,
BlockRead,
BlockReadError,
BlockHeader, BlockHeaderFlags, BlockRead, BlockReadError, TapeRead,
PROXMOX_TAPE_BLOCK_HEADER_MAGIC_1_0,
BlockHeader,
BlockHeaderFlags,
};
/// Read a block stream generated by 'BlockWriter'.
@ -32,13 +28,11 @@ pub struct BlockedReader<R> {
}
impl<R: BlockRead> BlockedReader<R> {
/// Create a new BlockedReader instance.
///
/// This tries to read the first block. Please inspect the error
/// to detect EOF and EOT.
pub fn open(mut reader: R) -> Result<Self, BlockReadError> {
let mut buffer = BlockHeader::new();
Self::read_block_frame(&mut buffer, &mut reader)?;
@ -67,32 +61,37 @@ impl <R: BlockRead> BlockedReader<R> {
}
fn check_buffer(buffer: &BlockHeader, seq_nr: u32) -> Result<(usize, bool), std::io::Error> {
if buffer.magic != PROXMOX_TAPE_BLOCK_HEADER_MAGIC_1_0 {
proxmox_lang::io_bail!("detected tape block with wrong magic number - not written by proxmox tape");
proxmox_lang::io_bail!(
"detected tape block with wrong magic number - not written by proxmox tape"
);
}
if seq_nr != buffer.seq_nr() {
proxmox_lang::io_bail!(
"detected tape block with wrong sequence number ({} != {})",
seq_nr, buffer.seq_nr())
seq_nr,
buffer.seq_nr()
)
}
let size = buffer.size();
let found_end_marker = buffer.flags.contains(BlockHeaderFlags::END_OF_STREAM);
if size > buffer.payload.len() {
proxmox_lang::io_bail!("detected tape block with wrong payload size ({} > {}", size, buffer.payload.len());
proxmox_lang::io_bail!(
"detected tape block with wrong payload size ({} > {}",
size,
buffer.payload.len()
);
} else if size == 0 && !found_end_marker {
proxmox_lang::io_bail!("detected tape block with zero payload size");
}
Ok((size, found_end_marker))
}
fn read_block_frame(buffer: &mut BlockHeader, reader: &mut R) -> Result<(), BlockReadError> {
let data = unsafe {
std::slice::from_raw_parts_mut(
(buffer as *mut BlockHeader) as *mut u8,
@ -115,20 +114,15 @@ impl <R: BlockRead> BlockedReader<R> {
Ok(_) => {
proxmox_lang::io_bail!("detected tape block after block-stream end marker");
}
Err(BlockReadError::EndOfFile) => {
Ok(())
}
Err(BlockReadError::EndOfFile) => Ok(()),
Err(BlockReadError::EndOfStream) => {
proxmox_lang::io_bail!("got unexpected end of tape");
}
Err(BlockReadError::Error(err)) => {
Err(err)
}
Err(BlockReadError::Error(err)) => Err(err),
}
}
fn read_block(&mut self, check_end_marker: bool) -> Result<usize, std::io::Error> {
match Self::read_block_frame(&mut self.buffer, &mut self.reader) {
Ok(()) => { /* ok */ }
Err(BlockReadError::EndOfFile) => {
@ -150,7 +144,8 @@ impl <R: BlockRead> BlockedReader<R> {
let (size, found_end_marker) = Self::check_buffer(&self.buffer, self.seq_nr)?;
self.seq_nr += 1;
if found_end_marker { // consume EOF mark
if found_end_marker {
// consume EOF mark
self.found_end_marker = true;
self.incomplete = self.buffer.flags.contains(BlockHeaderFlags::INCOMPLETE);
Self::consume_eof_marker(&mut self.reader)?;
@ -164,7 +159,6 @@ impl <R: BlockRead> BlockedReader<R> {
}
impl<R: BlockRead> TapeRead for BlockedReader<R> {
fn is_incomplete(&self) -> Result<bool, std::io::Error> {
if !self.got_eod {
proxmox_lang::io_bail!("is_incomplete failed: EOD not reached");
@ -203,9 +197,7 @@ impl <R: BlockRead> TapeRead for BlockedReader<R> {
}
impl<R: BlockRead> Read for BlockedReader<R> {
fn read(&mut self, buffer: &mut [u8]) -> Result<usize, std::io::Error> {
if self.read_error {
proxmox_lang::io_bail!("detected read after error - internal error");
}
@ -213,7 +205,8 @@ impl <R: BlockRead> Read for BlockedReader<R> {
let mut buffer_size = self.buffer.size();
let mut rest = (buffer_size as isize) - (self.read_pos as isize);
if rest <= 0 && !self.got_eod { // try to refill buffer
if rest <= 0 && !self.got_eod {
// try to refill buffer
buffer_size = match self.read_block(true) {
Ok(len) => len,
err => {
@ -232,8 +225,8 @@ impl <R: BlockRead> Read for BlockedReader<R> {
} else {
rest as usize
};
buffer[..copy_len].copy_from_slice(
&self.buffer.payload[self.read_pos..(self.read_pos + copy_len)]);
buffer[..copy_len]
.copy_from_slice(&self.buffer.payload[self.read_pos..(self.read_pos + copy_len)]);
self.read_pos += copy_len;
Ok(copy_len)
}
@ -242,20 +235,14 @@ impl <R: BlockRead> Read for BlockedReader<R> {
#[cfg(test)]
mod test {
use std::io::Read;
use anyhow::{bail, Error};
use crate::{
TapeWrite,
BlockReadError,
EmulateTapeReader,
EmulateTapeWriter,
PROXMOX_TAPE_BLOCK_SIZE,
BlockedReader,
BlockedWriter,
BlockReadError, BlockedReader, BlockedWriter, EmulateTapeReader, EmulateTapeWriter,
TapeWrite, PROXMOX_TAPE_BLOCK_SIZE,
};
use anyhow::{bail, Error};
use std::io::Read;
fn write_and_verify(data: &[u8]) -> Result<(), Error> {
let mut tape_data = Vec::new();
{
@ -309,7 +296,7 @@ mod test {
let reader = &mut &tape_data[..];
let reader = EmulateTapeReader::new(reader);
match BlockedReader::open(reader) {
Err(BlockReadError::EndOfFile) => { /* OK */ },
Err(BlockReadError::EndOfFile) => { /* OK */ }
_ => bail!("expected EOF"),
}

27
pbs-tape/src/blocked_writer.rs
View File

@ -1,11 +1,6 @@
use proxmox_io::vec;
use crate::{
TapeWrite,
BlockWrite,
BlockHeader,
BlockHeaderFlags,
};
use crate::{BlockHeader, BlockHeaderFlags, BlockWrite, TapeWrite};
/// Assemble and write blocks of data
///
@ -23,7 +18,6 @@ pub struct BlockedWriter<W: BlockWrite> {
}
impl<W: BlockWrite> Drop for BlockedWriter<W> {
// Try to make sure to end the file with a filemark
fn drop(&mut self) {
if !self.wrote_eof {
@ -33,7 +27,6 @@ impl <W: BlockWrite> Drop for BlockedWriter<W> {
}
impl<W: BlockWrite> BlockedWriter<W> {
/// Allow access to underlying writer
pub fn writer_ref_mut(&mut self) -> &mut W {
&mut self.writer
@ -53,7 +46,6 @@ impl <W: BlockWrite> BlockedWriter<W> {
}
fn write_block(buffer: &BlockHeader, writer: &mut W) -> Result<bool, std::io::Error> {
let data = unsafe {
std::slice::from_raw_parts(
(buffer as *const BlockHeader) as *const u8,
@ -73,8 +65,9 @@ impl <W: BlockWrite> BlockedWriter<W> {
}
fn write(&mut self, data: &[u8]) -> Result<usize, std::io::Error> {
if data.is_empty() { return Ok(0); }
if data.is_empty() {
return Ok(0);
}
let rest = self.buffer.payload.len() - self.buffer_pos;
let bytes = if data.len() < rest { data.len() } else { rest };
@ -89,21 +82,20 @@ impl <W: BlockWrite> BlockedWriter<W> {
self.buffer.set_seq_nr(self.seq_nr);
self.seq_nr += 1;
let leom = Self::write_block(&self.buffer, &mut self.writer)?;
if leom { self.logical_end_of_media = true; }
if leom {
self.logical_end_of_media = true;
}
self.buffer_pos = 0;
self.bytes_written += BlockHeader::SIZE;
} else {
self.buffer_pos += bytes;
}
Ok(bytes)
}
}
impl<W: BlockWrite> TapeWrite for BlockedWriter<W> {
fn write_all(&mut self, mut data: &[u8]) -> Result<bool, std::io::Error> {
while !data.is_empty() {
match self.write(data) {
@ -125,7 +117,9 @@ impl <W: BlockWrite> TapeWrite for BlockedWriter<W> {
fn finish(&mut self, incomplete: bool) -> Result<bool, std::io::Error> {
vec::clear(&mut self.buffer.payload[self.buffer_pos..]);
self.buffer.flags = BlockHeaderFlags::END_OF_STREAM;
if incomplete { self.buffer.flags |= BlockHeaderFlags::INCOMPLETE; }
if incomplete {
self.buffer.flags |= BlockHeaderFlags::INCOMPLETE;
}
self.buffer.set_size(self.buffer_pos);
self.buffer.set_seq_nr(self.seq_nr);
self.seq_nr += 1;
@ -139,5 +133,4 @@ impl <W: BlockWrite> TapeWrite for BlockedWriter<W> {
fn logical_end_of_media(&self) -> bool {
self.logical_end_of_media
}
}

16
pbs-tape/src/emulate_tape_reader.rs
View File

@ -13,16 +13,20 @@ pub struct EmulateTapeReader<R: Read> {
}
impl<R: Read> EmulateTapeReader<R> {
pub fn new(reader: R) -> Self {
Self { reader, got_eof: false }
Self {
reader,
got_eof: false,
}
}
}
impl<R: Read> BlockRead for EmulateTapeReader<R> {
fn read_block(&mut self, buffer: &mut [u8]) -> Result<usize, BlockReadError> {
if self.got_eof {
return Err(BlockReadError::Error(proxmox_lang::io_format_err!("detected read after EOF!")));
return Err(BlockReadError::Error(proxmox_lang::io_format_err!(
"detected read after EOF!"
)));
}
match self.reader.read_exact_or_eof(buffer)? {
false => {
@ -32,13 +36,11 @@ impl <R: Read> BlockRead for EmulateTapeReader<R> {
true => {
// test buffer len after EOF test (to allow EOF test with small buffers in BufferedReader)
if buffer.len() != PROXMOX_TAPE_BLOCK_SIZE {
return Err(BlockReadError::Error(
proxmox_lang::io_format_err!(
return Err(BlockReadError::Error(proxmox_lang::io_format_err!(
"EmulateTapeReader: read_block with wrong block size ({} != {})",
buffer.len(),
PROXMOX_TAPE_BLOCK_SIZE,
)
));
)));
}
Ok(buffer.len())
}

15
pbs-tape/src/emulate_tape_writer.rs
View File

@ -15,10 +15,8 @@ pub struct EmulateTapeWriter<W> {
}
impl<W: Write> EmulateTapeWriter<W> {
/// Create a new instance allowing to write about max_size bytes
pub fn new(writer: W, max_size: usize) -> Self {
let mut max_blocks = max_size / PROXMOX_TAPE_BLOCK_SIZE;
if max_blocks < 2 {
@ -35,16 +33,19 @@ impl <W: Write> EmulateTapeWriter<W> {
}
impl<W: Write> BlockWrite for EmulateTapeWriter<W> {
fn write_block(&mut self, buffer: &[u8]) -> Result<bool, io::Error> {
if buffer.len() != PROXMOX_TAPE_BLOCK_SIZE {
proxmox_lang::io_bail!("EmulateTapeWriter: got write with wrong block size ({} != {}",
buffer.len(), PROXMOX_TAPE_BLOCK_SIZE);
proxmox_lang::io_bail!(
"EmulateTapeWriter: got write with wrong block size ({} != {}",
buffer.len(),
PROXMOX_TAPE_BLOCK_SIZE
);
}
if self.block_nr >= self.max_blocks + 2 {
return Err(io::Error::from_raw_os_error(nix::errno::Errno::ENOSPC as i32));
return Err(io::Error::from_raw_os_error(
nix::errno::Errno::ENOSPC as i32,
));
}
self.writer.write_all(buffer)?;

