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.gitignore
View file @ 32aeff0c
# Compiled files
*.o
*.so
*.rlib
*.dll
# Executables
*.exe
# Generated by Cargo
Cargo.lock
/target/
# Images
*.bin
target
image.bin
image
.gitlab-ci.yml 0 → 100644
View file @ 32aeff0c
image: "redoxos/redoxer"
stages:
- build
- test
cache:
paths:
- target/
build:linux:
stage: build
script: cargo +nightly build --verbose
build:redox:
stage: build
script: redoxer build --verbose
test:linux:
stage: test
dependencies:
- build:linux
script: cargo +nightly test --verbose
test:redox:
stage: test
dependencies:
- build:redox
script: redoxer test --verbose
.travis.yml
View file @ 32aeff0c
sudo: required
language: rust
rust:
- nightly
sudo: false
os:
- linux
- osx
dist: trusty
before_install:
- if [ "$TRAVIS_OS_NAME" = "linux" ]; then
sudo apt-get install -qq pkg-config fuse libfuse-dev;
sudo modprobe fuse;
sudo chmod 666 /dev/fuse;
sudo chown root:$USER /etc/fuse.conf;
fi
- if [ "$TRAVIS_OS_NAME" = "osx" ]; then
brew update;
brew install Caskroom/cask/osxfuse;
fi
notifications:
email: false
Cargo.lock 0 → 100644
View file @ 32aeff0c
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"windows-targets",
]
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"windows_aarch64_msvc",
"windows_i686_gnu",
"windows_i686_gnullvm",
"windows_i686_msvc",
"windows_x86_64_gnu",
"windows_x86_64_gnullvm",
"windows_x86_64_msvc",
]
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name = "zerocopy-derive"
version = "0.7.35"
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checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
Cargo.toml
View file @ 32aeff0c
[package]
name = "redoxfs"
description = "The Redox Filesystem"
repository = "https://github.com/redox-os/redoxfs"
version = "0.1.0"
repository = "https://gitlab.redox-os.org/redox-os/redoxfs"
version = "0.6.9"
license-file = "LICENSE"
readme = "README.md"
authors = ["Jeremy Soller <jackpot51@gmail.com>"]
edition = "2021"
[lib]
name = "redoxfs"
......@@ -13,20 +14,63 @@ path = "src/lib.rs"
[[bin]]
name = "redoxfs"
path = "scheme/main.rs"
path = "src/bin/mount.rs"
doc = false
required-features = ["std"]
[[bin]]
name = "redoxfs-fuse"
path = "fuse/main.rs"
name = "redoxfs-ar"
path = "src/bin/ar.rs"
doc = false
required-features = ["std"]
[[bin]]
name = "redoxfs-utility"
path = "utility/main.rs"
name = "redoxfs-mkfs"
path = "src/bin/mkfs.rs"
doc = false
required-features = ["std"]
[dependencies]
spin = "*"
syscall = { git = "https://github.com/redox-os/syscall.git" }
aes = { version = "=0.7.5", default-features = false }
argon2 = { version = "0.4", default-features = false, features = ["alloc"] }
base64ct = { version = "1", default-features = false }
env_logger = { version = "0.11", optional = true }
endian-num = "0.1"
getrandom = { version = "0.2.5", optional = true }
libc = "0.2"
log = { version = "0.4.14", default-features = false, optional = true}
redox_syscall = { version = "0.5" }
range-tree = { version = "0.1", optional = true }
seahash = { version = "4.1.0", default-features = false }
termion = { version = "4", optional = true }
uuid = { version = "1.4", default-features = false }
redox-path = "0.3.0"
libredox = { version = "0.1.3", optional = true }
redox-scheme = { version = "0.2.1", optional = true }
[target.'cfg(unix)'.dependencies]
fuse = "0.2"
time = "*"
[features]
default = ["std", "log"]
force-soft = [
"aes/force-soft"
]
std = [
"env_logger",
"fuser",
"getrandom",
"libc",
"libredox",
"range-tree",
"termion",
"time",
"uuid/v4",
"redox_syscall/std",
"redox-scheme"
]
[target.'cfg(not(target_os = "redox"))'.dependencies]
fuser = { version = "0.14", optional = true }
libc = { version = "0.2", optional = true }
time = { version = "0.3", optional = true }
[lints.rust]
unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
DESIGN.md deleted 100644 → 0
View file @ 3a58139e
# RedoxFS Design Document
## Structures
### Header
The header is the entry point for the filesystem. When mounting a disk or image, it should be scanned for a block starting with the 8-byte signature, within the first megabyte:
```rust
"RedoxFS\0"
```
The header stores the filesystem version, disk identifier, disk size, root block pointer, and free block pointer.
```rust
#[repr(packed)]
pub struct Header {
pub signature: [u8; 8],
pub version: u64,
pub uuid: [u8; 16],
pub size: u64,
pub root: u64,
pub free: u64,
}
```
The root and free block pointers point to a Node that identifies
### Node
```rust
#[repr(packed)]
pub struct Node {
pub name: [u8; 256],
pub mode: u64,
pub next: u64,
pub extents: [Extent; 15],
}
```
Makefile 0 → 100644
View file @ 32aeff0c
UNAME := $(shell uname)
ifeq ($(UNAME),Darwin)
FUMOUNT=umount
else ifeq ($(UNAME),FreeBSD)
FUMOUNT=sudo umount
else
# Detect which version of the fusermount binary is available.
ifneq (, $(shell which fusermount3))
FUMOUNT=fusermount3 -u
else
FUMOUNT=fusermount -u
endif
endif
image.bin:
cargo build --release --bin redoxfs-mkfs
dd if=/dev/zero of=image.bin bs=1048576 count=1024
target/release/redoxfs-mkfs image.bin
mount: image.bin FORCE
mkdir -p image
cargo build --release --bin redoxfs
target/release/redoxfs image.bin image
unmount: FORCE
sync
-${FUMOUNT} image
rm -rf image
clean: FORCE
sync
-${FUMOUNT} image
rm -rf image image.bin
cargo clean
FORCE:
README.md
View file @ 32aeff0c
# redoxfs
The Redox Filesystem. Compatible with Redox and Linux.
# RedoxFS
This is the default filesystem of Redox OS inspired by [ZFS](https://docs.freebsd.org/en/books/handbook/zfs/) and adapted to a microkernel architecture.
