feat(hostd): varlink interfaced host controller to manage machine configuration and boot mgmt

systemd-ipc/.gitignore

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+/target

systemd-ipc/Cargo.toml

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+[package]
+name = "systemd-ipc"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+serde.workspace = true
+serde_derive = "1.0.217"
+serde_json = "1.0.135"
+varlink = "11.0.1"
+
+[build-dependencies]
+varlink_generator = "10.1.0"
+walkdir = "2.5.0"
+
+[package.metadata.cargo-machete]
+ignored = ["serde"]

systemd-ipc/build.rs

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+extern crate varlink_generator;
+
+use walkdir::WalkDir;
+
+fn main() {
+    // walk dir to find varlink files
+    for entry in WalkDir::new("src").into_iter().filter_map(|e| e.ok()) {
+        if entry.file_name().to_str().unwrap().ends_with(".varlink") {
+            varlink_generator::cargo_build_tosource(&entry.path().display().to_string(), true);
+        }
+    }
+}

systemd-ipc/src/addrs.rs

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+#[allow(dead_code)]
+pub const SYSTEMD_HOSTNAME: &str = "unix:/run/systemd/io.systemd.Hostname";

systemd-ipc/src/io.systemd.hostname.varlink

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+interface io.systemd.Hostname
+
+method Describe() -> (
+	Hostname: string,
+	StaticHostname: ?string,
+	PrettyHostname: ?string,
+	DefaultHostname: ?string,
+	HostnameSource: string,
+	IconName: ?string,
+	Chassis: ?string,
+	Deployment: ?string,
+	Location: ?string,
+	KernelName: string,
+	KernelRelease: string,
+	KernelVersion: string,
+	OperatingSystemPrettyName: ?string,
+	OperatingSystemCPEName: ?string,
+	OperatingSystemHomeURL: ?string,
+	OperatingSystemSupportEnd: ?int,
+	OperatingSystemReleaseData: ?[]string,
+	MachineInformationData: ?[]string,
+	HardwareVendor: ?string,
+	HardwareModel: ?string,
+	HardwareSerial: ?string,
+	FirmwareVersion: ?string,
+	FirmwareVendor: ?string,
+	FirmwareDate: ?int,
+	MachineID: string,
+	BootID: string,
+	ProductUUID: ?string,
+	VSockCID: ?int
+)

