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work being done based on a FUSE example

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Able 2021-11-26 03:44:41 -06:00
parent 21a31b3f53
commit c8c090dce3
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1
.gitignore vendored Normal file
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/target

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Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "afs-fuse"
version = "0.1.0"
dependencies = [
"fuse",
"libc",
"time",
]
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Cargo.toml Normal file
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[package]
name = "afs-fuse"
version = "0.1.0"
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
fuse = "0.3.1"
time="*"
libc="*"

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run.sh Normal file
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mkdir /tmp/rust-fuse
cargo run /tmp/rust-fuse
fusermount -u /tmp/rust-fuse

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rust-toolchain Normal file
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nightly

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src/main.rs Normal file
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#![feature(libc)]
extern crate fuse;
extern crate libc;
extern crate time;
use std::ffi::OsStr;
use fuse::{
FileAttr, FileType, Filesystem, ReplyAttr, ReplyData, ReplyDirectory, ReplyEntry, Request,
};
use libc::ENOENT;
use std::env;
use std::path::Path;
use time::Timespec;
const TTL: Timespec = Timespec { sec: 1, nsec: 0 }; // 1 second
const CREATE_TIME: Timespec = Timespec {
sec: 1381237736,
nsec: 0,
}; // 2013-10-08 08:56
const HELLO_DIR_ATTR: FileAttr = FileAttr {
ino: 1,
size: 0,
blocks: 0,
atime: CREATE_TIME,
mtime: CREATE_TIME,
ctime: CREATE_TIME,
crtime: CREATE_TIME,
kind: FileType::Directory,
perm: 0o755,
nlink: 2,
uid: 501,
gid: 20,
rdev: 0,
flags: 0,
};
const HELLO_TXT_CONTENT: &'static str = "Hello World!\n";
const HELLO_TXT_ATTR: FileAttr = FileAttr {
ino: 2,
size: 13,
blocks: 1,
atime: CREATE_TIME,
mtime: CREATE_TIME,
ctime: CREATE_TIME,
crtime: CREATE_TIME,
kind: FileType::RegularFile,
perm: 0o644,
nlink: 1,
uid: 501,
gid: 20,
rdev: 0,
flags: 0,
};
struct HelloFS;
impl Filesystem for HelloFS {
fn lookup(&mut self, _req: &Request, parent: u64, name: &OsStr, reply: ReplyEntry) {
if parent == 1 && name.to_str() == Some("hello.txt") {
reply.entry(&TTL, &HELLO_TXT_ATTR, 0);
} else {
reply.error(ENOENT);
}
}
fn getattr(&mut self, _req: &Request, ino: u64, reply: ReplyAttr) {
match ino {
1 => reply.attr(&TTL, &HELLO_DIR_ATTR),
2 => reply.attr(&TTL, &HELLO_TXT_ATTR),
_ => reply.error(ENOENT),
}
}
fn read(
&mut self,
_req: &Request,
ino: u64,
_fh: u64,
offset: i64,
_size: u32,
reply: ReplyData,
) {
if ino == 2 {
reply.data(&HELLO_TXT_CONTENT.as_bytes()[offset as usize..]);
} else {
reply.error(ENOENT);
}
}
fn readdir(
&mut self,
_req: &Request,
ino: u64,
_fh: u64,
offset: i64,
mut reply: ReplyDirectory,
) {
if ino == 1 {
if offset == 0 {
reply.add(1, 0, FileType::Directory, ".");
reply.add(1, 1, FileType::Directory, "..");
reply.add(2, 2, FileType::RegularFile, "hello.txt");
}
reply.ok();
} else {
reply.error(ENOENT);
}
}
}
fn main() {
let mountpoint = env::args_os().nth(1).unwrap();
fuse::mount(HelloFS, &mountpoint, &[]);
}