(It's a replacement for [TFS](https://gitlab.redox-os.org/redox-os/tfs))
Current features:
- Compatible with Redox and Linux (FUSE)
- Copy-on-write
- Data/metadata checksums
- Transparent encryption
- Standard Unix file attributes
- File/directory size limit up to 193TiB (212TB)
- File/directory quantity limit up to 4 billion per 193TiB (2^32 - 1 = 4294967295)
- MIT licensed
- Disk encryption fully supported by the Redox bootloader, letting it load the kernel off an encrypted partition.
Being MIT licensed, RedoxFS can be bundled on GPL-licensed operating systems (Linux, for example).
### How to mount a partition
- Install RedoxFS
```sh
cargo install redoxfs
```
You can also build RedoxFS from this repository.
- Configure your storage device to allow rootless usage
If you are on Linux you need root permission to acess block devices (storage), but it's recommended to run RedoxFS as rootless.
To do that you need to configure your storage device permission to your user with the following command:
```sh
sudo setfacl -m u:your-username:rw /path/to/disk
```
- Mount your RedoxFS partition
```sh
redoxfs /path/to/disk /path/to/mount
```
[![Travis Build Status](https://travis-ci.org/redox-os/redoxfs.svg?branch=master)](https://travis-ci.org/redox-os/redoxfs)
[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE)
[![crates.io](http://meritbadge.herokuapp.com/redoxfs)](https://crates.io/crates/redoxfs)
[![docs.rs](https://docs.rs/redoxfs/badge.svg)](https://docs.rs/redoxfs)
create.sh deleted 100755 → 0
View file @ 3a58139e
#!/bin/bash
rm -f test.bin
cargo run --bin redoxfs-utility test.bin << "EOF"
mk a_file
mkdir a_directory
cd a_directory
ed b_file
B FILE
.
cat b_file
ed c_file
C FILE
.
cat c_file
ls
exit
EOF
fuse/image.rs deleted 100644 → 0
View file @ 3a58139e
use std::fs::{File, OpenOptions};
use std::io::{Read, Write, Seek, SeekFrom};
use redoxfs::Disk;
use syscall::error::{Error, Result, EIO};
macro_rules! try_disk {
($expr:expr) => (match $expr {
Ok(val) => val,
Err(err) => {
println!("Disk I/O Error: {}", err);
return Err(Error::new(EIO));
}
})
}
pub struct Image {
file: File
}
impl Image {
pub fn open(path: &str) -> Result<Image> {
let file = try_disk!(OpenOptions::new().read(true).write(true).open(path));
Ok(Image {
file: file
})
}
pub fn create(path: &str, size: u64) -> Result<Image> {
let file = try_disk!(OpenOptions::new().read(true).write(true).create(true).open(path));
try_disk!(file.set_len(size));
Ok(Image {
file: file
})
}
}
impl Disk for Image {
fn read_at(&mut self, block: u64, buffer: &mut [u8]) -> Result<usize> {
try_disk!(self.file.seek(SeekFrom::Start(block * 512)));
let count = try_disk!(self.file.read(buffer));
Ok(count)
}
fn write_at(&mut self, block: u64, buffer: &[u8]) -> Result<usize> {
try_disk!(self.file.seek(SeekFrom::Start(block * 512)));
let count = try_disk!(self.file.write(buffer));
Ok(count)
}
fn size(&mut self) -> Result<u64> {
let size = try_disk!(self.file.seek(SeekFrom::End(0)));
Ok(size)
}
}
fuse/main.rs deleted 100644 → 0
View file @ 3a58139e
#![deny(warnings)]
extern crate fuse;
extern crate redoxfs;
extern crate syscall;
extern crate time;
use image::Image;
use std::env;
use std::path::Path;
use time::Timespec;
use fuse::{FileType, FileAttr, Filesystem, Request, ReplyData, ReplyEntry, ReplyAttr, ReplyCreate, ReplyDirectory, ReplyEmpty, ReplyStatfs, ReplyWrite};
pub mod image;
const TTL: Timespec = Timespec { sec: 1, nsec: 0 }; // 1 second
const CREATE_TIME: Timespec = Timespec { sec: 0, nsec: 0 };
struct RedoxFS {
fs: redoxfs::FileSystem,
}
fn node_attr(node: &(u64, redoxfs::Node)) -> FileAttr {
FileAttr {
ino: node.0,
size: node.1.extents[0].length,
blocks: (node.1.extents[0].length + 511)/512,
atime: CREATE_TIME,
mtime: CREATE_TIME,
ctime: CREATE_TIME,
crtime: CREATE_TIME,
kind: if node.1.is_dir() {
FileType::Directory
} else {
FileType::RegularFile
},
perm: node.1.mode & redoxfs::Node::MODE_PERM,
nlink: 1,
uid: node.1.uid,
gid: node.1.gid,
rdev: 0,
flags: 0,
}
}
impl Filesystem for RedoxFS {
fn lookup(&mut self, _req: &Request, parent_block: u64, name: &Path, reply: ReplyEntry) {
match self.fs.find_node(name.to_str().unwrap(), parent_block) {
Ok(node) => {
reply.entry(&TTL, &node_attr(&node), 0);
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn getattr(&mut self, _req: &Request, block: u64, reply: ReplyAttr) {
match self.fs.node(block) {
Ok(node) => {
reply.attr(&TTL, &node_attr(&node));
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn setattr(&mut self, _req: &Request, block: u64, mode: Option<u32>,
uid: Option<u32>, gid: Option<u32>, size: Option<u64>,
_atime: Option<Timespec>, _mtime: Option<Timespec>, _fh: Option<u64>,
_crtime: Option<Timespec>, _chgtime: Option<Timespec>, _bkuptime: Option<Timespec>,
_flags: Option<u32>, reply: ReplyAttr) {
if let Some(mode) = mode {
match self.fs.node(block) {
Ok(mut node) => if node.1.mode & redoxfs::Node::MODE_PERM != mode as u16 & redoxfs::Node::MODE_PERM {
