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//! An asynchronous and high-level implementation of the Filesystem in Userspace protocol.
//!
//! `blown-fuse`
#![forbid(unsafe_code)]
#![feature(try_trait_v2, doc_cfg)]
#[cfg(not(target_os = "linux"))]
compile_error!("Unsupported OS");
use std::time::{SystemTime, UNIX_EPOCH};
pub use nix;
#[cfg(any(feature = "server", doc))]
#[doc(cfg(feature = "server"))]
pub use crate::fuse::*;
#[cfg(any(feature = "client", doc, test))]
#[doc(cfg(feature = "client"))]
pub mod client;
mod proto;
mod util;
#[cfg(any(feature = "server", doc))]
#[doc(cfg(feature = "server"))]
mod fuse;
#[doc(no_inline)]
pub use nix::errno::Errno;
pub use util::{FuseError, FuseResult};
#[derive(Copy, Clone, Eq, PartialEq)]
pub struct Ttl {
seconds: u64,
nanoseconds: u32,
}
#[derive(Copy, Clone, Default, Eq, PartialEq)]
pub struct Timestamp {
seconds: u64,
nanoseconds: u32,
}
/// Inode number.
///
/// This is a public newtype. Users are expected to inspect the underlying `u64` and construct
/// arbitrary `Ino` objects.
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
pub struct Ino(pub u64);
impl Ino {
/// The invalid inode number, mostly useful for internal aspects of the FUSE protocol.
pub const NULL: Self = Ino(0);
/// The inode number of the root inode as observed by a FUSE client. Other libraries refer to
/// this as `FUSE_ROOT_ID`.
///
/// Note that a mounted session will remember the inode number given by `Inode::ino()` for the
/// root inode at initialization and transparently swap between it and `Ino::ROOT`. During
/// dispatch, requests targeted at `Ino::ROOT` will have this value replaced by the stored root
/// number, while replies involving the root inode will always report `Ino::ROOT` to the FUSE
/// client. Therefore, filesystems do not have to be aware of `Ino::ROOT` in most cases.
pub const ROOT: Self = Ino(proto::ROOT_ID);
/// Extracts the raw inode number.
pub fn as_raw(self) -> u64 {
self.0
}
}
impl std::fmt::Display for Ino {
fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(formatter, "{}", self.0)
}
}
impl Ttl {
pub const NULL: Self = Ttl {
seconds: 0,
nanoseconds: 0,
};
pub const MAX: Self = Ttl {
seconds: u64::MAX,
nanoseconds: u32::MAX,
};
pub fn new(seconds: u64, nanoseconds: u32) -> Ttl {
assert!(nanoseconds < 1_000_000_000);
Ttl {
seconds,
nanoseconds,
}
}
pub fn seconds(&self) -> u64 {
self.seconds
}
pub fn nanoseconds(&self) -> u32 {
self.nanoseconds
}
}
impl From<SystemTime> for Timestamp {
fn from(time: SystemTime) -> Self {
let duration = time.duration_since(UNIX_EPOCH).unwrap();
Timestamp {
seconds: duration.as_secs(),
nanoseconds: duration.subsec_nanos(),
}
}
}
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