26
pbs-tape/src/lib.rs
View File

@ -3,7 +3,7 @@ use std::collections::HashSet;
use anyhow::{bail, Error};
use bitflags::bitflags;
use endian_trait::Endian;
use serde::{Serialize, Deserialize};
use serde::{Deserialize, Serialize};
use serde_json::Value;
use proxmox_uuid::Uuid;
@ -115,11 +115,9 @@ pub struct MediaContentHeader {
}
impl MediaContentHeader {
/// Create a new instance with autogenerated Uuid
pub fn new(content_magic: [u8; 8], size: u32) -> Self {
let uuid = *Uuid::generate()
.into_inner();
let uuid = *Uuid::generate().into_inner();
Self {
magic: PROXMOX_BACKUP_CONTENT_HEADER_MAGIC_1_0,
content_magic,
@ -153,9 +151,7 @@ impl MediaContentHeader {
}
}
impl BlockHeader {
pub const SIZE: usize = PROXMOX_TAPE_BLOCK_SIZE;
/// Allocates a new instance on the heap
@ -166,13 +162,9 @@ impl BlockHeader {
let page_size = unsafe { libc::sysconf(libc::_SC_PAGESIZE) } as usize;
let mut buffer = unsafe {
let ptr = alloc_zeroed(
Layout::from_size_align(Self::SIZE, page_size)
.unwrap(),
);
let ptr = alloc_zeroed(Layout::from_size_align(Self::SIZE, page_size).unwrap());
Box::from_raw(
std::slice::from_raw_parts_mut(ptr, Self::SIZE - 16)
as *mut [u8] as *mut Self
std::slice::from_raw_parts_mut(ptr, Self::SIZE - 16) as *mut [u8] as *mut Self,
)
};
buffer.magic = PROXMOX_TAPE_BLOCK_HEADER_MAGIC_1_0;
@ -263,13 +255,16 @@ pub struct MtxStatus {
}
impl MtxStatus {
pub fn slot_address(&self, slot: u64) -> Result<u16, Error> {
if slot == 0 {
bail!("invalid slot number '{}' (slots numbers starts at 1)", slot);
}
if slot > (self.slots.len() as u64) {
bail!("invalid slot number '{}' (max {} slots)", slot, self.slots.len());
bail!(
"invalid slot number '{}' (max {} slots)",
slot,
self.slots.len()
);
}
Ok(self.slots[(slot - 1) as usize].element_address)
@ -287,8 +282,7 @@ impl MtxStatus {
// simply use first transport
// (are there changers exposing more than one?)
// defaults to 0 for changer that do not report transports
self
.transports
self.transports
.get(0)
.map(|t| t.element_address)
.unwrap_or(0u16)

131
pbs-tape/src/linux_list_drives.rs
View File

@ -1,8 +1,8 @@
use std::path::{Path, PathBuf};
use std::collections::HashMap;
use std::fs::{OpenOptions, File};
use std::fs::{File, OpenOptions};
use std::os::unix::fs::OpenOptionsExt;
use std::os::unix::io::AsRawFd;
use std::path::{Path, PathBuf};
use anyhow::{bail, format_err, Error};
use nix::fcntl::{fcntl, FcntlArg, OFlag};
@ -19,14 +19,13 @@ lazy_static::lazy_static!{
/// List linux tape changer devices
pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
let mut list = Vec::new();
let dir_iter = match scan_subdir(
libc::AT_FDCWD,
"/sys/class/scsi_generic",
&SCSI_GENERIC_NAME_REGEX)
{
&SCSI_GENERIC_NAME_REGEX,
) {
Err(_) => return list,
Ok(iter) => iter,
};
@ -63,7 +62,9 @@ pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
continue;
}
}
_ => { continue; }
_ => {
continue;
}
}
// let mut test_path = sys_path.clone();
@ -75,22 +76,42 @@ pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
Some(dev_path) => dev_path,
};
let serial = match device.property_value("ID_SCSI_SERIAL")
let serial = match device
.property_value("ID_SCSI_SERIAL")
.map(std::ffi::OsString::from)
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
{
.and_then(|s| {
if let Ok(s) = s.into_string() {
Some(s)
} else {
None
}
}) {
None => continue,
Some(serial) => serial,
};
let vendor = device.property_value("ID_VENDOR")
let vendor = device
.property_value("ID_VENDOR")
.map(std::ffi::OsString::from)
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
.and_then(|s| {
if let Ok(s) = s.into_string() {
Some(s)
} else {
None
}
})
.unwrap_or_else(|| String::from("unknown"));
let model = device.property_value("ID_MODEL")
let model = device
.property_value("ID_MODEL")
.map(std::ffi::OsString::from)
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
.and_then(|s| {
if let Ok(s) = s.into_string() {
Some(s)
} else {
None
}
})
.unwrap_or_else(|| String::from("unknown"));
let dev_path = format!("/dev/tape/by-id/scsi-{}", serial);
@ -113,14 +134,13 @@ pub fn linux_tape_changer_list() -> Vec<TapeDeviceInfo> {
/// List LTO drives
pub fn lto_tape_device_list() -> Vec<TapeDeviceInfo> {
let mut list = Vec::new();
let dir_iter = match scan_subdir(
libc::AT_FDCWD,
"/sys/class/scsi_generic",
&SCSI_GENERIC_NAME_REGEX)
{
&SCSI_GENERIC_NAME_REGEX,
) {
Err(_) => return list,
Ok(iter) => iter,
};
@ -157,7 +177,9 @@ pub fn lto_tape_device_list() -> Vec<TapeDeviceInfo> {
continue;
}
}
_ => { continue; }
_ => {
continue;
}
}
// let mut test_path = sys_path.clone();
@ -169,22 +191,42 @@ pub fn lto_tape_device_list() -> Vec<TapeDeviceInfo> {
Some(dev_path) => dev_path,
};
let serial = match device.property_value("ID_SCSI_SERIAL")
let serial = match device
.property_value("ID_SCSI_SERIAL")
.map(std::ffi::OsString::from)
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
{
.and_then(|s| {
if let Ok(s) = s.into_string() {
Some(s)
} else {
None
}
}) {
None => continue,
Some(serial) => serial,
};
let vendor = device.property_value("ID_VENDOR")
let vendor = device
.property_value("ID_VENDOR")
.map(std::ffi::OsString::from)
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
.and_then(|s| {
if let Ok(s) = s.into_string() {
Some(s)
} else {
None
}
})
.unwrap_or_else(|| String::from("unknown"));
let model = device.property_value("ID_MODEL")
let model = device
.property_value("ID_MODEL")
.map(std::ffi::OsString::from)
.and_then(|s| if let Ok(s) = s.into_string() { Some(s) } else { None })
.and_then(|s| {
if let Ok(s) = s.into_string() {
Some(s)
} else {
None
}
})
.unwrap_or_else(|| String::from("unknown"));
let dev_path = format!("/dev/tape/by-id/scsi-{}-sg", serial);
@ -206,17 +248,14 @@ pub fn lto_tape_device_list() -> Vec<TapeDeviceInfo> {
}
/// Test if a device exists, and returns associated `TapeDeviceInfo`
pub fn lookup_device<'a>(
devices: &'a[TapeDeviceInfo],
path: &str,
) -> Option<&'a TapeDeviceInfo> {
pub fn lookup_device<'a>(devices: &'a [TapeDeviceInfo], path: &str) -> Option<&'a TapeDeviceInfo> {
if let Ok(stat) = nix::sys::stat::stat(path) {
let major = unsafe { libc::major(stat.st_rdev) };
let minor = unsafe { libc::minor(stat.st_rdev) };
devices.iter().find(|d| d.major == major && d.minor == minor)
devices
.iter()
.find(|d| d.major == major && d.minor == minor)
} else {
None
}
@ -227,7 +266,6 @@ pub fn lookup_device_identification<'a>(
devices: &'a [TapeDeviceInfo],
path: &str,
) -> OptionalDeviceIdentification {
if let Some(info) = lookup_device(devices, path) {
OptionalDeviceIdentification {
vendor: Some(info.vendor.clone()),
@ -244,20 +282,15 @@ pub fn lookup_device_identification<'a>(
}
/// Make sure path is a lto tape device
pub fn check_drive_path(
drives: &[TapeDeviceInfo],
path: &str,
) -> Result<(), Error> {
pub fn check_drive_path(drives: &[TapeDeviceInfo], path: &str) -> Result<(), Error> {
if lookup_device(drives, path).is_none() {
bail!("path '{}' is not a lto SCSI-generic tape device", path);
}
Ok(())
}
/// Check for correct Major/Minor numbers
pub fn check_tape_is_lto_tape_device(file: &File) -> Result<(), Error> {
let stat = nix::sys::stat::fstat(file.as_raw_fd())?;
let devnum = stat.st_rdev;
@ -281,10 +314,7 @@ pub fn check_tape_is_lto_tape_device(file: &File) -> Result<(), Error> {
/// The open call use O_NONBLOCK, but that flag is cleard after open
/// succeeded. This also checks if the device is a non-rewinding tape
/// device.
pub fn open_lto_tape_device(
path: &str,
) -> Result<File, Error> {
pub fn open_lto_tape_device(path: &str) -> Result<File, Error> {
let file = OpenOptions::new()
.read(true)
.write(true)
@ -293,14 +323,12 @@ pub fn open_lto_tape_device(
// clear O_NONBLOCK from now on.
let flags = fcntl(file.as_raw_fd(), FcntlArg::F_GETFL)
.into_io_result()?;
let flags = fcntl(file.as_raw_fd(), FcntlArg::F_GETFL).into_io_result()?;
let mut flags = OFlag::from_bits_truncate(flags);
flags.remove(OFlag::O_NONBLOCK);
fcntl(file.as_raw_fd(), FcntlArg::F_SETFL(flags))
.into_io_result()?;
fcntl(file.as_raw_fd(), FcntlArg::F_SETFL(flags)).into_io_result()?;
check_tape_is_lto_tape_device(&file)
.map_err(|err| format_err!("device type check {:?} failed - {}", path, err))?;
@ -308,15 +336,20 @@ pub fn open_lto_tape_device(
Ok(file)
}
// shell completion helper
/// List changer device paths
pub fn complete_changer_path(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
linux_tape_changer_list().iter().map(|v| v.path.clone()).collect()
linux_tape_changer_list()
.iter()
.map(|v| v.path.clone())
.collect()
}
/// List tape device paths
pub fn complete_drive_path(_arg: &str, _param: &HashMap<String, String>) -> Vec<String> {
lto_tape_device_list().iter().map(|v| v.path.clone()).collect()
lto_tape_device_list()
.iter()
.map(|v| v.path.clone())
.collect()
}