// println!("Chmod {:?}:{:o}:{:o}", node.1.name(), node.1.mode, mode);
node.1.mode = (node.1.mode & redoxfs::Node::MODE_TYPE) | (mode as u16 & redoxfs::Node::MODE_PERM);
if let Err(err) = self.fs.write_at(node.0, &node.1) {
reply.error(err.errno as i32);
return;
}
},
Err(err) => {
reply.error(err.errno as i32);
return;
}
}
}
if let Some(uid) = uid {
match self.fs.node(block) {
Ok(mut node) => if node.1.uid != uid {
node.1.uid = uid;
if let Err(err) = self.fs.write_at(node.0, &node.1) {
reply.error(err.errno as i32);
return;
}
},
Err(err) => {
reply.error(err.errno as i32);
return;
}
}
}
if let Some(gid) = gid {
match self.fs.node(block) {
Ok(mut node) => if node.1.gid != gid {
node.1.gid = gid;
if let Err(err) = self.fs.write_at(node.0, &node.1) {
reply.error(err.errno as i32);
return;
}
},
Err(err) => {
reply.error(err.errno as i32);
return;
}
}
}
if let Some(size) = size {
if let Err(err) = self.fs.node_set_len(block, size) {
reply.error(err.errno as i32);
return;
}
}
match self.fs.node(block) {
Ok(node) => {
reply.attr(&TTL, &node_attr(&node));
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn read(&mut self, _req: &Request, block: u64, _fh: u64, offset: u64, size: u32, reply: ReplyData) {
let mut data = vec![0; size as usize];
match self.fs.read_node(block, offset, &mut data) {
Ok(count) => {
reply.data(&data[..count]);
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn write(&mut self, _req: &Request, block: u64, _fh: u64, offset: u64, data: &[u8], _flags: u32, reply: ReplyWrite) {
match self.fs.write_node(block, offset, &data) {
Ok(count) => {
reply.written(count as u32);
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn flush(&mut self, _req: &Request, _ino: u64, _fh: u64, _lock_owner: u64, reply: ReplyEmpty) {
reply.ok();
}
fn fsync(&mut self, _req: &Request, _ino: u64, _fh: u64, _datasync: bool, reply: ReplyEmpty) {
reply.ok();
}
fn readdir(&mut self, _req: &Request, parent_block: u64, _fh: u64, offset: u64, mut reply: ReplyDirectory) {
let mut children = Vec::new();
match self.fs.child_nodes(&mut children, parent_block) {
Ok(()) => {
if offset == 0 {
let mut i = 0;
reply.add(parent_block - self.fs.header.0, i, FileType::Directory, ".");
i += 1;
reply.add(parent_block - self.fs.header.0, i, FileType::Directory, "..");
i += 1;
for child in children.iter() {
reply.add(child.0 - self.fs.header.0, i, if child.1.is_dir() {
FileType::Directory
} else {
FileType::RegularFile
}, child.1.name().unwrap());
i += 1;
}
}
reply.ok();
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn create(&mut self, _req: &Request, parent_block: u64, name: &Path, mode: u32, flags: u32, reply: ReplyCreate) {
match self.fs.create_node(redoxfs::Node::MODE_FILE | (mode as u16 & redoxfs::Node::MODE_PERM), name.to_str().unwrap(), parent_block) {
Ok(node) => {
// println!("Create {:?}:{:o}:{:o}", node.1.name(), node.1.mode, mode);
reply.created(&TTL, &node_attr(&node), 0, 0, flags);
},
Err(error) => {
reply.error(error.errno as i32);
}
}
}
fn mkdir(&mut self, _req: &Request, parent_block: u64, name: &Path, mode: u32, reply: ReplyEntry) {
match self.fs.create_node(redoxfs::Node::MODE_DIR | (mode as u16 & redoxfs::Node::MODE_PERM), name.to_str().unwrap(), parent_block) {
Ok(node) => {
// println!("Mkdir {:?}:{:o}:{:o}", node.1.name(), node.1.mode, mode);
reply.entry(&TTL, &node_attr(&node), 0);
},
Err(error) => {
reply.error(error.errno as i32);
}
}
}
fn rmdir(&mut self, _req: &Request, parent_block: u64, name: &Path, reply: ReplyEmpty) {
match self.fs.remove_node(redoxfs::Node::MODE_DIR, name.to_str().unwrap(), parent_block) {
Ok(()) => {
reply.ok();
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn unlink(&mut self, _req: &Request, parent_block: u64, name: &Path, reply: ReplyEmpty) {
match self.fs.remove_node(redoxfs::Node::MODE_FILE, name.to_str().unwrap(), parent_block) {
Ok(()) => {
reply.ok();
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
fn statfs(&mut self, _req: &Request, _ino: u64, reply: ReplyStatfs) {
let free = self.fs.header.1.free;
match self.fs.node_len(free) {
Ok(free_size) => {
let bsize = 512;
let blocks = self.fs.header.1.size/bsize;
let bfree = free_size/bsize;
reply.statfs(blocks, bfree, bfree, 0, 0, bsize as u32, 256, 0);
},
Err(err) => {
reply.error(err.errno as i32);
}
}
}
}
#[cfg(target_os = "osx")]
fn main() {
use std::ffi::OsStr;
if let Some(path) = env::args().nth(1) {
//Open an existing image
match Image::open(&path) {
Ok(disk) => match redoxfs::FileSystem::open(Box::new(disk)) {
Ok(filesystem) => {
println!("redoxfs: opened filesystem {}", path);
if let Some(mountpoint) = env::args_os().nth(2) {
fuse::mount(RedoxFS {
fs: filesystem
}, &mountpoint, &[
// One of the uses of this redoxfs fuse wrapper is to populate a filesystem
// while building the Redox OS kernel. This means that we need to write on
// a filesystem that belongs to `root`, which in turn means that we need to
// be `root`, thus that we need to allow `root` to have access.
