starnix_core/vfs/
wd_number.rs

1// Copyright 2023 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use starnix_syscalls::{SyscallArg, SyscallResult};
6use std::fmt;
7use zerocopy::{FromBytes, Immutable, IntoBytes, KnownLayout};
8
9/// Watch descriptor returned by inotify_add_watch(2).
10///
11/// See inotify(7) for details.
12#[derive(
13    Hash,
14    PartialEq,
15    Eq,
16    PartialOrd,
17    Ord,
18    Debug,
19    Copy,
20    Clone,
21    IntoBytes,
22    KnownLayout,
23    FromBytes,
24    Immutable,
25)]
26#[repr(transparent)]
27pub struct WdNumber(i32);
28
29impl WdNumber {
30    pub fn from_raw(n: i32) -> WdNumber {
31        WdNumber(n)
32    }
33
34    pub fn raw(&self) -> i32 {
35        self.0
36    }
37}
38
39impl std::convert::From<WdNumber> for SyscallResult {
40    fn from(value: WdNumber) -> Self {
41        value.raw().into()
42    }
43}
44
45impl std::convert::From<SyscallArg> for WdNumber {
46    fn from(value: SyscallArg) -> Self {
47        WdNumber::from_raw(value.into())
48    }
49}
50
51impl fmt::Display for WdNumber {
52    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
53        write!(f, "wd({})", self.0)
54    }
55}
starnix_core/vfs/wd_number.rs

starnix_core/vfs/
wd_number.rs