173
pbs-tape/src/sg_pt_changer.rs
View File

@ -1,9 +1,9 @@
//! SCSI changer implementation using libsgutil2
use std::os::unix::prelude::AsRawFd;
use std::io::Read;
use std::collections::HashMap;
use std::fs::{File, OpenOptions};
use std::io::Read;
use std::os::unix::prelude::AsRawFd;
use std::path::Path;
use std::fs::{OpenOptions, File};
use anyhow::{bail, format_err, Error};
use endian_trait::Endian;
@ -13,14 +13,8 @@ use proxmox_io::ReadExt;
use pbs_api_types::ScsiTapeChanger;
use crate::{
ElementStatus,MtxStatus,TransportElementStatus,DriveStatus,StorageElementStatus,
sgutils2::{
SgRaw,
SENSE_KEY_NOT_READY,
ScsiError,
scsi_ascii_to_string,
scsi_inquiry,
},
sgutils2::{scsi_ascii_to_string, scsi_inquiry, ScsiError, SgRaw, SENSE_KEY_NOT_READY},
DriveStatus, ElementStatus, MtxStatus, StorageElementStatus, TransportElementStatus,
};
const SCSI_CHANGER_DEFAULT_TIMEOUT: usize = 60 * 5; // 5 minutes
@ -28,7 +22,6 @@ const SCSI_VOLUME_TAG_LEN: usize = 36;
/// Initialize element status (Inventory)
pub fn initialize_element_status<F: AsRawFd>(file: &mut F) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(file, 64)?;
// like mtx(1), set a very long timeout (30 minutes)
@ -37,7 +30,8 @@ pub fn initialize_element_status<F: AsRawFd>(file: &mut F) -> Result<(), Error>
let mut cmd = Vec::new();
cmd.extend(&[0x07, 0, 0, 0, 0, 0]); // INITIALIZE ELEMENT STATUS (07h)
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("initializte element status (07h) failed - {}", err))?;
Ok(())
@ -78,7 +72,6 @@ fn execute_scsi_command<F: AsRawFd>(
error_prefix: &str,
retry: bool,
) -> Result<Vec<u8>, Error> {
let start = std::time::SystemTime::now();
let mut last_msg: Option<String> = None;
@ -103,7 +96,10 @@ fn execute_scsi_command<F: AsRawFd>(
if let ScsiError::Sense(ref sense) = err {
// Not Ready - becoming ready
if sense.sense_key == SENSE_KEY_NOT_READY && sense.asc == 0x04 && sense.ascq == 1 {
if sense.sense_key == SENSE_KEY_NOT_READY
&& sense.asc == 0x04
&& sense.ascq == 1
{
// wait up to 5 minutes, long enough to finish inventorize
timeout = std::time::Duration::new(5 * 60, 0);
}
@ -120,11 +116,9 @@ fn execute_scsi_command<F: AsRawFd>(
}
}
fn read_element_address_assignment<F: AsRawFd>(
file: &mut F,
) -> Result<AddressAssignmentPage, Error> {
let allocation_len: u8 = u8::MAX;
let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
sg_raw.set_timeout(SCSI_CHANGER_DEFAULT_TIMEOUT);
@ -148,7 +142,8 @@ fn read_element_address_assignment<F: AsRawFd>(
}
Ok(page)
}).map_err(|err: Error| format_err!("decode element address assignment page failed - {}", err))
})
.map_err(|err: Error| format_err!("decode element address assignment page failed - {}", err))
}
fn scsi_move_medium_cdb(
@ -156,7 +151,6 @@ fn scsi_move_medium_cdb(
source_element_address: u16,
destination_element_address: u16,
) -> Vec<u8> {
let mut cmd = Vec::new();
cmd.push(0xA5); // MOVE MEDIUM (A5h)
cmd.push(0); // reserved
@ -172,11 +166,7 @@ fn scsi_move_medium_cdb(
}
/// Load media from storage slot into drive
pub fn load_slot(
file: &mut File,
from_slot: u64,
drivenum: u64,
) -> Result<(), Error> {
pub fn load_slot(file: &mut File, from_slot: u64, drivenum: u64) -> Result<(), Error> {
let status = read_element_status(file)?;
let transport_address = status.transport_address();
@ -192,19 +182,15 @@ pub fn load_slot(
let mut sg_raw = SgRaw::new(file, 64)?;
sg_raw.set_timeout(SCSI_CHANGER_DEFAULT_TIMEOUT);
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("load drive failed - {}", err))?;
Ok(())
}
/// Unload media from drive into a storage slot
pub fn unload(
file: &mut File,
to_slot: u64,
drivenum: u64,
) -> Result<(), Error> {
pub fn unload(file: &mut File, to_slot: u64, drivenum: u64) -> Result<(), Error> {
let status = read_element_status(file)?;
let transport_address = status.transport_address();
@ -220,7 +206,8 @@ pub fn unload(
let mut sg_raw = SgRaw::new(file, 64)?;
sg_raw.set_timeout(SCSI_CHANGER_DEFAULT_TIMEOUT);
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("unload drive failed - {}", err))?;
Ok(())
@ -232,7 +219,6 @@ pub fn transfer_medium<F: AsRawFd>(
from_slot: u64,
to_slot: u64,
) -> Result<(), Error> {
let status = read_element_status(file)?;
let transport_address = status.transport_address();
@ -248,10 +234,13 @@ pub fn transfer_medium<F: AsRawFd>(
let mut sg_raw = SgRaw::new(file, 64)?;
sg_raw.set_timeout(SCSI_CHANGER_DEFAULT_TIMEOUT);
sg_raw.do_command(&cmd)
.map_err(|err| {
format_err!("transfer medium from slot {} to slot {} failed - {}",
from_slot, to_slot, err)
sg_raw.do_command(&cmd).map_err(|err| {
format_err!(
"transfer medium from slot {} to slot {} failed - {}",
from_slot,
to_slot,
err
)
})?;
Ok(())
@ -293,7 +282,6 @@ fn scsi_read_element_status_cdb(
element_type: ElementType,
allocation_len: u32,
) -> Vec<u8> {
let mut cmd = Vec::new();
cmd.push(0xB8); // READ ELEMENT STATUS (B8h)
cmd.push(element_type.byte1());
@ -315,7 +303,6 @@ fn get_element<F: AsRawFd>(
allocation_len: u32,
mut retry: bool,
) -> Result<DecodedStatusPage, Error> {
let mut start_element_address = 0;
let number_of_elements: u16 = 1000; // some changers limit the query
@ -328,7 +315,12 @@ fn get_element<F: AsRawFd>(
};
loop {
let cmd = scsi_read_element_status_cdb(start_element_address, number_of_elements, element_type, allocation_len);
let cmd = scsi_read_element_status_cdb(
start_element_address,
number_of_elements,
element_type,
allocation_len,
);
let data = execute_scsi_command(sg_raw, &cmd, "read element status (B8h)", retry)?;
@ -364,7 +356,6 @@ fn get_element<F: AsRawFd>(
/// Read element status.
pub fn read_element_status<F: AsRawFd>(file: &mut F) -> Result<MtxStatus, Error> {
let inquiry = scsi_inquiry(file)?;
if inquiry.peripheral_type != 8 {
@ -387,15 +378,30 @@ pub fn read_element_status<F: AsRawFd>(file: &mut F) -> Result<MtxStatus, Error>
let page = get_element(&mut sg_raw, ElementType::Storage, allocation_len, true)?;
storage_slots.extend(page.storage_slots);
let page = get_element(&mut sg_raw, ElementType::ImportExport, allocation_len, false)?;
let page = get_element(
&mut sg_raw,
ElementType::ImportExport,
allocation_len,
false,
)?;
import_export_slots.extend(page.import_export_slots);
let page = get_element(&mut sg_raw, ElementType::DataTransfer, allocation_len, false)?;
let page = get_element(
&mut sg_raw,
ElementType::DataTransfer,
allocation_len,
false,
)?;
drives.extend(page.drives);
// get the serial + vendor + model,
// some changer require this to be an extra scsi command
let page = get_element(&mut sg_raw, ElementType::DataTransferWithDVCID, allocation_len, false)?;
let page = get_element(
&mut sg_raw,
ElementType::DataTransferWithDVCID,
allocation_len,
false,
)?;
// should be in same order and same count, but be on the safe side.
// there should not be too many drives normally
for drive in drives.iter_mut() {
@ -408,7 +414,12 @@ pub fn read_element_status<F: AsRawFd>(file: &mut F) -> Result<MtxStatus, Error>
}
}
let page = get_element(&mut sg_raw, ElementType::MediumTransport, allocation_len, false)?;
let page = get_element(
&mut sg_raw,
ElementType::MediumTransport,
allocation_len,
false,
)?;
transports.extend(page.transports);
let transport_count = setup.transport_element_count as usize;
@ -451,7 +462,11 @@ pub fn read_element_status<F: AsRawFd>(file: &mut F) -> Result<MtxStatus, Error>
let mut slots = storage_slots;
slots.extend(import_export_slots);
let mut status = MtxStatus { transports, drives, slots };
let mut status = MtxStatus {
transports,
drives,
slots,
};
// sanity checks
if status.drives.is_empty() {
@ -482,8 +497,7 @@ pub fn read_element_status<F: AsRawFd>(file: &mut F) -> Result<MtxStatus, Error>
pub fn status(config: &ScsiTapeChanger) -> Result<MtxStatus, Error> {
let path = &config.path;
let mut file = open(path)
.map_err(|err| format_err!("error opening '{}': {}", path, err))?;
let mut file = open(path).map_err(|err| format_err!("error opening '{}': {}", path, err))?;
let mut status = read_element_status(&mut file)
.map_err(|err| format_err!("error reading element status: {}", err))?;
@ -492,7 +506,6 @@ pub fn status(config: &ScsiTapeChanger) -> Result<MtxStatus, Error> {
Ok(status)
}
#[repr(C, packed)]
#[derive(Endian)]
struct ElementStatusHeader {
@ -513,14 +526,13 @@ struct SubHeader {
}
impl SubHeader {
fn parse_optional_volume_tag<R: Read>(
&self,
reader: &mut R,
full: bool,
) -> Result<Option<String>, Error> {
if (self.flags & 128) != 0 { // has PVolTag
if (self.flags & 128) != 0 {
// has PVolTag
let tmp = reader.read_exact_allocated(SCSI_VOLUME_TAG_LEN)?;
if full {
let volume_tag = scsi_ascii_to_string(&tmp);
@ -532,12 +544,9 @@ impl SubHeader {
// AFAIK, tape changer do not use AlternateVolumeTag
// but parse anyways, just to be sure
fn skip_alternate_volume_tag<R: Read>(
&self,
reader: &mut R,
) -> Result<Option<String>, Error> {
if (self.flags & 64) != 0 { // has AVolTag
fn skip_alternate_volume_tag<R: Read>(&self, reader: &mut R) -> Result<Option<String>, Error> {
if (self.flags & 64) != 0 {
// has AVolTag
let _tmp = reader.read_exact_allocated(SCSI_VOLUME_TAG_LEN)?;
}
@ -547,7 +556,8 @@ impl SubHeader {
#[repr(C, packed)]
#[derive(Endian)]
struct TransportDescriptor { // Robot/Griper
struct TransportDescriptor {
// Robot/Griper
element_address: u16,
flags1: u8,
reserved_3: u8,
@ -561,7 +571,8 @@ struct TransportDescriptor { // Robot/Griper
#[repr(C, packed)]
#[derive(Endian)]
struct TransferDescriptor { // Tape drive
struct TransferDescriptor {
// Tape drive
element_address: u16,
flags1: u8,
reserved_3: u8,
@ -578,7 +589,8 @@ struct TransferDescriptor { // Tape drive
#[repr(C, packed)]
#[derive(Endian)]
struct DvcidHead { // Drive Identifier Header
struct DvcidHead {
// Drive Identifier Header
code_set: u8,
identifier_type: u8,
reserved: u8,
@ -588,7 +600,8 @@ struct DvcidHead { // Drive Identifier Header
#[repr(C, packed)]
#[derive(Endian)]
struct StorageDescriptor { // Mail Slot
struct StorageDescriptor {
// Mail Slot
element_address: u16,
flags1: u8,
reserved_3: u8,
@ -630,7 +643,8 @@ fn decode_dvcid_info<R: Read>(reader: &mut R) -> Result<DvcidInfo, Error> {
let dvcid: DvcidHead = unsafe { reader.read_be_value()? };
let (serial, vendor, model) = match (dvcid.code_set, dvcid.identifier_type) {
(2, 0) => { // Serial number only (Quantum Superloader3 uses this)
(2, 0) => {
// Serial number only (Quantum Superloader3 uses this)
let serial = reader.read_exact_allocated(dvcid.identifier_len as usize)?;
let serial = scsi_ascii_to_string(&serial);
(Some(serial), None, None)
@ -661,9 +675,7 @@ fn decode_element_status_page(
data: &[u8],
start_element_address: u16,
) -> Result<DecodedStatusPage, Error> {
proxmox_lang::try_block!({
let mut result = DecodedStatusPage {
last_element_address: None,
transports: Vec::new(),
@ -690,7 +702,11 @@ fn decode_element_status_page(
if len < reader.len() {
reader = &reader[..len];
} else if len > reader.len() {
bail!("wrong amount of data: expected {}, got {}", len, reader.len());
bail!(
"wrong amount of data: expected {}, got {}",
len,
reader.len()
);
}
loop {
@ -763,7 +779,8 @@ fn decode_element_status_page(
4 => {
let desc: TransferDescriptor = unsafe { reader.read_be_value()? };
let loaded_slot = if (desc.flags2 & 128) != 0 { // SValid
let loaded_slot = if (desc.flags2 & 128) != 0 {
// SValid
Some(desc.source_storage_element_address as u64)
} else {
None
@ -798,23 +815,21 @@ fn decode_element_status_page(
}
Ok(result)
}).map_err(|err: Error| format_err!("decode element status failed - {}", err))
})
.map_err(|err: Error| format_err!("decode element status failed - {}", err))
}
/// Open the device for read/write, returns the file handle
pub fn open<P: AsRef<Path>>(path: P) -> Result<File, Error> {
let file = OpenOptions::new()
.read(true)
.write(true)
.open(path)?;
let file = OpenOptions::new().read(true).write(true).open(path)?;
Ok(file)
}
#[cfg(test)]
mod test {
use anyhow::Error;
use super::*;
use anyhow::Error;
struct StorageDesc {
address: u16,
@ -826,9 +841,10 @@ mod test {
trailing: &[u8],
element_type: u8,
) -> Vec<u8> {
let descs: Vec<Vec<u8>> = descriptors.iter().map(|desc| {
build_storage_descriptor(desc, trailing)
}).collect();
let descs: Vec<Vec<u8>> = descriptors
.iter()
.map(|desc| build_storage_descriptor(desc, trailing))
.collect();
let (desc_len, address) = if let Some(el) = descs.get(0) {
(el.len() as u16, descriptors[0].address)
@ -863,10 +879,7 @@ mod test {
res
}
fn build_storage_descriptor(
desc: &StorageDesc,
trailing: &[u8],
) -> Vec<u8> {
fn build_storage_descriptor(desc: &StorageDesc, trailing: &[u8]) -> Vec<u8> {
let mut res = Vec::new();
res.push(((desc.address >> 8) & 0xFF) as u8);
res.push((desc.address & 0xFF) as u8);