OsStr::new("-o"),
OsStr::new("allow_root"),
]);
} else {
println!("redoxfs: no mount point provided");
}
},
Err(err) => println!("redoxfs: failed to open filesystem {}: {}", path, err)
},
Err(err) => println!("redoxfs: failed to open image {}: {}", path, err)
}
} else {
println!("redoxfs: no disk image provided");
}
}
#[cfg(not(target_os = "osx"))]
fn main() {
if let Some(path) = env::args().nth(1) {
//Open an existing image
match Image::open(&path) {
Ok(disk) => match redoxfs::FileSystem::open(Box::new(disk)) {
Ok(filesystem) => {
println!("redoxfs: opened filesystem {}", path);
if let Some(mountpoint) = env::args_os().nth(2) {
fuse::mount(RedoxFS {
fs: filesystem
}, &mountpoint, &[]);
} else {
println!("redoxfs: no mount point provided");
}
},
Err(err) => println!("redoxfs: failed to open filesystem {}: {}", path, err)
},
Err(err) => println!("redoxfs: failed to open image {}: {}", path, err)
}
} else {
println!("redoxfs: no disk image provided");
}
}
fuzz/.gitignore 0 → 100644
View file @ 32aeff0c
target
corpus
artifacts
coverage
fuzz/Cargo.lock 0 → 100644
View file @ 32aeff0c
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
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"cipher",
"cpufeatures",
"opaque-debug",
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checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6"
[[package]]
name = "windows_i686_gnu"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670"
[[package]]
name = "windows_i686_gnullvm"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9"
[[package]]
name = "windows_i686_msvc"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf"
[[package]]
name = "windows_x86_64_gnu"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9"
[[package]]
name = "windows_x86_64_gnullvm"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
[[package]]
name = "zerocopy"
version = "0.6.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "854e949ac82d619ee9a14c66a1b674ac730422372ccb759ce0c39cabcf2bf8e6"
dependencies = [
"byteorder",
"zerocopy-derive",
]
[[package]]
name = "zerocopy-derive"
version = "0.6.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "125139de3f6b9d625c39e2efdd73d41bdac468ccd556556440e322be0e1bbd91"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
fuzz/Cargo.toml 0 → 100644
View file @ 32aeff0c
[package]
name = "redoxfs-fuzz"
version = "0.0.0"
publish = false
edition = "2021"
[features]
default = []
log = []
[package.metadata]
cargo-fuzz = true
[dependencies]
anyhow = "1.0.86"
arbitrary = { version = "1.3.2", features = ["derive"] }
fuser = { version = "0.12.0" }
libfuzzer-sys = "0.4"
nix = { version = "0.29.0", features = ["fs"] }
tempfile = "3.10.1"
[dependencies.redoxfs]
path = ".."
[[bin]]
name = "fuse_fuzz_target"
path = "fuzz_targets/fuse_fuzz_target.rs"
test = false
doc = false
bench = false
fuzz/fuzz_targets/fuse_fuzz_target.rs 0 → 100644
View file @ 32aeff0c
//! Fuzzer that exercises random file system operations against a FUSE-mounted redoxfs.
#![no_main]
use anyhow::{ensure, Result};
use fuser;
use libfuzzer_sys::{arbitrary::Arbitrary, fuzz_target, Corpus};
use nix::sys::statvfs::statvfs;
use std::{
fs::{self, File, FileTimes, OpenOptions},
io::{Read, Seek, SeekFrom, Write},
os::unix::fs::{self as unix_fs, PermissionsExt},
path::{Path, PathBuf},
thread,
time::{Duration, SystemTime, UNIX_EPOCH},
};
use tempfile;
use redoxfs::{mount::fuse::Fuse, DiskSparse, FileSystem};
/// Maximum size for files and buffers. Chosen arbitrarily with fuzzing performance in mind.
const MAX_SIZE: u64 = 10_000_000;
/// Limit on the number of remounts in a single test case. Chosen arbitrarily with fuzzing
/// performance in mind: remounts are costly.
const MAX_MOUNT_SEQUENCES: usize = 3;
/// An operation to be performed by the fuzzer.
#[derive(Arbitrary, Clone, Debug)]
enum Operation {
Chown {
path: PathBuf,
uid: Option<u32>,
gid: Option<u32>,
},
CreateDir {
path: PathBuf,
},
HardLink {
original: PathBuf,
link: PathBuf,
},
Metadata {
path: PathBuf,
},
Read {
path: PathBuf,
},
ReadDir {
path: PathBuf,
},
ReadLink {
path: PathBuf,
},
RemoveDir {
path: PathBuf,
},
RemoveFile {
path: PathBuf,
},
Rename {
from: PathBuf,
to: PathBuf,
},
SeekRead {
path: PathBuf,
seek_pos: u64,
buf_size: usize,
},
SeekWrite {
path: PathBuf,
seek_pos: u64,
buf_size: usize,
},
SetLen {
path: PathBuf,
size: u64,
},
SetPermissions {
path: PathBuf,
readonly: Option<bool>,
mode: Option<u32>,
},
SetTimes {
path: PathBuf,
accessed_since_epoch: Option<Duration>,
modified_since_epoch: Option<Duration>,
},
Statvfs {},
SymLink {
original: PathBuf,
link: PathBuf,
},
Write {
path: PathBuf,
buf_size: usize,
},
}
/// Parameters for mounting the file system and operations to be performed afterwards.
#[derive(Arbitrary, Clone, Debug)]
struct MountSequence {
squash: bool,
operations: Vec<Operation>,
}
/// The whole input to a single fuzzer invocation.
#[derive(Arbitrary, Clone, Debug)]
struct TestCase {
disk_size: u64,
reserved_size: u64,
mount_sequences: Vec<MountSequence>,
}
/// Creates the disk for backing the Redoxfs.
fn create_disk(temp_path: &Path, disk_size: u64) -> DiskSparse {
let disk_path = temp_path.join("disk.img");
DiskSparse::create(disk_path, disk_size).unwrap()
}
/// Creates an empty Redoxfs.
fn create_redoxfs(disk: DiskSparse, reserved_size: u64) -> bool {
let password = None;
let reserved = vec![0; reserved_size as usize];
let ctime = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
FileSystem::create_reserved(
disk,
password,
&reserved,
ctime.as_secs(),
ctime.subsec_nanos(),
)
.is_ok()
}
/// Mounts an existing Redoxfs, runs the callback and performs the unmount.
