326 lines
8.4 KiB
Rust
326 lines
8.4 KiB
Rust
#![allow(dead_code)]
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use anyhow::Result;
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use duct::{cmd, Expression};
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use std::fs::OpenOptions;
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use std::io::{Read, Write};
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use std::path::PathBuf;
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use std::str::from_utf8;
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use thinp::file_utils;
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use thinp::io_engine::*;
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pub mod cache_xml_generator;
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pub mod test_dir;
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pub mod thin_xml_generator;
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use crate::common::thin_xml_generator::{write_xml, SingleThinS};
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use test_dir::TestDir;
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//------------------------------------------
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// FIXME: write a macro to generate these commands
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#[macro_export]
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macro_rules! thin_check {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_check", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_restore {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_restore", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_dump {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_dump", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_rmap {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_rmap", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_repair {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_repair", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_delta {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_delta", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_metadata_pack {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_metadata_pack", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_metadata_unpack {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_metadata_unpack", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! cache_check {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/cache_check", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_generate_metadata {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_generate_metadata", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_generate_mappings {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_generate_mappings", args).stdout_capture().stderr_capture()
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}
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};
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}
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#[macro_export]
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macro_rules! thin_generate_damage {
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( $( $arg: expr ),* ) => {
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{
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use std::ffi::OsString;
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let args: &[OsString] = &[$( Into::<OsString>::into($arg) ),*];
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duct::cmd("bin/thin_generate_damage", args).stdout_capture().stderr_capture()
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}
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};
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}
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//------------------------------------------
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// Returns stderr, a non zero status must be returned
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pub fn run_fail(command: Expression) -> Result<String> {
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let output = command.stderr_capture().unchecked().run()?;
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assert!(!output.status.success());
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Ok(from_utf8(&output.stderr[0..]).unwrap().to_string())
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}
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pub fn mk_valid_xml(td: &mut TestDir) -> Result<PathBuf> {
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let xml = td.mk_path("meta.xml");
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let mut gen = SingleThinS::new(0, 1024, 2048, 2048);
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write_xml(&xml, &mut gen)?;
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Ok(xml)
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}
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pub fn mk_valid_md(td: &mut TestDir) -> Result<PathBuf> {
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let xml = td.mk_path("meta.xml");
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let md = td.mk_path("meta.bin");
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let mut gen = SingleThinS::new(0, 1024, 20480, 20480);
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write_xml(&xml, &mut gen)?;
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let _file = file_utils::create_sized_file(&md, 4096 * 4096);
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thin_restore!("-i", xml, "-o", &md).run()?;
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Ok(md)
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}
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pub fn mk_zeroed_md(td: &mut TestDir) -> Result<PathBuf> {
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let md = td.mk_path("meta.bin");
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eprintln!("path = {:?}", md);
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let _file = file_utils::create_sized_file(&md, 1024 * 1024 * 16);
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Ok(md)
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}
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pub fn accepts_flag(flag: &str) -> Result<()> {
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let mut td = TestDir::new()?;
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let md = mk_valid_md(&mut td)?;
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thin_check!(flag, &md).run()?;
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Ok(())
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}
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pub fn superblock_all_zeroes(path: &PathBuf) -> Result<bool> {
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let mut input = OpenOptions::new().read(true).write(false).open(path)?;
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let mut buf = vec![0; 4096];
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input.read_exact(&mut buf[0..])?;
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for b in buf {
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if b != 0 {
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return Ok(false);
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}
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}
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Ok(true)
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}
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pub fn damage_superblock(path: &PathBuf) -> Result<()> {
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let mut output = OpenOptions::new().read(false).write(true).open(path)?;
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let buf = [0u8; 512];
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output.write_all(&buf)?;
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Ok(())
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}
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//-----------------------------------------------
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// FIXME: replace mk_valid_md with this?
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pub fn prep_metadata(td: &mut TestDir) -> Result<PathBuf> {
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let md = mk_zeroed_md(td)?;
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thin_generate_metadata!("-o", &md, "--format", "--nr-data-blocks", "102400").run()?;
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// Create a 2GB device
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thin_generate_metadata!("-o", &md, "--create-thin", "1").run()?;
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thin_generate_mappings!(
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"-o",
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&md,
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"--dev-id",
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"1",
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"--size",
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format!("{}", 1024 * 1024 * 2),
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"--rw=randwrite",
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"--seq-nr=16"
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)
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.run()?;
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// Take a few snapshots.
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let mut snap_id = 2;
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for _i in 0..10 {
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// take a snapshot
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thin_generate_metadata!(
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"-o",
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&md,
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"--create-snap",
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format!("{}", snap_id),
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"--origin",
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"1"
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)
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.run()?;
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// partially overwrite the origin (64MB)
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thin_generate_mappings!(
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"-o",
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&md,
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"--dev-id",
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format!("{}", 1),
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"--size",
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format!("{}", 1024 * 1024 * 2),
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"--io-size",
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format!("{}", 64 * 1024 * 2),
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"--rw=randwrite",
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"--seq-nr=16"
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)
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.run()?;
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snap_id += 1;
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}
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Ok(md)
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}
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pub fn set_needs_check(md: &PathBuf) -> Result<()> {
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thin_generate_metadata!("-o", &md, "--set-needs-check").run()?;
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Ok(())
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}
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pub fn generate_metadata_leaks(
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md: &PathBuf,
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nr_blocks: u64,
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expected: u32,
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actual: u32,
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) -> Result<()> {
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let output = thin_generate_damage!(
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"-o",
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&md,
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"--create-metadata-leaks",
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"--nr-blocks",
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format!("{}", nr_blocks),
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"--expected",
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format!("{}", expected),
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"--actual",
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format!("{}", actual)
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)
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.unchecked()
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.run()?;
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assert!(output.status.success());
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Ok(())
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}
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pub fn get_needs_check(md: &PathBuf) -> Result<bool> {
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use thinp::thin::superblock::*;
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let engine = SyncIoEngine::new(&md, 1, false)?;
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let sb = read_superblock(&engine, SUPERBLOCK_LOCATION)?;
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Ok(sb.flags.needs_check)
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}
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pub fn md5(md: &PathBuf) -> Result<String> {
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let output = cmd!("md5sum", "-b", &md).stdout_capture().run()?;
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let csum = std::str::from_utf8(&output.stdout[0..])?.to_string();
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let csum = csum.split_ascii_whitespace().next().unwrap().to_string();
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Ok(csum)
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}
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// This checksums the file before and after the thunk is run to
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// ensure it is unchanged.
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pub fn ensure_untouched<F>(p: &PathBuf, thunk: F) -> Result<()>
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where
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F: Fn() -> Result<()>,
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{
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let csum = md5(p)?;
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thunk()?;
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assert_eq!(csum, md5(p)?);
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Ok(())
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}
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