252
pbs-tape/src/sg_tape.rs
View File

@ -1,10 +1,10 @@
use std::time::SystemTime;
use std::convert::TryFrom;
use std::convert::TryInto;
use std::fs::{File, OpenOptions};
use std::os::unix::fs::OpenOptionsExt;
use std::os::unix::io::AsRawFd;
use std::path::Path;
use std::convert::TryFrom;
use std::convert::TryInto;
use std::time::SystemTime;
use anyhow::{bail, format_err, Error};
use endian_trait::Endian;
@ -25,29 +25,17 @@ pub use mam::*;
mod report_density;
pub use report_density::*;
use proxmox_sys::error::SysResult;
use proxmox_io::{ReadExt, WriteExt};
use proxmox_sys::error::SysResult;
use pbs_api_types::{MamAttribute, Lp17VolumeStatistics, LtoDriveAndMediaStatus};
use pbs_api_types::{Lp17VolumeStatistics, LtoDriveAndMediaStatus, MamAttribute};
use crate::{
BlockRead,
BlockReadError,
BlockWrite,
BlockedWriter,
BlockedReader,
sgutils2::{
SgRaw,
SenseInfo,
ScsiError,
InquiryInfo,
ModeParameterHeader,
ModeBlockDescriptor,
alloc_page_aligned_buffer,
scsi_inquiry,
scsi_mode_sense,
scsi_request_sense,
alloc_page_aligned_buffer, scsi_inquiry, scsi_mode_sense, scsi_request_sense, InquiryInfo,
ModeBlockDescriptor, ModeParameterHeader, ScsiError, SenseInfo, SgRaw,
},
BlockRead, BlockReadError, BlockWrite, BlockedReader, BlockedWriter,
};
#[repr(C, packed)]
@ -74,7 +62,6 @@ struct DataCompressionModePage {
}
impl DataCompressionModePage {
pub fn set_compression(&mut self, enable: bool) {
if enable {
self.flags2 |= 128;
@ -98,11 +85,9 @@ struct MediumConfigurationModePage {
}
impl MediumConfigurationModePage {
pub fn is_worm(&self) -> bool {
(self.flags2 & 1) == 1
}
}
#[derive(Debug)]
@ -122,18 +107,19 @@ pub struct SgTape {
}
impl SgTape {
const SCSI_TAPE_DEFAULT_TIMEOUT: usize = 60 * 10; // 10 minutes
/// Create a new instance
///
/// Uses scsi_inquiry to check the device type.
pub fn new(mut file: File) -> Result<Self, Error> {
let info = scsi_inquiry(&mut file)?;
if info.peripheral_type != 1 {
bail!("not a tape device (peripheral_type = {})", info.peripheral_type);
bail!(
"not a tape device (peripheral_type = {})",
info.peripheral_type
);
}
Ok(Self {
@ -169,14 +155,12 @@ impl SgTape {
.open(path)?;
// then clear O_NONBLOCK
let flags = fcntl(file.as_raw_fd(), FcntlArg::F_GETFL)
.into_io_result()?;
let flags = fcntl(file.as_raw_fd(), FcntlArg::F_GETFL).into_io_result()?;
let mut flags = OFlag::from_bits_truncate(flags);
flags.remove(OFlag::O_NONBLOCK);
fcntl(file.as_raw_fd(), FcntlArg::F_SETFL(flags))
.into_io_result()?;
fcntl(file.as_raw_fd(), FcntlArg::F_SETFL(flags)).into_io_result()?;
Self::new(file)
}
@ -203,7 +187,8 @@ impl SgTape {
}
cmd.extend(&[0, 0, 0, 0]);
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("erase failed - {}", err))?;
Ok(())
@ -211,7 +196,6 @@ impl SgTape {
/// Format media, single partition
pub fn format_media(&mut self, fast: bool) -> Result<(), Error> {
// try to get info about loaded media first
let (has_format, is_worm) = match self.read_medium_configuration_page() {
Ok((_head, block_descriptor, page)) => {
@ -236,7 +220,6 @@ impl SgTape {
}
Ok(())
} else {
self.rewind()?;
@ -261,7 +244,6 @@ impl SgTape {
/// Lock/Unlock drive door
pub fn set_medium_removal(&mut self, allow: bool) -> Result<(), ScsiError> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
@ -279,13 +261,13 @@ impl SgTape {
}
pub fn rewind(&mut self) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
cmd.extend(&[0x01, 0, 0, 0, 0, 0]); // REWIND
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("rewind failed - {}", err))?;
Ok(())
@ -303,7 +285,8 @@ impl SgTape {
self.rewind()?;
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
sg_raw.do_command(SPACE_ONE_FILEMARK)
sg_raw
.do_command(SPACE_ONE_FILEMARK)
.map_err(|err| format_err!("locate file {} (space) failed - {}", position, err))?;
return Ok(());
}
@ -334,20 +317,22 @@ impl SgTape {
cmd.extend(&fixed_position.to_be_bytes());
cmd.extend(&[0, 0, 0, 0]);
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("locate file {} failed - {}", position, err))?;
// LOCATE always position at the BOT side of the filemark, so
// we need to move to other side of filemark
sg_raw.do_command(SPACE_ONE_FILEMARK)
sg_raw
.do_command(SPACE_ONE_FILEMARK)
.map_err(|err| format_err!("locate file {} (space) failed - {}", position, err))?;
if self.locate_offset.is_none() {
// check if we landed at correct position
let current_file = self.current_file_number()?;
if current_file != position {
let offset: i64 =
i64::try_from((position as i128) - (current_file as i128)).map_err(|err| {
let offset: i64 = i64::try_from((position as i128) - (current_file as i128))
.map_err(|err| {
format_err!(
"locate_file: offset between {} and {} invalid: {}",
position,
@ -370,7 +355,6 @@ impl SgTape {
}
pub fn position(&mut self) -> Result<ReadPositionLongPage, Error> {
let expected_size = std::mem::size_of::<ReadPositionLongPage>();
let mut sg_raw = SgRaw::new(&mut self.file, 32)?;
@ -381,12 +365,17 @@ impl SgTape {
// reference manual.
cmd.extend(&[0x34, 0x06, 0, 0, 0, 0, 0, 0, 0, 0]); // READ POSITION LONG FORM
let data = sg_raw.do_command(&cmd)
let data = sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("read position failed - {}", err))?;
let page = proxmox_lang::try_block!({
if data.len() != expected_size {
bail!("got unexpected data len ({} != {}", data.len(), expected_size);
bail!(
"got unexpected data len ({} != {}",
data.len(),
expected_size
);
}
let mut reader = data;
@ -394,7 +383,8 @@ impl SgTape {
let page: ReadPositionLongPage = unsafe { reader.read_be_value()? };
Ok(page)
}).map_err(|err: Error| format_err!("decode position page failed - {}", err))?;
})
.map_err(|err: Error| format_err!("decode position page failed - {}", err))?;
if page.partition_number != 0 {
bail!("detecthed partitioned tape - not supported");
@ -410,7 +400,6 @@ impl SgTape {
/// Check if we are positioned after a filemark (or BOT)
pub fn check_filemark(&mut self) -> Result<bool, Error> {
let pos = self.position()?;
if pos.logical_object_number == 0 {
// at BOT, Ok (no filemark required)
@ -421,13 +410,24 @@ impl SgTape {
match self.space(-1, true) {
Ok(_) => {
self.space(1, true) // move back to end
.map_err(|err| format_err!("check_filemark failed (space forward) - {}", err))?;
.map_err(|err| {
format_err!("check_filemark failed (space forward) - {}", err)
})?;
Ok(false)
}
Err(ScsiError::Sense(SenseInfo { sense_key: 0, asc: 0, ascq: 1 })) => {
Err(ScsiError::Sense(SenseInfo {
sense_key: 0,
asc: 0,
ascq: 1,
})) => {
// Filemark detected - good
self.space(1, false) // move to EOT side of filemark
.map_err(|err| format_err!("check_filemark failed (move to EOT side of filemark) - {}", err))?;
.map_err(|err| {
format_err!(
"check_filemark failed (move to EOT side of filemark) - {}",
err
)
})?;
Ok(true)
}
Err(err) => {
@ -442,7 +442,8 @@ impl SgTape {
let mut cmd = Vec::new();
cmd.extend(&[0x11, 0x03, 0, 0, 0, 0]); // SPACE(6) move to EOD
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("move to EOD failed - {}", err))?;
if write_missing_eof && !self.check_filemark()? {
@ -503,7 +504,8 @@ impl SgTape {
let mut cmd = Vec::new();
cmd.extend(&[0x1B, 0, 0, 0, 0, 0]); // LODA/UNLOAD HOLD=0, LOAD=0
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("eject failed - {}", err))?;
Ok(())
@ -515,24 +517,21 @@ impl SgTape {
let mut cmd = Vec::new();
cmd.extend(&[0x1B, 0, 0, 0, 0b0000_0001, 0]); // LODA/UNLOAD HOLD=0, LOAD=1
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("load media failed - {}", err))?;
Ok(())
}
pub fn write_filemarks(
&mut self,
count: usize,
immediate: bool,
) -> Result<(), std::io::Error> {
pub fn write_filemarks(&mut self, count: usize, immediate: bool) -> Result<(), std::io::Error> {
if count > 255 {
proxmox_lang::io_bail!("write_filemarks failed: got strange count '{}'", count);
}
let mut sg_raw = SgRaw::new(&mut self.file, 16)
.map_err(|err| proxmox_lang::io_format_err!("write_filemarks failed (alloc) - {}", err))?;
let mut sg_raw = SgRaw::new(&mut self.file, 16).map_err(|err| {
proxmox_lang::io_format_err!("write_filemarks failed (alloc) - {}", err)
})?;
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
@ -547,9 +546,11 @@ impl SgTape {
match sg_raw.do_command(&cmd) {
Ok(_) => { /* OK */ }
Err(ScsiError::Sense(SenseInfo { sense_key: 0, asc: 0, ascq: 2 })) => {
/* LEOM - ignore */
}
Err(ScsiError::Sense(SenseInfo {
sense_key: 0,
asc: 0,
ascq: 2,
})) => { /* LEOM - ignore */ }
Err(err) => {
proxmox_lang::io_bail!("write filemark failed - {}", err);
}
@ -565,7 +566,6 @@ impl SgTape {
}
pub fn test_unit_ready(&mut self) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(&mut self.file, 16)?;
sg_raw.set_timeout(30); // use short timeout
let mut cmd = Vec::new();
@ -580,7 +580,6 @@ impl SgTape {
}
pub fn wait_until_ready(&mut self) -> Result<(), Error> {
let start = SystemTime::now();
let max_wait = std::time::Duration::new(Self::SCSI_TAPE_DEFAULT_TIMEOUT as u64, 0);
@ -612,11 +611,7 @@ impl SgTape {
read_volume_statistics(&mut self.file)
}
pub fn set_encryption(
&mut self,
key: Option<[u8; 32]>,
) -> Result<(), Error> {
pub fn set_encryption(&mut self, key: Option<[u8; 32]>) -> Result<(), Error> {
self.encryption_key_loaded = key.is_some();
set_encryption(&mut self.file, key)
@ -626,15 +621,13 @@ impl SgTape {
//
// Returns true if the drive reached the Logical End Of Media (early warning)
fn write_block(&mut self, data: &[u8]) -> Result<bool, std::io::Error> {
let transfer_len = data.len();
if transfer_len > 0x800000 {
proxmox_lang::io_bail!("write failed - data too large");
}
let mut sg_raw = SgRaw::new(&mut self.file, 0)
.unwrap(); // cannot fail with size 0
let mut sg_raw = SgRaw::new(&mut self.file, 0).unwrap(); // cannot fail with size 0
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
@ -649,8 +642,12 @@ impl SgTape {
//println!("WRITE {:?}", data);
match sg_raw.do_out_command(&cmd, data) {
Ok(()) => { Ok(false) }
Err(ScsiError::Sense(SenseInfo { sense_key: 0, asc: 0, ascq: 2 })) => {
Ok(()) => Ok(false),
Err(ScsiError::Sense(SenseInfo {
sense_key: 0,
asc: 0,
ascq: 2,
})) => {
Ok(true) // LEOM
}
Err(err) => {
@ -663,13 +660,12 @@ impl SgTape {
let transfer_len = buffer.len();
if transfer_len > 0xFFFFFF {
return Err(BlockReadError::Error(
proxmox_lang::io_format_err!("read failed - buffer too large")
));
return Err(BlockReadError::Error(proxmox_lang::io_format_err!(
"read failed - buffer too large"
)));
}
let mut sg_raw = SgRaw::new(&mut self.file, 0)
.unwrap(); // cannot fail with size 0
let mut sg_raw = SgRaw::new(&mut self.file, 0).unwrap(); // cannot fail with size 0
sg_raw.set_timeout(Self::SCSI_TAPE_DEFAULT_TIMEOUT);
let mut cmd = Vec::new();
@ -683,23 +679,34 @@ impl SgTape {
let data = match sg_raw.do_in_command(&cmd, buffer) {
Ok(data) => data,
Err(ScsiError::Sense(SenseInfo { sense_key: 0, asc: 0, ascq: 1 })) => {
Err(ScsiError::Sense(SenseInfo {
sense_key: 0,
asc: 0,
ascq: 1,
})) => {
return Err(BlockReadError::EndOfFile);
}
Err(ScsiError::Sense(SenseInfo { sense_key: 8, asc: 0, ascq: 5 })) => {
Err(ScsiError::Sense(SenseInfo {
sense_key: 8,
asc: 0,
ascq: 5,
})) => {
return Err(BlockReadError::EndOfStream);
}
Err(err) => {
return Err(BlockReadError::Error(
proxmox_lang::io_format_err!("read failed - {}", err)
));
return Err(BlockReadError::Error(proxmox_lang::io_format_err!(
"read failed - {}",
err
)));
}
};
if data.len() != transfer_len {
return Err(BlockReadError::Error(
proxmox_lang::io_format_err!("read failed - unexpected block len ({} != {})", data.len(), buffer.len())
));
return Err(BlockReadError::Error(proxmox_lang::io_format_err!(
"read failed - unexpected block len ({} != {})",
data.len(),
buffer.len()
)));
}
Ok(transfer_len)
@ -717,7 +724,6 @@ impl SgTape {
/// Set all options we need/want
pub fn set_default_options(&mut self) -> Result<(), Error> {
let compression = Some(true);
let block_length = Some(0); // variable length mode
let buffer_mode = Some(true); // Always use drive buffer
@ -734,7 +740,6 @@ impl SgTape {
block_length: Option<u32>,
buffer_mode: Option<bool>,
) -> Result<(), Error> {
// Note: Read/Modify/Write
let (mut head, mut block_descriptor, mut page) = self.read_compression_page()?;
@ -776,7 +781,8 @@ impl SgTape {
buffer[..data.len()].copy_from_slice(&data[..]);
sg_raw.do_out_command(&cmd, &buffer[..data.len()])
sg_raw
.do_out_command(&cmd, &buffer[..data.len()])
.map_err(|err| format_err!("set drive options failed - {}", err))?;
Ok(())
@ -784,10 +790,16 @@ impl SgTape {
fn read_medium_configuration_page(
&mut self,
) -> Result<(ModeParameterHeader, ModeBlockDescriptor, MediumConfigurationModePage), Error> {
let (head, block_descriptor, page): (_,_, MediumConfigurationModePage)
= scsi_mode_sense(&mut self.file, false, 0x1d, 0)?;
) -> Result<
(
ModeParameterHeader,
ModeBlockDescriptor,
MediumConfigurationModePage,
),
Error,
> {
let (head, block_descriptor, page): (_, _, MediumConfigurationModePage) =
scsi_mode_sense(&mut self.file, false, 0x1d, 0)?;
proxmox_lang::try_block!({
if (page.page_code & 0b0011_1111) != 0x1d {
@ -803,15 +815,22 @@ impl SgTape {
};
Ok((head, block_descriptor, page))
}).map_err(|err| format_err!("read_medium_configuration failed - {}", err))
})
.map_err(|err| format_err!("read_medium_configuration failed - {}", err))
}
fn read_compression_page(
&mut self,
) -> Result<(ModeParameterHeader, ModeBlockDescriptor, DataCompressionModePage), Error> {
let (head, block_descriptor, page): (_,_, DataCompressionModePage)
= scsi_mode_sense(&mut self.file, false, 0x0f, 0)?;
) -> Result<
(
ModeParameterHeader,
ModeBlockDescriptor,
DataCompressionModePage,
),
Error,
> {
let (head, block_descriptor, page): (_, _, DataCompressionModePage) =
scsi_mode_sense(&mut self.file, false, 0x0f, 0)?;
proxmox_lang::try_block!({
if (page.page_code & 0b0011_1111) != 0x0f {
@ -827,7 +846,8 @@ impl SgTape {
};
Ok((head, block_descriptor, page))
}).map_err(|err| format_err!("read_compression_page failed: {}", err))
})
.map_err(|err| format_err!("read_compression_page failed: {}", err))
}
/// Read drive options/status
@ -835,7 +855,6 @@ impl SgTape {
/// We read the drive compression page, including the
/// block_descriptor. This is all information we need for now.
pub fn read_drive_status(&mut self) -> Result<LtoTapeStatus, Error> {
// We do a Request Sense, but ignore the result.
// This clears deferred error or media changed events.
let _ = scsi_request_sense(&mut self.file);
@ -853,10 +872,10 @@ impl SgTape {
/// Get Tape and Media status
pub fn get_drive_and_media_status(&mut self) -> Result<LtoDriveAndMediaStatus, Error> {
let drive_status = self.read_drive_status()?;
let alert_flags = self.tape_alert_flags()
let alert_flags = self
.tape_alert_flags()
.map(|flags| format!("{:?}", flags))
.ok();
@ -881,7 +900,6 @@ impl SgTape {
};
if self.test_unit_ready().is_ok() {
if drive_status.write_protect {
status.write_protect = Some(drive_status.write_protect);
}
@ -892,7 +910,6 @@ impl SgTape {
status.block_number = Some(position.logical_object_number);
if let Ok(mam) = self.cartridge_memory() {
let usage = mam_extract_media_usage(&mam)?;
status.manufactured = Some(usage.manufactured);
@ -900,7 +917,6 @@ impl SgTape {
status.bytes_written = Some(usage.bytes_written);
if let Ok(volume_stats) = self.volume_statistics() {
let passes = std::cmp::max(
volume_stats.beginning_of_medium_passes,
volume_stats.middle_of_tape_passes,
@ -920,7 +936,6 @@ impl SgTape {
Ok(status)
}
}
impl Drop for SgTape {
@ -932,31 +947,33 @@ impl Drop for SgTape {
}
}
pub struct SgTapeReader<'a> {
sg_tape: &'a mut SgTape,
end_of_file: bool,
}
impl<'a> SgTapeReader<'a> {
pub fn new(sg_tape: &'a mut SgTape) -> Self {
Self { sg_tape, end_of_file: false, }
Self {
sg_tape,
end_of_file: false,
}
}
}
impl<'a> BlockRead for SgTapeReader<'a> {
fn read_block(&mut self, buffer: &mut [u8]) -> Result<usize, BlockReadError> {
if self.end_of_file {
return Err(BlockReadError::Error(proxmox_lang::io_format_err!("detected read after EOF!")));
return Err(BlockReadError::Error(proxmox_lang::io_format_err!(
"detected read after EOF!"
)));
}
match self.sg_tape.read_block(buffer) {
Ok(usize) => Ok(usize),
Err(BlockReadError::EndOfFile) => {
self.end_of_file = true;
Err(BlockReadError::EndOfFile)
},
}
Err(err) => Err(err),
}
}
@ -968,14 +985,15 @@ pub struct SgTapeWriter<'a> {
}
impl<'a> SgTapeWriter<'a> {
pub fn new(sg_tape: &'a mut SgTape) -> Self {
Self { sg_tape, _leom_sent: false }
Self {
sg_tape,
_leom_sent: false,
}
}
}
impl<'a> BlockWrite for SgTapeWriter<'a> {
fn write_block(&mut self, buffer: &[u8]) -> Result<bool, std::io::Error> {
self.sg_tape.write_block(buffer)
}