fn with_redoxfs_mount<F>(temp_path: &Path, disk: DiskSparse, squash: bool, callback: F)
where
F: FnOnce(&Path) + Send + 'static,
{
let password = None;
let block = None;
let mut fs = FileSystem::open(disk, password, block, squash).unwrap();
let mount_path = temp_path.join("mount");
fs::create_dir_all(&mount_path).unwrap();
let mut session = fuser::Session::new(Fuse { fs: &mut fs }, &mount_path, &[]).unwrap();
let mut unmounter = session.unmount_callable();
let join_handle = thread::spawn(move || {
callback(&mount_path);
unmounter.unmount().unwrap();
});
session.run().unwrap();
join_handle.join().unwrap();
}
fn get_path_within_fs(fs_path: &Path, path_to_add: &Path) -> Result<PathBuf> {
ensure!(path_to_add.is_relative());
ensure!(path_to_add
.components()
.all(|c| c != std::path::Component::ParentDir));
Ok(fs_path.join(path_to_add))
}
fn do_operation(fs_path: &Path, op: &Operation) -> Result<()> {
match op {
Operation::Chown { path, uid, gid } => {
let path = get_path_within_fs(fs_path, path)?;
unix_fs::chown(path, *uid, *gid)?;
}
Operation::CreateDir { path } => {
let path = get_path_within_fs(fs_path, path)?;
fs::create_dir(path)?;
}
Operation::HardLink { original, link } => {
let original = get_path_within_fs(fs_path, original)?;
let link = get_path_within_fs(fs_path, link)?;
fs::hard_link(original, link)?;
}
Operation::Metadata { path } => {
let path = get_path_within_fs(fs_path, path)?;
fs::metadata(path)?;
}
Operation::Read { path } => {
let path = get_path_within_fs(fs_path, path)?;
fs::read(path)?;
}
Operation::ReadDir { path } => {
let path = get_path_within_fs(fs_path, path)?;
let _ = fs::read_dir(path)?.count();
}
Operation::ReadLink { path } => {
let path = get_path_within_fs(fs_path, path)?;
fs::read_link(path)?;
}
Operation::RemoveDir { path } => {
let path = get_path_within_fs(fs_path, path)?;
fs::remove_dir(path)?;
}
Operation::RemoveFile { path } => {
let path = get_path_within_fs(fs_path, path)?;
fs::remove_file(path)?;
}
Operation::Rename { from, to } => {
let from = get_path_within_fs(fs_path, from)?;
let to = get_path_within_fs(fs_path, to)?;
fs::rename(from, to)?;
}
Operation::SeekRead {
path,
seek_pos,
buf_size,
} => {
ensure!(*buf_size as u64 <= MAX_SIZE);
let path = get_path_within_fs(fs_path, path)?;
let mut file = File::open(path)?;
file.seek(SeekFrom::Start(*seek_pos))?;
let mut buf = vec![0; *buf_size];
file.read(&mut buf)?;
}
Operation::SeekWrite {
path,
seek_pos,
buf_size,
} => {
ensure!(*seek_pos <= MAX_SIZE);
ensure!(*buf_size as u64 <= MAX_SIZE);
let path = get_path_within_fs(fs_path, path)?;
let mut file = OpenOptions::new().write(true).open(path)?;
file.seek(SeekFrom::Start(*seek_pos))?;
let buf = vec![0; *buf_size];
file.write(&buf)?;
}
Operation::SetLen { path, size } => {
let path = get_path_within_fs(fs_path, path)?;
let file = OpenOptions::new().write(true).open(path)?;
file.set_len(*size)?;
}
Operation::SetPermissions {
path,
readonly,
mode,
} => {
let path = get_path_within_fs(fs_path, path)?;
let metadata = fs::metadata(&path)?;
let mut perms = metadata.permissions();
if let Some(readonly) = readonly {
perms.set_readonly(*readonly);
}
if let Some(mode) = mode {
perms.set_mode(*mode);
}
fs::set_permissions(path, perms)?;
}
Operation::SetTimes {
path,
accessed_since_epoch,
modified_since_epoch,
} => {
let path = get_path_within_fs(fs_path, path)?;
let file = File::options().write(true).open(path)?;
let mut times = FileTimes::new();
if let Some(accessed_since_epoch) = accessed_since_epoch {
if let Some(accessed) = UNIX_EPOCH.checked_add(*accessed_since_epoch) {
times = times.set_accessed(accessed);
}
}
if let Some(modified_since_epoch) = modified_since_epoch {
if let Some(modified) = UNIX_EPOCH.checked_add(*modified_since_epoch) {
times = times.set_modified(modified);
}
}
file.set_times(times)?;
}
Operation::Statvfs {} => {
statvfs(fs_path)?;
}
Operation::SymLink { original, link } => {
let original = get_path_within_fs(fs_path, original)?;
let link = get_path_within_fs(fs_path, link)?;
unix_fs::symlink(original, link)?;
}
Operation::Write { path, buf_size } => {
ensure!(*buf_size as u64 <= MAX_SIZE);
let path = get_path_within_fs(fs_path, path)?;
let buf = vec![0; *buf_size];
fs::write(path, &buf)?;
}
}
Ok(())
}
fuzz_target!(|test_case: TestCase| -> Corpus {
if test_case.disk_size > MAX_SIZE
|| test_case.reserved_size > MAX_SIZE
|| test_case.mount_sequences.len() > MAX_MOUNT_SEQUENCES
{
return Corpus::Reject;
}
let temp_dir = tempfile::Builder::new()
.prefix("fuse_fuzz_target")
.tempdir()
.unwrap();
#[cfg(feature = "log")]
eprintln!("create fs");
let disk = create_disk(temp_dir.path(), test_case.disk_size);
if !create_redoxfs(disk, test_case.reserved_size) {
// File system creation failed (e.g., due to insufficient space) so we bail out, still
// exercising this code path is useful.
return Corpus::Keep;
}
for mount_seq in test_case.mount_sequences.iter() {
#[cfg(feature = "log")]
eprintln!("mount fs");
let disk = create_disk(temp_dir.path(), test_case.disk_size);
let operations = mount_seq.operations.clone();
with_redoxfs_mount(temp_dir.path(), disk, mount_seq.squash, move |fs_path| {
for operation in operations.iter() {
#[cfg(feature = "log")]
eprintln!("do operation {operation:?}");
let _result = do_operation(fs_path, operation);
#[cfg(feature = "log")]
eprintln!("operation result {:?}", _result.err());
}
});
#[cfg(feature = "log")]
eprintln!("unmounted fs");
}
Corpus::Keep
});
mount.sh deleted 100755 → 0
View file @ 3a58139e
#!/bin/bash
mkdir -p test
cargo run --bin redoxfs-fuse test.bin test &
scheme/cache/linked_hash_map.rs deleted 100644 → 0
View file @ 3a58139e
This diff is collapsed.
scheme/cache/lru_cache.rs deleted 100644 → 0
View file @ 3a58139e
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! A cache that holds a limited number of key-value pairs. When the
//! capacity of the cache is exceeded, the least-recently-used
//! (where "used" means a look-up or putting the pair into the cache)
//! pair is automatically removed.
