1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
//! An asynchronous and high-level implementation of the Filesystem in Userspace protocol.
//!
//! `blown-fuse`
#![forbid(unsafe_code)]
#![feature(try_trait_v2)]
#[cfg(not(target_os = "linux"))]
compile_error!("Unsupported OS");
use std::time::{SystemTime, UNIX_EPOCH};
pub use nix;
pub use crate::fuse::*;
pub mod client;
mod proto;
mod util;
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: i64,
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, Ord, PartialOrd, 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 Timestamp {
pub fn new(seconds: i64, nanoseconds: u32) -> Self {
Timestamp {
seconds,
nanoseconds,
}
}
}
impl From<SystemTime> for Timestamp {
fn from(time: SystemTime) -> Self {
let (seconds, nanoseconds) = match time.duration_since(UNIX_EPOCH) {
Ok(duration) => {
let secs = duration.as_secs().try_into().unwrap();
(secs, duration.subsec_nanos())
}
Err(before_epoch) => {
let duration = before_epoch.duration();
let secs = -i64::try_from(duration.as_secs()).unwrap();
(secs, duration.subsec_nanos())
}
};
Timestamp {
seconds,
nanoseconds,
}
}
}
|