77
pbs-tape/src/sg_tape/encryption.rs
View File

@ -1,20 +1,17 @@
use std::os::unix::prelude::AsRawFd;
use std::io::Write;
use std::os::unix::prelude::AsRawFd;
use anyhow::{bail, format_err, Error};
use endian_trait::Endian;
use proxmox_io::{ReadExt, WriteExt};
use crate::sgutils2::{SgRaw, alloc_page_aligned_buffer};
use crate::sgutils2::{alloc_page_aligned_buffer, SgRaw};
/// Test if drive supports hardware encryption
///
/// We search for AES_GCM algorithm with 256bits key.
pub fn has_encryption<F: AsRawFd>(
file: &mut F,
) -> bool {
pub fn has_encryption<F: AsRawFd>(file: &mut F) -> bool {
let data = match sg_spin_data_encryption_caps(file) {
Ok(data) => data,
Err(_) => return false,
@ -25,11 +22,7 @@ pub fn has_encryption<F: AsRawFd>(
/// Set or clear encryption key
///
/// We always use mixed mode,
pub fn set_encryption<F: AsRawFd>(
file: &mut F,
key: Option<[u8; 32]>,
) -> Result<(), Error> {
pub fn set_encryption<F: AsRawFd>(file: &mut F, key: Option<[u8; 32]>) -> Result<(), Error> {
let data = match sg_spin_data_encryption_caps(file) {
Ok(data) => data,
Err(_) if key.is_none() => {
@ -85,7 +78,6 @@ fn sg_spout_set_encryption<F: AsRawFd>(
algorythm_index: u8,
key: Option<[u8; 32]>,
) -> Result<(), Error> {
let mut sg_raw = SgRaw::new(file, 0)?;
let mut outbuf_len = std::mem::size_of::<SspSetDataEncryptionPage>();
@ -106,7 +98,11 @@ fn sg_spout_set_encryption<F: AsRawFd>(
algorythm_index,
key_format: 0,
reserved: [0u8; 8],
key_len: if let Some(ref key) = key { key.len() as u16 } else { 0 },
key_len: if let Some(ref key) = key {
key.len() as u16
} else {
0
},
};
let mut writer = &mut outbuf[..];
@ -119,20 +115,21 @@ fn sg_spout_set_encryption<F: AsRawFd>(
let mut cmd = Vec::new();
cmd.push(0xB5); // SECURITY PROTOCOL IN (SPOUT)
cmd.push(0x20); // Tape Data Encryption Page
cmd.push(0);cmd.push(0x10); // Set Data Encryption page
cmd.push(0);
cmd.push(0x10); // Set Data Encryption page
cmd.push(0);
cmd.push(0);
cmd.extend(&(outbuf_len as u32).to_be_bytes()); // data out len
cmd.push(0);
cmd.push(0);
sg_raw.do_out_command(&cmd, &outbuf)
sg_raw
.do_out_command(&cmd, &outbuf)
.map_err(|err| format_err!("set data encryption SPOUT(20h[0010h]) failed - {}", err))
}
// Warning: this blocks and fails if there is no media loaded
fn sg_spin_data_encryption_status<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let allocation_len: u32 = 8192 + 4;
let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
@ -140,21 +137,27 @@ fn sg_spin_data_encryption_status<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, E
let mut cmd = Vec::new();
cmd.push(0xA2); // SECURITY PROTOCOL IN (SPIN)
cmd.push(0x20); // Tape Data Encryption Page
cmd.push(0);cmd.push(0x20); // Data Encryption Status page
cmd.push(0);
cmd.push(0x20); // Data Encryption Status page
cmd.push(0);
cmd.push(0);
cmd.extend(&allocation_len.to_be_bytes());
cmd.push(0);
cmd.push(0);
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("read data encryption status SPIN(20h[0020h]) failed - {}", err))
sg_raw
.do_command(&cmd)
.map_err(|err| {
format_err!(
"read data encryption status SPIN(20h[0020h]) failed - {}",
err
)
})
.map(|v| v.to_vec())
}
// Warning: this blocks and fails if there is no media loaded
fn sg_spin_data_encryption_caps<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let allocation_len: u32 = 8192 + 4;
let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
@ -162,15 +165,22 @@ fn sg_spin_data_encryption_caps<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Err
let mut cmd = Vec::new();
cmd.push(0xA2); // SECURITY PROTOCOL IN (SPIN)
cmd.push(0x20); // Tape Data Encryption Page
cmd.push(0);cmd.push(0x10); // Data Encryption Capabilities page
cmd.push(0);
cmd.push(0x10); // Data Encryption Capabilities page
cmd.push(0);
cmd.push(0);
cmd.extend(&allocation_len.to_be_bytes());
cmd.push(0);
cmd.push(0);
sg_raw.do_command(&cmd)
.map_err(|err| format_err!("read data encryption caps SPIN(20h[0010h]) failed - {}", err))
sg_raw
.do_command(&cmd)
.map_err(|err| {
format_err!(
"read data encryption caps SPIN(20h[0010h]) failed - {}",
err
)
})
.map(|v| v.to_vec())
}
@ -215,7 +225,6 @@ struct SspDataEncryptionAlgorithmDescriptor {
// Returns the algorythm_index for AES-GCM
fn decode_spin_data_encryption_caps(data: &[u8]) -> Result<u8, Error> {
proxmox_lang::try_block!({
let mut reader = data;
let _page: SspDataEncryptionCapabilityPage = unsafe { reader.read_be_value()? };
@ -223,9 +232,10 @@ fn decode_spin_data_encryption_caps(data: &[u8]) -> Result<u8, Error> {
let mut aes_gcm_index = None;
loop {
if reader.is_empty() { break; };
let desc: SspDataEncryptionAlgorithmDescriptor =
unsafe { reader.read_be_value()? };
if reader.is_empty() {
break;
};
let desc: SspDataEncryptionAlgorithmDescriptor = unsafe { reader.read_be_value()? };
if desc.descriptor_len != 0x14 {
bail!("got wrong key descriptor len");
}
@ -245,8 +255,8 @@ fn decode_spin_data_encryption_caps(data: &[u8]) -> Result<u8, Error> {
Some(index) => Ok(index),
None => bail!("drive does not support AES-GCM encryption"),
}
}).map_err(|err: Error| format_err!("decode data encryption caps page failed - {}", err))
})
.map_err(|err: Error| format_err!("decode data encryption caps page failed - {}", err))
}
#[derive(Endian)]
@ -266,7 +276,6 @@ struct SspDataEncryptionStatusPage {
}
fn decode_spin_data_encryption_status(data: &[u8]) -> Result<DataEncryptionStatus, Error> {
proxmox_lang::try_block!({
let mut reader = data;
let page: SspDataEncryptionStatusPage = unsafe { reader.read_be_value()? };
@ -283,11 +292,9 @@ fn decode_spin_data_encryption_status(data: &[u8]) -> Result<DataEncryptionStatu
_ => bail!("unknown encryption mode"),
};
let status = DataEncryptionStatus {
mode,
};
let status = DataEncryptionStatus { mode };
Ok(status)
}).map_err(|err| format_err!("decode data encryption status page failed - {}", err))
})
.map_err(|err| format_err!("decode data encryption status page failed - {}", err))
}