//!
//! # Examples
//!
//! ```
//! use lru_cache::LruCache;
//!
//! let mut cache = LruCache::new(2);
//!
//! cache.insert(1, 10);
//! cache.insert(2, 20);
//! cache.insert(3, 30);
//! assert!(cache.get_mut(&1).is_none());
//! assert_eq!(*cache.get_mut(&2).unwrap(), 20);
//! assert_eq!(*cache.get_mut(&3).unwrap(), 30);
//!
//! cache.insert(2, 22);
//! assert_eq!(*cache.get_mut(&2).unwrap(), 22);
//!
//! cache.insert(6, 60);
//! assert!(cache.get_mut(&3).is_none());
//!
//! cache.set_capacity(1);
//! assert!(cache.get_mut(&2).is_none());
//! ```
use std::collections::hash_map::RandomState;
use std::fmt;
use std::hash::{Hash, BuildHasher};
use std::borrow::Borrow;
use super::linked_hash_map::{self, LinkedHashMap};
// FIXME(conventions): implement indexing?
/// An LRU cache.
pub struct LruCache<K, V, S = RandomState> where K: Eq + Hash, S: BuildHasher {
map: LinkedHashMap<K, V, S>,
max_size: usize,
}
impl<K: Hash + Eq, V> LruCache<K, V> {
/// Creates an empty cache that can hold at most `capacity` items.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
/// let mut cache: LruCache<i32, &str> = LruCache::new(10);
/// ```
pub fn new(capacity: usize) -> LruCache<K, V> {
LruCache {
map: LinkedHashMap::new(),
max_size: capacity,
}
}
}
impl<K, V, S> LruCache<K, V, S> where K: Eq + Hash, S: BuildHasher {
/// Creates an empty cache that can hold at most `capacity` items with the given hash state.
pub fn with_hash_state(capacity: usize, hash_state: S) -> LruCache<K, V, S> {
LruCache { map: LinkedHashMap::with_hash_state(hash_state), max_size: capacity }
}
/// Checks if the map contains the given key.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(1);
///
/// cache.insert(1, "a");
/// assert_eq!(cache.contains_key(&1), true);
/// ```
pub fn contains_key<Q: ?Sized>(&mut self, key: &Q) -> bool
where K: Borrow<Q>,
Q: Hash + Eq
{
self.get_mut(key).is_some()
}
/// Inserts a key-value pair into the cache. If the key already existed, the old value is
/// returned.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(2);
///
/// cache.insert(1, "a");
/// cache.insert(2, "b");
/// assert_eq!(cache.get_mut(&1), Some(&mut "a"));
/// assert_eq!(cache.get_mut(&2), Some(&mut "b"));
/// ```
pub fn insert(&mut self, k: K, v: V) -> Option<V> {
let old_val = self.map.insert(k, v);
if self.len() > self.capacity() {
self.remove_lru();
}
old_val
}
/// Returns a mutable reference to the value corresponding to the given key in the cache, if
/// any.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(2);
///
/// cache.insert(1, "a");
/// cache.insert(2, "b");
/// cache.insert(2, "c");
/// cache.insert(3, "d");
///
/// assert_eq!(cache.get_mut(&1), None);
/// assert_eq!(cache.get_mut(&2), Some(&mut "c"));
/// ```
pub fn get_mut<Q: ?Sized>(&mut self, k: &Q) -> Option<&mut V>
where K: Borrow<Q>,
Q: Hash + Eq
{
self.map.get_refresh(k)
}
/// Removes the given key from the cache and returns its corresponding value.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(2);
///
/// cache.insert(2, "a");
///
/// assert_eq!(cache.remove(&1), None);
/// assert_eq!(cache.remove(&2), Some("a"));
/// assert_eq!(cache.remove(&2), None);
/// assert_eq!(cache.len(), 0);
/// ```
pub fn remove<Q: ?Sized>(&mut self, k: &Q) -> Option<V>
where K: Borrow<Q>,
Q: Hash + Eq
{
self.map.remove(k)
}
/// Returns the maximum number of key-value pairs the cache can hold.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
/// let mut cache: LruCache<i32, &str> = LruCache::new(2);
/// assert_eq!(cache.capacity(), 2);
/// ```
pub fn capacity(&self) -> usize {
self.max_size
}
/// Sets the number of key-value pairs the cache can hold. Removes
/// least-recently-used key-value pairs if necessary.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(2);
///
/// cache.insert(1, "a");
/// cache.insert(2, "b");
/// cache.insert(3, "c");
///
/// assert_eq!(cache.get_mut(&1), None);
/// assert_eq!(cache.get_mut(&2), Some(&mut "b"));
/// assert_eq!(cache.get_mut(&3), Some(&mut "c"));
///
/// cache.set_capacity(3);
/// cache.insert(1, "a");
/// cache.insert(2, "b");
///
/// assert_eq!(cache.get_mut(&1), Some(&mut "a"));
/// assert_eq!(cache.get_mut(&2), Some(&mut "b"));
/// assert_eq!(cache.get_mut(&3), Some(&mut "c"));
///
/// cache.set_capacity(1);
///
/// assert_eq!(cache.get_mut(&1), None);
/// assert_eq!(cache.get_mut(&2), None);
/// assert_eq!(cache.get_mut(&3), Some(&mut "c"));
/// ```
pub fn set_capacity(&mut self, capacity: usize) {
for _ in capacity..self.len() {
self.remove_lru();
}
self.max_size = capacity;
}
#[inline]
fn remove_lru(&mut self) -> Option<(K, V)> {
self.map.pop_front()
}
/// Returns the number of key-value pairs in the cache.
pub fn len(&self) -> usize { self.map.len() }
/// Returns `true` if the cache contains no key-value pairs.
pub fn is_empty(&self) -> bool { self.map.is_empty() }
/// Removes all key-value pairs from the cache.
pub fn clear(&mut self) { self.map.clear(); }
/// Returns an iterator over the cache's key-value pairs in least- to most-recently-used order.
