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feat(kernel): fetch the available kernel parameters

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Orhun Parmaksız 2021-10-18 00:38:57 +03:00
parent 71d3da2cf8
commit 146ec1bba9
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5 changed files with 117 additions and 0 deletions
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71
Cargo.lock generated
View file

@ -17,6 +17,12 @@ version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
[[package]]
name = "bitflags"
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "block-buffer"
version = "0.7.3"
@ -329,6 +335,15 @@ version = "0.6.25"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
[[package]]
name = "same-file"
version = "1.0.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"winapi-util",
]
[[package]]
name = "scopeguard"
version = "1.1.0"
@ -358,6 +373,19 @@ dependencies = [
"unicode-xid",
]
[[package]]
name = "sysctl"
version = "0.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "963488c73b34185a9028742c2be0219ed1d8558e59f85c3b466a4f54affba936"
dependencies = [
"bitflags",
"byteorder",
"libc",
"thiserror",
"walkdir",
]
[[package]]
name = "systeroid"
version = "0.1.0"
@ -372,6 +400,7 @@ dependencies = [
name = "systeroid-core"
version = "0.1.0"
dependencies = [
"sysctl",
"thiserror",
]
@ -428,3 +457,45 @@ name = "unicode-xid"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
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dependencies = [
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"winapi",
"winapi-util",
]
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version = "0.3.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
dependencies = [
"winapi-i686-pc-windows-gnu",
"winapi-x86_64-pc-windows-gnu",
]
[[package]]
name = "winapi-i686-pc-windows-gnu"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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version = "0.1.5"
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dependencies = [
"winapi",
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[[package]]
name = "winapi-x86_64-pc-windows-gnu"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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1
systeroid-core/Cargo.toml
View file

@ -6,3 +6,4 @@ edition = "2021"
[dependencies]
thiserror = "1.0.29"
sysctl = "0.4.2"

3
systeroid-core/src/lib.rs
View file

@ -5,6 +5,9 @@
/// Linux kernel documentation.
pub mod docs;
/// Linux kernel parameter handler.
pub mod sysctl;
/// File reader.
pub mod reader;

35
systeroid-core/src/sysctl.rs Normal file
View file

@ -0,0 +1,35 @@
use sysctl::{CtlIter, Sysctl as SysctlImpl};
/// Representation of a kernel parameter.
pub struct Parameter {
/// Name of the kernel parameter.
pub name: String,
/// Value of the kernel parameter.
pub value: String,
/// Description of the kernel parameter
pub description: Option<String>,
}
/// Sysctl wrapper for managing the kernel parameters.
pub struct Sysctl {
/// Available kernel parameters.
pub parameters: Vec<Parameter>,
}
impl Sysctl {
/// Constructs a new instance by fetching the available kernel parameters.
pub fn init() -> Self {
Self {
parameters: CtlIter::root()
.filter_map(Result::ok)
.filter_map(|ctl| {
Some(Parameter {
name: ctl.name().ok()?,
value: ctl.value_string().ok()?,
description: ctl.description().ok(),
})
})
.collect(),
}
}
}

7
systeroid/src/lib.rs
View file

@ -12,10 +12,13 @@ use std::sync::Mutex;
use systeroid_core::docs::SysctlSection;
use systeroid_core::error::{Error, Result};
use systeroid_core::reader;
use systeroid_core::sysctl::Sysctl;
use systeroid_parser::parser::RstParser;
/// Runs `systeroid`.
pub fn run(args: Args) -> Result<()> {
let sysctl = Sysctl::init();
if let Some(kernel_docs) = args.kernel_docs {
let sysctl_docs = kernel_docs.join("admin-guide").join("sysctl");
if !sysctl_docs.exists() {
@ -49,5 +52,9 @@ pub fn run(args: Args) -> Result<()> {
}
}
for param in sysctl.parameters {
println!("{}: {} ({:?})", param.name, param.value, param.description);
}
Ok(())
}