173
pbs-tape/src/sg_tape/mam.rs
View File

@ -31,7 +31,12 @@ enum MamFormat {
}
static MAM_ATTRIBUTES: &[(u16, u16, MamFormat, &str)] = &[
(0x00_00, 8, MamFormat::DEC, "Remaining Capacity In Partition"),
(
0x00_00,
8,
MamFormat::DEC,
"Remaining Capacity In Partition",
),
(0x00_01, 8, MamFormat::DEC, "Maximum Capacity In Partition"),
(0x00_02, 8, MamFormat::DEC, "Tapealert Flags"),
(0x00_03, 8, MamFormat::DEC, "Load Count"),
@ -40,19 +45,66 @@ static MAM_ATTRIBUTES: &[ (u16, u16, MamFormat, &str) ] = &[
(0x00_06, 1, MamFormat::BINARY, "Formatted Density Code"),
(0x00_07, 2, MamFormat::DEC, "Initialization Count"),
(0x00_09, 4, MamFormat::BINARY, "Volume Change Reference"),
(0x02_0A, 40, MamFormat::ASCII, "Device Vendor/Serial Number at Last Load"),
(0x02_0B, 40, MamFormat::ASCII, "Device Vendor/Serial Number at Load-1"),
(0x02_0C, 40, MamFormat::ASCII, "Device Vendor/Serial Number at Load-2"),
(0x02_0D, 40, MamFormat::ASCII, "Device Vendor/Serial Number at Load-3"),
(0x02_20, 8, MamFormat::DEC, "Total MBytes Written in Medium Life"),
(0x02_21, 8, MamFormat::DEC, "Total MBytes Read In Medium Life"),
(0x02_22, 8, MamFormat::DEC, "Total MBytes Written in Current Load"),
(0x02_23, 8, MamFormat::DEC, "Total MBytes Read in Current/Last Load"),
(0x02_24, 8, MamFormat::BINARY, "Logical Position of First Encrypted Block"),
(0x02_25, 8, MamFormat::BINARY, "Logical Position of First Unencrypted Block After the First Encrypted Block"),
(
0x02_0A,
40,
MamFormat::ASCII,
"Device Vendor/Serial Number at Last Load",
),
(
0x02_0B,
40,
MamFormat::ASCII,
"Device Vendor/Serial Number at Load-1",
),
(
0x02_0C,
40,
MamFormat::ASCII,
"Device Vendor/Serial Number at Load-2",
),
(
0x02_0D,
40,
MamFormat::ASCII,
"Device Vendor/Serial Number at Load-3",
),
(
0x02_20,
8,
MamFormat::DEC,
"Total MBytes Written in Medium Life",
),
(
0x02_21,
8,
MamFormat::DEC,
"Total MBytes Read In Medium Life",
),
(
0x02_22,
8,
MamFormat::DEC,
"Total MBytes Written in Current Load",
),
(
0x02_23,
8,
MamFormat::DEC,
"Total MBytes Read in Current/Last Load",
),
(
0x02_24,
8,
MamFormat::BINARY,
"Logical Position of First Encrypted Block",
),
(
0x02_25,
8,
MamFormat::BINARY,
"Logical Position of First Unencrypted Block After the First Encrypted Block",
),
(0x04_00, 8, MamFormat::ASCII, "Medium Manufacturer"),
(0x04_01, 32, MamFormat::ASCII, "Medium Serial Number"),
(0x04_02, 4, MamFormat::DEC, "Medium Length"),
@ -64,24 +116,51 @@ static MAM_ATTRIBUTES: &[ (u16, u16, MamFormat, &str) ] = &[
(0x04_08, 1, MamFormat::BINARY, "Medium Type"),
(0x04_09, 2, MamFormat::BINARY, "Medium Type Information"),
(0x04_0B, 10, MamFormat::BINARY, "Supported Density Codes"),
(0x08_00, 8, MamFormat::ASCII, "Application Vendor"),
(0x08_01, 32, MamFormat::ASCII, "Application Name"),
(0x08_02, 8, MamFormat::ASCII, "Application Version"),
(0x08_03, 160, MamFormat::ASCII, "User Medium Text Label"),
(0x08_04, 12, MamFormat::ASCII, "Date And Time Last Written"),
(0x08_05, 1, MamFormat::BINARY, "Text Localization Identifier"),
(
0x08_05,
1,
MamFormat::BINARY,
"Text Localization Identifier",
),
(0x08_06, 32, MamFormat::ASCII, "Barcode"),
(0x08_07, 80, MamFormat::ASCII, "Owning Host Textual Name"),
(0x08_08, 160, MamFormat::ASCII, "Media Pool"),
(0x08_0B, 16, MamFormat::ASCII, "Application Format Version"),
(0x08_0C, 50, MamFormat::ASCII, "Volume Coherency Information"),
(0x08_20, 36, MamFormat::ASCII, "Medium Globally Unique Identifier"),
(0x08_21, 36, MamFormat::ASCII, "Media Pool Globally Unique Identifier"),
(0x10_00, 28, MamFormat::BINARY, "Unique Cartridge Identify (UCI)"),
(0x10_01, 24, MamFormat::BINARY, "Alternate Unique Cartridge Identify (Alt-UCI)"),
(
0x08_0C,
50,
MamFormat::ASCII,
"Volume Coherency Information",
),
(
0x08_20,
36,
MamFormat::ASCII,
"Medium Globally Unique Identifier",
),
(
0x08_21,
36,
MamFormat::ASCII,
"Media Pool Globally Unique Identifier",
),
(
0x10_00,
28,
MamFormat::BINARY,
"Unique Cartridge Identify (UCI)",
),
(
0x10_01,
24,
MamFormat::BINARY,
"Alternate Unique Cartridge Identify (Alt-UCI)",
),
];
lazy_static::lazy_static! {
@ -98,7 +177,6 @@ lazy_static::lazy_static!{
}
fn read_tape_mam<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let alloc_len: u32 = 32 * 1024;
let mut sg_raw = SgRaw::new(file, alloc_len as usize)?;
@ -108,30 +186,32 @@ fn read_tape_mam<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
cmd.extend(&alloc_len.to_be_bytes()); // alloc len
cmd.extend(&[0u8, 0u8]);
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("read cartidge memory failed - {}", err))
.map(|v| v.to_vec())
}
/// 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)?;
decode_mam_attributes(&data)
}
fn decode_mam_attributes(data: &[u8]) -> Result<Vec<MamAttribute>, Error> {
let mut reader = data;
let data_len: u32 = unsafe { reader.read_be_value()? };
let expected_len = data_len as usize;
if reader.len() < expected_len {
bail!("read_mam_attributes: got unexpected data len ({} != {})", 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];
@ -164,7 +244,8 @@ fn decode_mam_attributes(data: &[u8]) -> Result<Vec<MamAttribute>, Error> {
} else if info.1 == 4 {
format!("{}", u32::from_be_bytes(data[0..4].try_into()?))
} else if info.1 == 8 {
if head_id == 2 { // Tape Alert Flags
if head_id == 2 {
// Tape Alert Flags
let value = u64::from_be_bytes(data[0..8].try_into()?);
let flags = TapeAlertFlags::from_bits_truncate(value);
format!("{:?}", flags)
@ -174,7 +255,7 @@ fn decode_mam_attributes(data: &[u8]) -> Result<Vec<MamAttribute>, Error> {
} else {
unreachable!();
}
},
}
MamFormat::BINARY => hex::encode(&data),
};
list.push(MamAttribute {
@ -183,7 +264,10 @@ fn decode_mam_attributes(data: &[u8]) -> Result<Vec<MamAttribute>, Error> {
value,
});
} else {
eprintln!("read_mam_attributes: got starnge data len for id {:04X}", head_id);
eprintln!(
"read_mam_attributes: got starnge data len for id {:04X}",
head_id
);
}
} else {
// skip unknown IDs
@ -201,8 +285,11 @@ pub struct MediaUsageInfo {
/// Extract Media Usage Information from Cartridge Memory
pub fn mam_extract_media_usage(mam: &[MamAttribute]) -> Result<MediaUsageInfo, Error> {
let manufactured: i64 = match mam.iter().find(|v| v.id == 0x04_06).map(|v| v.value.clone()) {
let manufactured: i64 = match mam
.iter()
.find(|v| v.id == 0x04_06)
.map(|v| v.value.clone())
{
Some(date_str) => {
if date_str.len() != 8 {
bail!("unable to parse 'Medium Manufacture Date' - wrong length");
@ -222,15 +309,27 @@ pub fn mam_extract_media_usage(mam: &[MamAttribute]) -> Result<MediaUsageInfo, E
None => bail!("unable to read MAM 'Medium Manufacture Date'"),
};
let bytes_written: u64 = match mam.iter().find(|v| v.id == 0x02_20).map(|v| v.value.clone()) {
let bytes_written: u64 = match mam
.iter()
.find(|v| v.id == 0x02_20)
.map(|v| v.value.clone())
{
Some(read_str) => read_str.parse::<u64>()? * 1024 * 1024,
None => bail!("unable to read MAM 'Total MBytes Written In Medium Life'"),
};
let bytes_read: u64 = match mam.iter().find(|v| v.id == 0x02_21).map(|v| v.value.clone()) {
let bytes_read: u64 = match mam
.iter()
.find(|v| v.id == 0x02_21)
.map(|v| v.value.clone())
{
Some(read_str) => read_str.parse::<u64>()? * 1024 * 1024,
None => bail!("unable to read MAM 'Total MBytes Read In Medium Life'"),
};
Ok(MediaUsageInfo { manufactured, bytes_written, bytes_read })
Ok(MediaUsageInfo {
manufactured,
bytes_written,
bytes_read,
})
}