///
/// Accessing the cache through the iterator does _not_ affect the cache's LRU state.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(2);
///
/// cache.insert(1, 10);
/// cache.insert(2, 20);
/// cache.insert(3, 30);
///
/// let kvs: Vec<_> = cache.iter().collect();
/// assert_eq!(kvs, [(&2, &20), (&3, &30)]);
/// ```
pub fn iter(&self) -> Iter<K, V> { Iter(self.map.iter()) }
/// Returns an iterator over the cache's key-value pairs in least- to most-recently-used order,
/// with mutable references to the values.
///
/// Accessing the cache through the iterator does _not_ affect the cache's LRU state.
///
/// # Examples
///
/// ```
/// use lru_cache::LruCache;
///
/// let mut cache = LruCache::new(2);
///
/// cache.insert(1, 10);
/// cache.insert(2, 20);
/// cache.insert(3, 30);
///
/// let mut n = 2;
///
/// for (k, v) in cache.iter_mut() {
/// assert_eq!(*k, n);
/// assert_eq!(*v, n * 10);
/// *v *= 10;
/// n += 1;
/// }
///
/// assert_eq!(n, 4);
/// assert_eq!(cache.get_mut(&2), Some(&mut 200));
/// assert_eq!(cache.get_mut(&3), Some(&mut 300));
/// ```
pub fn iter_mut(&mut self) -> IterMut<K, V> { IterMut(self.map.iter_mut()) }
}
impl<K: Hash + Eq, V, S: BuildHasher> Extend<(K, V)> for LruCache<K, V, S> {
fn extend<T: IntoIterator<Item=(K, V)>>(&mut self, iter: T) {
for (k, v) in iter {
self.insert(k, v);
}
}
}
impl<A: fmt::Debug + Hash + Eq, B: fmt::Debug, S: BuildHasher> fmt::Debug for LruCache<A, B, S> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_map().entries(self.iter().rev()).finish()
}
}
impl<'a, K, V, S> IntoIterator for &'a LruCache<K, V, S> where K: Eq + Hash, S: BuildHasher {
type Item = (&'a K, &'a V);
type IntoIter = Iter<'a, K, V>;
fn into_iter(self) -> Iter<'a, K, V> { self.iter() }
}
impl<'a, K, V, S> IntoIterator for &'a mut LruCache<K, V, S> where K: Eq + Hash, S: BuildHasher {
type Item = (&'a K, &'a mut V);
type IntoIter = IterMut<'a, K, V>;
fn into_iter(self) -> IterMut<'a, K, V> { self.iter_mut() }
}
impl<K, V> Clone for LruCache<K, V> where K: Clone + Eq + Hash, V: Clone {
fn clone(&self) -> LruCache<K, V> { LruCache { map: self.map.clone(), ..*self } }
}
/// An iterator over a cache's key-value pairs in least- to most-recently-used order.
///
/// Accessing a cache through the iterator does _not_ affect the cache's LRU state.
pub struct Iter<'a, K: 'a, V: 'a>(linked_hash_map::Iter<'a, K, V>);
impl<'a, K, V> Clone for Iter<'a, K, V> {
fn clone(&self) -> Iter<'a, K, V> { Iter(self.0.clone()) }
}
impl<'a, K, V> Iterator for Iter<'a, K, V> {
type Item = (&'a K, &'a V);
fn next(&mut self) -> Option<(&'a K, &'a V)> { self.0.next() }
fn size_hint(&self) -> (usize, Option<usize>) { self.0.size_hint() }
}
impl<'a, K, V> DoubleEndedIterator for Iter<'a, K, V> {
fn next_back(&mut self) -> Option<(&'a K, &'a V)> { self.0.next_back() }
}
impl<'a, K, V> ExactSizeIterator for Iter<'a, K, V> {
fn len(&self) -> usize { self.0.len() }
}
/// An iterator over a cache's key-value pairs in least- to most-recently-used order with mutable
/// references to the values.
///
/// Accessing a cache through the iterator does _not_ affect the cache's LRU state.
pub struct IterMut<'a, K: 'a, V: 'a>(linked_hash_map::IterMut<'a, K, V>);
impl<'a, K, V> Iterator for IterMut<'a, K, V> {
type Item = (&'a K, &'a mut V);
fn next(&mut self) -> Option<(&'a K, &'a mut V)> { self.0.next() }
fn size_hint(&self) -> (usize, Option<usize>) { self.0.size_hint() }
}
impl<'a, K, V> DoubleEndedIterator for IterMut<'a, K, V> {
fn next_back(&mut self) -> Option<(&'a K, &'a mut V)> { self.0.next_back() }
}
impl<'a, K, V> ExactSizeIterator for IterMut<'a, K, V> {
fn len(&self) -> usize { self.0.len() }
}
#[cfg(test)]
mod tests {
use super::LruCache;
#[test]
fn test_put_and_get() {
let mut cache = LruCache::new(2);
cache.insert(1, 10);
cache.insert(2, 20);
assert_eq!(cache.get_mut(&1), Some(&mut 10));
assert_eq!(cache.get_mut(&2), Some(&mut 20));
assert_eq!(cache.len(), 2);
}
#[test]
fn test_put_update() {
let mut cache = LruCache::new(1);
cache.insert("1", 10);
cache.insert("1", 19);
assert_eq!(cache.get_mut("1"), Some(&mut 19));
assert_eq!(cache.len(), 1);
}
#[test]
fn test_contains_key() {
let mut cache = LruCache::new(1);
cache.insert("1", 10);
assert_eq!(cache.contains_key("1"), true);
}
#[test]
fn test_expire_lru() {
let mut cache = LruCache::new(2);
cache.insert("foo1", "bar1");
cache.insert("foo2", "bar2");
cache.insert("foo3", "bar3");
assert!(cache.get_mut("foo1").is_none());
cache.insert("foo2", "bar2update");
cache.insert("foo4", "bar4");
assert!(cache.get_mut("foo3").is_none());
}
#[test]
fn test_pop() {
let mut cache = LruCache::new(2);
cache.insert(1, 10);
cache.insert(2, 20);
assert_eq!(cache.len(), 2);
let opt1 = cache.remove(&1);
assert!(opt1.is_some());
assert_eq!(opt1.unwrap(), 10);