13
pbs-tape/src/sg_tape/report_density.rs
View File

@ -1,6 +1,6 @@
use anyhow::{bail, format_err, Error};
use std::io::Read;
use endian_trait::Endian;
use std::io::Read;
use std::os::unix::io::AsRawFd;
use proxmox_io::ReadExt;
@ -33,7 +33,8 @@ pub fn report_density<F: AsRawFd>(file: &mut F) -> Result<u8, Error> {
cmd.extend(&alloc_len.to_be_bytes()); // alloc len
cmd.push(0u8); // control byte
let data = sg_raw.do_command(&cmd)
let data = sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("report density failed - {}", err))?;
let mut max_density = 0u8;
@ -54,7 +55,9 @@ pub fn report_density<F: AsRawFd>(file: &mut F) -> Result<u8, Error> {
reader.read_exact(&mut reserved)?;
loop {
if reader.is_empty() { break; }
if reader.is_empty() {
break;
}
let block: DesnityDescriptorBlock = unsafe { reader.read_be_value()? };
if block.primary_density_code > max_density {
max_density = block.primary_density_code;
@ -62,8 +65,8 @@ pub fn report_density<F: AsRawFd>(file: &mut F) -> Result<u8, Error> {
}
Ok(())
}).map_err(|err| format_err!("decode report density failed - {}", err))?;
})
.map_err(|err| format_err!("decode report density failed - {}", err))?;
Ok(max_density)
}

57
pbs-tape/src/sg_tape/tape_alert_flags.rs
View File

@ -74,15 +74,12 @@ bitflags::bitflags!{
/// 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)?;
// Note: We cannjot use LP 2Eh TapeAlerts, because that clears flags on read.
@ -99,13 +96,13 @@ fn sg_read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error>
cmd.extend(&[2u8, 0u8]); // alloc len
cmd.push(0u8); // control byte
sg_raw.do_command(&cmd)
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_lang::try_block!({
if !((data[0] & 0x7f) == 0x12 && data[1] == 0) {
bail!("invalid response");
@ -136,30 +133,30 @@ fn decode_tape_alert_flags(data: &[u8]) -> Result<TapeAlertFlags, Error> {
value = value.reverse_bits();
Ok(TapeAlertFlags::from_bits_truncate(value))
}).map_err(|err| format_err!("decode tape alert flags failed - {}", err))
})
.map_err(|err| format_err!("decode tape alert flags failed - {}", err))
}
const CRITICAL_FLAG_MASK: u64 =
TapeAlertFlags::MEDIA.bits() |
TapeAlertFlags::WRITE_FAILURE.bits() |
TapeAlertFlags::READ_FAILURE.bits() |
TapeAlertFlags::WRITE_PROTECT.bits() |
TapeAlertFlags::UNRECOVERABLE_SNAPPED_TAPE.bits() |
TapeAlertFlags::FORCED_EJECT.bits() |
TapeAlertFlags::EXPIRED_CLEANING_MEDIA.bits() |
TapeAlertFlags::INVALID_CLEANING_TAPE.bits() |
TapeAlertFlags::HARDWARE_A.bits() |
TapeAlertFlags::HARDWARE_B.bits() |
TapeAlertFlags::EJECT_MEDIA.bits() |
TapeAlertFlags::PREDICTIVE_FAILURE.bits() |
TapeAlertFlags::LOADER_STRAY_TAPE.bits() |
TapeAlertFlags::LOADER_MAGAZINE.bits() |
TapeAlertFlags::TAPE_SYSTEM_AREA_WRITE_FAILURE.bits() |
TapeAlertFlags::TAPE_SYSTEM_AREA_READ_FAILURE.bits() |
TapeAlertFlags::NO_START_OF_DATA.bits() |
TapeAlertFlags::LOADING_FAILURE.bits() |
TapeAlertFlags::UNRECOVERABLE_UNLOAD_FAILURE.bits() |
TapeAlertFlags::AUTOMATION_INTERFACE_FAILURE.bits();
const CRITICAL_FLAG_MASK: u64 = TapeAlertFlags::MEDIA.bits()
| TapeAlertFlags::WRITE_FAILURE.bits()
| TapeAlertFlags::READ_FAILURE.bits()
| TapeAlertFlags::WRITE_PROTECT.bits()
| TapeAlertFlags::UNRECOVERABLE_SNAPPED_TAPE.bits()
| TapeAlertFlags::FORCED_EJECT.bits()
| TapeAlertFlags::EXPIRED_CLEANING_MEDIA.bits()
| TapeAlertFlags::INVALID_CLEANING_TAPE.bits()
| TapeAlertFlags::HARDWARE_A.bits()
| TapeAlertFlags::HARDWARE_B.bits()
| TapeAlertFlags::EJECT_MEDIA.bits()
| TapeAlertFlags::PREDICTIVE_FAILURE.bits()
| TapeAlertFlags::LOADER_STRAY_TAPE.bits()
| TapeAlertFlags::LOADER_MAGAZINE.bits()
| TapeAlertFlags::TAPE_SYSTEM_AREA_WRITE_FAILURE.bits()
| TapeAlertFlags::TAPE_SYSTEM_AREA_READ_FAILURE.bits()
| TapeAlertFlags::NO_START_OF_DATA.bits()
| TapeAlertFlags::LOADING_FAILURE.bits()
| TapeAlertFlags::UNRECOVERABLE_UNLOAD_FAILURE.bits()
| TapeAlertFlags::AUTOMATION_INTERFACE_FAILURE.bits();
/// Check if tape-alert-flags contains critial errors.
pub fn tape_alert_flags_critical(flags: TapeAlertFlags) -> bool {
@ -167,8 +164,7 @@ pub fn tape_alert_flags_critical(flags: TapeAlertFlags) -> bool {
}
const MEDIA_LIFE_MASK: u64 =
TapeAlertFlags::MEDIA_LIFE.bits() |
TapeAlertFlags::NEARING_MEDIA_LIFE.bits();
TapeAlertFlags::MEDIA_LIFE.bits() | TapeAlertFlags::NEARING_MEDIA_LIFE.bits();
/// Check if tape-alert-flags indicates media-life end
pub fn tape_alert_flags_media_life(flags: TapeAlertFlags) -> bool {
@ -176,8 +172,7 @@ pub fn tape_alert_flags_media_life(flags: TapeAlertFlags) -> bool {
}
const MEDIA_CLEAN_MASK: u64 =
TapeAlertFlags::CLEAN_NOW.bits() |
TapeAlertFlags::CLEAN_PERIODIC.bits();
TapeAlertFlags::CLEAN_NOW.bits() | TapeAlertFlags::CLEAN_PERIODIC.bits();
/// Check if tape-alert-flags indicates media cleaning request
pub fn tape_alert_flags_cleaning_request(flags: TapeAlertFlags) -> bool {

26
pbs-tape/src/sg_tape/volume_statistics.rs
View File

@ -17,14 +17,12 @@ use crate::sgutils2::SgRaw;
/// The Volume Statistics log page is included in Ultrium 5 and later
/// drives.
pub fn read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Lp17VolumeStatistics, Error> {
let data = sg_read_volume_statistics(file)?;
decode_volume_statistics(&data)
}
fn sg_read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let alloc_len: u16 = 8192;
let mut sg_raw = SgRaw::new(file, alloc_len as usize)?;
@ -39,7 +37,8 @@ fn sg_read_volume_statistics<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error>
cmd.extend(&alloc_len.to_be_bytes()); // alloc len
cmd.push(0u8); // control byte
sg_raw.do_command(&cmd)
sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("read tape volume statistics failed - {}", err))
.map(|v| v.to_vec())
}
@ -53,8 +52,6 @@ struct LpParameterHeader {
}
fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error> {
let read_be_counter = |reader: &mut &[u8], len: u8| {
let len = len as usize;
if len == 0 || len > 8 {
@ -107,8 +104,7 @@ fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error>
page_valid = true;
}
0x0001 => {
stat.volume_mounts =
read_be_counter(&mut reader, head.parameter_len)?;
stat.volume_mounts = read_be_counter(&mut reader, head.parameter_len)?;
}
0x0002 => {
stat.volume_datasets_written =
@ -131,8 +127,7 @@ fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error>
read_be_counter(&mut reader, head.parameter_len)?;
}
0x0007 => {
stat.volume_datasets_read =
read_be_counter(&mut reader, head.parameter_len)?;
stat.volume_datasets_read = read_be_counter(&mut reader, head.parameter_len)?;
}
0x0008 => {
stat.volume_recovered_read_errors =
@ -175,12 +170,10 @@ fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error>
read_be_counter(&mut reader, head.parameter_len)?;
}
0x0014 => {
stat.medium_mount_time =
read_be_counter(&mut reader, head.parameter_len)?;
stat.medium_mount_time = read_be_counter(&mut reader, head.parameter_len)?;
}
0x0015 => {
stat.medium_ready_time =
read_be_counter(&mut reader, head.parameter_len)?;
stat.medium_ready_time = read_be_counter(&mut reader, head.parameter_len)?;
}
0x0016 => {
stat.total_native_capacity =
@ -211,8 +204,7 @@ fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error>
read_be_counter(&mut reader, head.parameter_len)?;
}
0x0102 => {
stat.middle_of_tape_passes =
read_be_counter(&mut reader, head.parameter_len)?;
stat.middle_of_tape_passes = read_be_counter(&mut reader, head.parameter_len)?;
}
_ => {
reader.read_exact_allocated(head.parameter_len as usize)?;
@ -225,6 +217,6 @@ fn decode_volume_statistics(data: &[u8]) -> Result<Lp17VolumeStatistics, Error>
}
Ok(stat)
}).map_err(|err| format_err!("decode volume statistics failed - {}", err))
})
.map_err(|err| format_err!("decode volume statistics failed - {}", err))
}

193
pbs-tape/src/sgutils2.rs
View File

@ -25,9 +25,7 @@ pub struct SenseInfo {
}
impl std::fmt::Display for SenseInfo {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let sense_text = SENSE_KEY_DESCRIPTIONS
.get(self.sense_key as usize)
.map(|s| String::from(*s))
@ -58,7 +56,9 @@ impl From<std::io::Error> for ScsiError {
// Opaque wrapper for sg_pt_base
#[repr(C)]
struct SgPtBase { _private: [u8; 0] }
struct SgPtBase {
_private: [u8; 0],
}
#[repr(transparent)]
struct SgPt {
@ -233,7 +233,6 @@ pub struct ModeParameterHeader {
}
impl ModeParameterHeader {
pub fn buffer_mode(&self) -> u8 {
(self.flags3 & 0b0111_0000) >> 4
}
@ -262,12 +261,10 @@ pub struct ModeBlockDescriptor {
}
impl ModeBlockDescriptor {
pub fn block_length(&self) -> u32 {
((self.block_length[0] as u32) << 16) +
((self.block_length[1] as u32) << 8) +
(self.block_length[2] as u32)
((self.block_length[0] as u32) << 16)
+ ((self.block_length[1] as u32) << 8)
+ (self.block_length[2] as u32)
}
pub fn set_block_length(&mut self, length: u32) -> Result<(), Error> {
@ -295,50 +292,22 @@ pub const SCSI_PT_RESULT_OS_ERR:c_int = 4;
extern "C" {
#[allow(dead_code)]
fn scsi_pt_open_device(
device_name: * const c_char,
read_only: bool,
verbose: c_int,
) -> c_int;
fn scsi_pt_open_device(device_name: *const c_char, read_only: bool, verbose: c_int) -> c_int;
fn sg_is_scsi_cdb(
cdbp: *const u8,
clen: c_int,
) -> bool;
fn sg_is_scsi_cdb(cdbp: *const u8, clen: c_int) -> bool;
fn construct_scsi_pt_obj() -> *mut SgPtBase;
fn destruct_scsi_pt_obj(objp: *mut SgPtBase);
fn set_scsi_pt_data_in(
objp: *mut SgPtBase,
dxferp: *mut u8,
dxfer_ilen: c_int,
);
fn set_scsi_pt_data_in(objp: *mut SgPtBase, dxferp: *mut u8, dxfer_ilen: c_int);
fn set_scsi_pt_data_out(
objp: *mut SgPtBase,
dxferp: *const u8,
dxfer_olen: c_int,
);
fn set_scsi_pt_data_out(objp: *mut SgPtBase, dxferp: *const u8, dxfer_olen: c_int);
fn set_scsi_pt_cdb(
objp: *mut SgPtBase,
cdb: *const u8,
cdb_len: c_int,
);
fn set_scsi_pt_cdb(objp: *mut SgPtBase, cdb: *const u8, cdb_len: c_int);
fn set_scsi_pt_sense(
objp: *mut SgPtBase,
sense: *mut u8,
max_sense_len: c_int,
);
fn set_scsi_pt_sense(objp: *mut SgPtBase, sense: *mut u8, max_sense_len: c_int);
fn do_scsi_pt(
objp: *mut SgPtBase,
fd: c_int,
timeout_secs: c_int,
verbose: c_int,
) -> c_int;
fn do_scsi_pt(objp: *mut SgPtBase, fd: c_int, timeout_secs: c_int, verbose: c_int) -> c_int;
fn get_scsi_pt_resid(objp: *const SgPtBase) -> c_int;
@ -368,7 +337,6 @@ pub struct SgRaw<'a, F> {
/// Get the string associated with ASC/ASCQ values
pub fn get_asc_ascq_string(asc: u8, ascq: u8) -> String {
let mut buffer = [0u8; 1024];
let res = unsafe {
sg_get_asc_ascq_str(
@ -380,13 +348,13 @@ pub fn get_asc_ascq_string(asc: u8, ascq: u8) -> String {
};
proxmox_lang::try_block!({
if res.is_null() { // just to be safe
if res.is_null() {
// just to be safe
bail!("unexpected NULL ptr");
}
Ok(unsafe { CStr::from_ptr(res) }.to_str()?.to_owned())
}).unwrap_or_else(|_err: Error| {
format!("ASC={:02x}x, ASCQ={:02x}x", asc, ascq)
})
.unwrap_or_else(|_err: Error| format!("ASC={:02x}x, ASCQ={:02x}x", asc, ascq))
}
/// Allocate a page aligned buffer
@ -405,12 +373,10 @@ pub fn alloc_page_aligned_buffer(buffer_size: usize) -> Result<Box<[u8]> , Error
}
impl<'a, F: AsRawFd> SgRaw<'a, F> {
/// Create a new instance to run commands
///
/// The file must be a handle to a SCSI device.
pub fn new(file: &'a mut F, buffer_size: usize) -> Result<Self, Error> {
let buffer;
if buffer_size > 0 {
@ -421,7 +387,12 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
let sense_buffer = [0u8; 32];
Ok(Self { file, buffer, sense_buffer, timeout: 0 })
Ok(Self {
file,
buffer,
sense_buffer,
timeout: 0,
})
}
/// Set the command timeout in seconds (0 means default (60 seconds))
@ -435,7 +406,6 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
// create new object with initialized data_in and sense buffer
fn create_scsi_pt_obj(&mut self) -> Result<SgPt, Error> {
let mut ptvp = SgPt::new()?;
if !self.buffer.is_empty() {
@ -460,18 +430,21 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
}
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_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()),
unknown => {
return Err(format_err!("do_scsi_pt failed: unknown error {}", unknown).into())
}
}
if res < 0 {
@ -490,7 +463,9 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
SCSI_PT_RESULT_STATUS => {
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());
return Err(
format_err!("unknown scsi error - status response {}", status).into(),
);
}
Ok(())
}
@ -521,28 +496,39 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
}
}
0x71 | 0x73 => {
return Err(format_err!("scsi command failed: received deferred Sense").into());
return Err(
format_err!("scsi command failed: received deferred Sense").into()
);
}
unknown => {
return Err(format_err!("scsi command failed: invalid Sense response code {:x}", unknown).into());
return Err(format_err!(
"scsi command failed: invalid Sense response code {:x}",
unknown
)
.into());
}
};
Err(ScsiError::Sense(sense))
}
SCSI_PT_RESULT_TRANSPORT_ERR => return Err(format_err!("scsi command failed: transport error").into()),
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()),
unknown => {
return Err(
format_err!("scsi command failed: unknown result category {}", unknown).into(),
)
}
}
}
/// Run the specified RAW SCSI command
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) } {
return Err(format_err!("no valid SCSI command").into());
}
@ -553,19 +539,15 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
let mut ptvp = self.create_scsi_pt_obj()?;
unsafe {
set_scsi_pt_cdb(
ptvp.as_mut_ptr(),
cmd.as_ptr(),
cmd.len() as c_int,
)
};
unsafe { set_scsi_pt_cdb(ptvp.as_mut_ptr(), cmd.as_ptr(), cmd.len() as c_int) };
self.do_scsi_pt_checked(&mut ptvp)?;
let resid = unsafe { get_scsi_pt_resid(ptvp.as_ptr()) } as usize;
if resid > self.buffer.len() {
return Err(format_err!("do_scsi_pt failed - got strange resid (value too big)").into());
return Err(
format_err!("do_scsi_pt failed - got strange resid (value too big)").into(),
);
}
let data_len = self.buffer.len() - resid;
@ -573,8 +555,11 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
}
/// Run the specified RAW SCSI command, use data as input buffer
pub fn do_in_command<'b>(&mut self, cmd: &[u8], data: &'b mut [u8]) -> Result<&'b [u8], ScsiError> {
pub fn do_in_command<'b>(
&mut self,
cmd: &[u8],
data: &'b mut [u8],
) -> Result<&'b [u8], ScsiError> {
if !unsafe { sg_is_scsi_cdb(cmd.as_ptr(), cmd.len() as c_int) } {
return Err(format_err!("no valid SCSI command").into());
}
@ -586,17 +571,9 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
let mut ptvp = self.create_scsi_pt_obj()?;
unsafe {
set_scsi_pt_data_in(
ptvp.as_mut_ptr(),
data.as_mut_ptr(),
data.len() as c_int,
);
set_scsi_pt_data_in(ptvp.as_mut_ptr(), data.as_mut_ptr(), data.len() as c_int);
set_scsi_pt_cdb(
ptvp.as_mut_ptr(),
cmd.as_ptr(),
cmd.len() as c_int,
);
set_scsi_pt_cdb(ptvp.as_mut_ptr(), cmd.as_ptr(), cmd.len() as c_int);
};
self.do_scsi_pt_checked(&mut ptvp)?;
@ -604,7 +581,9 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
let resid = unsafe { get_scsi_pt_resid(ptvp.as_ptr()) } as usize;
if resid > data.len() {
return Err(format_err!("do_scsi_pt failed - got strange resid (value too big)").into());
return Err(
format_err!("do_scsi_pt failed - got strange resid (value too big)").into(),
);
}
let data_len = data.len() - resid;
@ -615,7 +594,6 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
///
/// Note: use alloc_page_aligned_buffer to alloc data transfer buffer
pub fn do_out_command(&mut self, cmd: &[u8], data: &[u8]) -> Result<(), ScsiError> {
if !unsafe { sg_is_scsi_cdb(cmd.as_ptr(), cmd.len() as c_int) } {
return Err(format_err!("no valid SCSI command").into());
}
@ -628,17 +606,9 @@ impl <'a, F: AsRawFd> SgRaw<'a, F> {
let mut ptvp = self.create_scsi_pt_obj()?;
unsafe {
set_scsi_pt_data_out(
ptvp.as_mut_ptr(),
data.as_ptr(),
data.len() as c_int,
);
set_scsi_pt_data_out(ptvp.as_mut_ptr(), data.as_ptr(), data.len() as c_int);
set_scsi_pt_cdb(
ptvp.as_mut_ptr(),
cmd.as_ptr(),
cmd.len() as c_int,
);
set_scsi_pt_cdb(ptvp.as_mut_ptr(), cmd.as_ptr(), cmd.len() as c_int);
};
self.do_scsi_pt_checked(&mut ptvp)?;
@ -660,10 +630,7 @@ pub fn scsi_ascii_to_string(data: &[u8]) -> String {
/// Read SCSI Inquiry page
///
/// Returns Product/Vendor/Revision and device type.
pub fn scsi_inquiry<F: AsRawFd>(
file: &mut F,
) -> Result<InquiryInfo, Error> {
pub fn scsi_inquiry<F: AsRawFd>(file: &mut F) -> Result<InquiryInfo, Error> {
let allocation_len: u8 = std::mem::size_of::<InquiryPage>() as u8;
let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
@ -672,7 +639,8 @@ pub fn scsi_inquiry<F: AsRawFd>(
let mut cmd = Vec::new();
cmd.extend(&[0x12, 0, 0, 0, allocation_len, 0]); // INQUIRY
let data = sg_raw.do_command(&cmd)
let data = sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("SCSI inquiry failed - {}", err))?;
proxmox_lang::try_block!({
@ -691,7 +659,8 @@ pub fn scsi_inquiry<F: AsRawFd>(
};
Ok(info)
}).map_err(|err: Error| format_err!("decode inquiry page failed - {}", err))
})
.map_err(|err: Error| format_err!("decode inquiry page failed - {}", err))
}
/// Run SCSI Mode Sense
@ -703,7 +672,6 @@ pub fn scsi_mode_sense<F: AsRawFd, P: Endian>(
page_code: u8,
sub_page_code: u8,
) -> Result<(ModeParameterHeader, Option<ModeBlockDescriptor>, P), Error> {
let allocation_len: u16 = 4096;
let mut sg_raw = SgRaw::new(file, allocation_len as usize)?;
@ -721,7 +689,8 @@ pub fn scsi_mode_sense<F: AsRawFd, P: Endian>(
cmd.extend(&allocation_len.to_be_bytes()); // allocation len
cmd.push(0); //control
let data = sg_raw.do_command(&cmd)
let data = sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("mode sense failed - {}", err))?;
proxmox_lang::try_block!({
@ -731,7 +700,11 @@ pub fn scsi_mode_sense<F: AsRawFd, P: Endian>(
let expected_len = head.mode_data_len as usize + 2;
if data.len() < expected_len {
bail!("wrong mode_data_len: got {}, expected {}", data.len(), expected_len);
bail!(
"wrong mode_data_len: got {}, expected {}",
data.len(),
expected_len
);
} else if data.len() > expected_len {
// Note: Some hh7 drives returns the allocation_length
// instead of real data_len
@ -758,14 +731,12 @@ pub fn scsi_mode_sense<F: AsRawFd, P: Endian>(
let page: P = unsafe { reader.read_be_value()? };
Ok((head, block_descriptor, page))
}).map_err(|err: Error| format_err!("decode mode sense failed - {}", err))
})
.map_err(|err: Error| format_err!("decode mode sense failed - {}", err))
}
/// Resuqest Sense
pub fn scsi_request_sense<F: AsRawFd>(
file: &mut F,
) -> Result<RequestSenseFixed, ScsiError> {
pub fn scsi_request_sense<F: AsRawFd>(file: &mut F) -> Result<RequestSenseFixed, ScsiError> {
// request 252 bytes, as mentioned in the Seagate SCSI reference
let allocation_len: u8 = 252;
@ -774,7 +745,8 @@ pub fn scsi_request_sense<F: AsRawFd>(
let mut cmd = Vec::new();
cmd.extend(&[0x03, 0, 0, 0, allocation_len, 0]); // REQUEST SENSE FIXED FORMAT
let data = sg_raw.do_command(&cmd)
let data = sg_raw
.do_command(&cmd)
.map_err(|err| format_err!("request sense failed - {}", err))?;
let sense = proxmox_lang::try_block!({
@ -793,7 +765,8 @@ pub fn scsi_request_sense<F: AsRawFd>(
let sense: RequestSenseFixed = unsafe { reader.read_be_value()? };
Ok(sense)
}).map_err(|err: Error| format_err!("decode request sense failed - {}", err))?;
})
.map_err(|err: Error| format_err!("decode request sense failed - {}", err))?;
Ok(sense)
}

10
pbs-tape/src/tape_write.rs
View File

@ -38,12 +38,16 @@ pub trait TapeWrite {
}
let header = header.to_le();
let res = self.write_all(unsafe { std::slice::from_raw_parts(
let res = self.write_all(unsafe {
std::slice::from_raw_parts(
&header as *const MediaContentHeader as *const u8,
std::mem::size_of::<MediaContentHeader>(),
)})?;
)
})?;
if data.is_empty() { return Ok(res); }
if data.is_empty() {
return Ok(res);
}
self.write_all(data)
}