assert!(cache.get_mut(&1).is_none());
assert_eq!(cache.len(), 1);
}
#[test]
fn test_change_capacity() {
let mut cache = LruCache::new(2);
assert_eq!(cache.capacity(), 2);
cache.insert(1, 10);
cache.insert(2, 20);
cache.set_capacity(1);
assert!(cache.get_mut(&1).is_none());
assert_eq!(cache.capacity(), 1);
}
#[test]
fn test_debug() {
let mut cache = LruCache::new(3);
cache.insert(1, 10);
cache.insert(2, 20);
cache.insert(3, 30);
assert_eq!(format!("{:?}", cache), "{3: 30, 2: 20, 1: 10}");
cache.insert(2, 22);
assert_eq!(format!("{:?}", cache), "{2: 22, 3: 30, 1: 10}");
cache.insert(6, 60);
assert_eq!(format!("{:?}", cache), "{6: 60, 2: 22, 3: 30}");
cache.get_mut(&3);
assert_eq!(format!("{:?}", cache), "{3: 30, 6: 60, 2: 22}");
cache.set_capacity(2);
assert_eq!(format!("{:?}", cache), "{3: 30, 6: 60}");
}
#[test]
fn test_remove() {
let mut cache = LruCache::new(3);
cache.insert(1, 10);
cache.insert(2, 20);
cache.insert(3, 30);
cache.insert(4, 40);
cache.insert(5, 50);
cache.remove(&3);
cache.remove(&4);
assert!(cache.get_mut(&3).is_none());
assert!(cache.get_mut(&4).is_none());
cache.insert(6, 60);
cache.insert(7, 70);
cache.insert(8, 80);
assert!(cache.get_mut(&5).is_none());
assert_eq!(cache.get_mut(&6), Some(&mut 60));
assert_eq!(cache.get_mut(&7), Some(&mut 70));
assert_eq!(cache.get_mut(&8), Some(&mut 80));
}
#[test]
fn test_clear() {
let mut cache = LruCache::new(2);
cache.insert(1, 10);
cache.insert(2, 20);
cache.clear();
assert!(cache.get_mut(&1).is_none());
assert!(cache.get_mut(&2).is_none());
assert_eq!(format!("{:?}", cache), "{}");
}
#[test]
fn test_iter() {
let mut cache = LruCache::new(3);
cache.insert(1, 10);
cache.insert(2, 20);
cache.insert(3, 30);
cache.insert(4, 40);
cache.insert(5, 50);
assert_eq!(cache.iter().collect::<Vec<_>>(),
[(&3, &30), (&4, &40), (&5, &50)]);
assert_eq!(cache.iter_mut().collect::<Vec<_>>(),
[(&3, &mut 30), (&4, &mut 40), (&5, &mut 50)]);
assert_eq!(cache.iter().rev().collect::<Vec<_>>(),
[(&5, &50), (&4, &40), (&3, &30)]);
assert_eq!(cache.iter_mut().rev().collect::<Vec<_>>(),
[(&5, &mut 50), (&4, &mut 40), (&3, &mut 30)]);
}
}
scheme/image.rs deleted 100644 → 0
View file @ 3a58139e
use std::fs::File;
use std::io::{Read, Write, Seek, SeekFrom};
use redoxfs::Disk;
use syscall::error::{Error, Result, EIO};
macro_rules! try_disk {
($expr:expr) => (match $expr {
Ok(val) => val,
Err(err) => {
println!("Disk I/O Error: {}", err);
return Err(Error::new(EIO));
}
})
}
pub struct Image {
file: File
}
impl Image {
pub fn open(path: &str) -> Result<Image> {
let file = try_disk!(File::open(path));
Ok(Image {
file: file
})
}
}
impl Disk for Image {
fn read_at(&mut self, block: u64, buffer: &mut [u8]) -> Result<usize> {
// println!("Image read at {}", block);
try_disk!(self.file.seek(SeekFrom::Start(block * 512)));
let count = try_disk!(self.file.read(buffer));
Ok(count)
}
fn write_at(&mut self, block: u64, buffer: &[u8]) -> Result<usize> {
try_disk!(self.file.seek(SeekFrom::Start(block * 512)));
let count = try_disk!(self.file.write(buffer));
Ok(count)
}
fn size(&mut self) -> Result<u64> {
let size = try_disk!(self.file.seek(SeekFrom::End(0)));
Ok(size)
}
}
scheme/main.rs deleted 100644 → 0
View file @ 3a58139e
#![deny(warnings)]
extern crate redoxfs;
extern crate spin;
extern crate syscall;
use std::env;
use std::fs::File;
use std::io::{Read, Write};
use std::sync::Arc;
use std::thread;
use spin::Mutex;
// use cache::Cache;
use image::Image;
use scheme::FileScheme;
use redoxfs::FileSystem;
use syscall::{Packet, Scheme};
pub mod cache;
pub mod image;
pub mod resource;
pub mod scheme;
enum Status {
Starting,
Running,
Stopping
}
fn main() {
if let Some(path) = env::args().nth(1) {
let status_mutex = Arc::new(Mutex::new(Status::Starting));
let status_daemon = status_mutex.clone();
thread::spawn(move || {
match Image::open(&path) /* .map(|image| Cache::new(image)) */ {
Ok(disk) => match FileSystem::open(Box::new(disk)) {
Ok(fs) => match File::create(":file") {
Ok(mut socket) => {
println!("redoxfs: mounted filesystem {} on file:", path);
*status_daemon.lock() = Status::Running;
let scheme = FileScheme::new("file", fs);
loop {
let mut packet = Packet::default();
socket.read(&mut packet).unwrap();
scheme.handle(&mut packet);
socket.write(&packet).unwrap();
}
},
Err(err) => println!("redoxfs: failed to create file scheme: {}", err)
},
Err(err) => println!("redoxfs: failed to open filesystem {}: {}", path, err)
},
Err(err) => println!("redoxfs: failed to open image {}: {}", path, err)
}
*status_daemon.lock() = Status::Stopping;
});
'waiting: loop {
match *status_mutex.lock() {
Status::Starting => (),
Status::Running => break 'waiting,
Status::Stopping => break 'waiting,
}
thread::yield_now();
}
} else {
println!("redoxfs: no disk image provided");
}
}