systemd-ipc/src/io_systemd_hostname.rs

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+#![doc = "This file was automatically generated by the varlink rust generator"]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+use serde_derive::{Deserialize, Serialize};
+use std::io::BufRead;
+use std::sync::{Arc, RwLock};
+use varlink::{self, CallTrait};
+#[allow(dead_code)]
+#[derive(Clone, PartialEq, Debug)]
+#[allow(clippy::enum_variant_names)]
+pub enum ErrorKind {
+    Varlink_Error,
+    VarlinkReply_Error,
+}
+impl ::std::fmt::Display for ErrorKind {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
+        match self {
+            ErrorKind::Varlink_Error => write!(f, "Varlink Error"),
+            ErrorKind::VarlinkReply_Error => write!(f, "Varlink error reply"),
+        }
+    }
+}
+pub struct Error(
+    pub ErrorKind,
+    pub Option<Box<dyn std::error::Error + 'static + Send + Sync>>,
+    pub Option<&'static str>,
+);
+impl Error {
+    #[allow(dead_code)]
+    pub fn kind(&self) -> &ErrorKind {
+        &self.0
+    }
+}
+impl From<ErrorKind> for Error {
+    fn from(e: ErrorKind) -> Self {
+        Error(e, None, None)
+    }
+}
+impl std::error::Error for Error {
+    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
+        self.1
+            .as_ref()
+            .map(|e| e.as_ref() as &(dyn std::error::Error + 'static))
+    }
+}
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        std::fmt::Display::fmt(&self.0, f)
+    }
+}
+impl std::fmt::Debug for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        use std::error::Error as StdError;
+        if let Some(ref o) = self.2 {
+            std::fmt::Display::fmt(o, f)?;
+        }
+        std::fmt::Debug::fmt(&self.0, f)?;
+        if let Some(e) = self.source() {
+            std::fmt::Display::fmt("\nCaused by:\n", f)?;
+            std::fmt::Debug::fmt(&e, f)?;
+        }
+        Ok(())
+    }
+}
+#[allow(dead_code)]
+pub type Result<T> = std::result::Result<T, Error>;
+impl From<varlink::Error> for Error {
+    fn from(e: varlink::Error) -> Self {
+        match e.kind() {
+            varlink::ErrorKind::VarlinkErrorReply(r) => Error(
+                ErrorKind::from(r),
+                Some(Box::from(e)),
+                Some(concat!(file!(), ":", line!(), ": ")),
+            ),
+            _ => Error(
+                ErrorKind::Varlink_Error,
+                Some(Box::from(e)),
+                Some(concat!(file!(), ":", line!(), ": ")),
+            ),
+        }
+    }
+}
+#[allow(dead_code)]
+impl Error {
+    pub fn source_varlink_kind(&self) -> Option<&varlink::ErrorKind> {
+        use std::error::Error as StdError;
+        let mut s: &dyn StdError = self;
+        while let Some(c) = s.source() {
+            let k = self
+                .source()
+                .and_then(|e| e.downcast_ref::<varlink::Error>())
+                .map(|e| e.kind());
+            if k.is_some() {
+                return k;
+            }
+            s = c;
+        }
+        None
+    }
+}
+impl From<&varlink::Reply> for ErrorKind {
+    #[allow(unused_variables)]
+    fn from(e: &varlink::Reply) -> Self {
+        match e {
+            _ => ErrorKind::VarlinkReply_Error,
+        }
+    }
+}
+pub trait VarlinkCallError: varlink::CallTrait {}
+impl<'a> VarlinkCallError for varlink::Call<'a> {}
+#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
+pub struct Describe_Reply {
+    pub r#Hostname: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#StaticHostname: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#PrettyHostname: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#DefaultHostname: Option<String>,
+    pub r#HostnameSource: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#IconName: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#Chassis: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#Deployment: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#Location: Option<String>,
+    pub r#KernelName: String,
+    pub r#KernelRelease: String,
+    pub r#KernelVersion: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#OperatingSystemPrettyName: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#OperatingSystemCPEName: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#OperatingSystemHomeURL: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#OperatingSystemSupportEnd: Option<i64>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#OperatingSystemReleaseData: Option<Vec<String>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#MachineInformationData: Option<Vec<String>>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#HardwareVendor: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#HardwareModel: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#HardwareSerial: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#FirmwareVersion: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#FirmwareVendor: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#FirmwareDate: Option<i64>,
+    pub r#MachineID: String,
+    pub r#BootID: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#ProductUUID: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub r#VSockCID: Option<i64>,
+}
+impl varlink::VarlinkReply for Describe_Reply {}
+#[derive(Serialize, Deserialize, Debug, PartialEq, Clone)]
+pub struct Describe_Args {}
+pub trait Call_Describe: VarlinkCallError {
+    fn reply(
+        &mut self,
+        r#Hostname: String,
+        r#StaticHostname: Option<String>,
+        r#PrettyHostname: Option<String>,
+        r#DefaultHostname: Option<String>,
+        r#HostnameSource: String,
+        r#IconName: Option<String>,
+        r#Chassis: Option<String>,
+        r#Deployment: Option<String>,
+        r#Location: Option<String>,
+        r#KernelName: String,
+        r#KernelRelease: String,
+        r#KernelVersion: String,
+        r#OperatingSystemPrettyName: Option<String>,
+        r#OperatingSystemCPEName: Option<String>,
+        r#OperatingSystemHomeURL: Option<String>,
+        r#OperatingSystemSupportEnd: Option<i64>,
+        r#OperatingSystemReleaseData: Option<Vec<String>>,
+        r#MachineInformationData: Option<Vec<String>>,
+        r#HardwareVendor: Option<String>,
+        r#HardwareModel: Option<String>,
+        r#HardwareSerial: Option<String>,
+        r#FirmwareVersion: Option<String>,
+        r#FirmwareVendor: Option<String>,
+        r#FirmwareDate: Option<i64>,
+        r#MachineID: String,
+        r#BootID: String,
+        r#ProductUUID: Option<String>,
+        r#VSockCID: Option<i64>,
+    ) -> varlink::Result<()> {
+        self.reply_struct(
+            Describe_Reply {
+                r#Hostname,
+                r#StaticHostname,
+                r#PrettyHostname,
+                r#DefaultHostname,
+                r#HostnameSource,
+                r#IconName,
+                r#Chassis,
+                r#Deployment,
+                r#Location,
+                r#KernelName,
+                r#KernelRelease,
+                r#KernelVersion,
+                r#OperatingSystemPrettyName,
+                r#OperatingSystemCPEName,
+                r#OperatingSystemHomeURL,
+                r#OperatingSystemSupportEnd,
+                r#OperatingSystemReleaseData,
+                r#MachineInformationData,
+                r#HardwareVendor,
+                r#HardwareModel,
+                r#HardwareSerial,
+                r#FirmwareVersion,
+                r#FirmwareVendor,
+                r#FirmwareDate,
+                r#MachineID,
+                r#BootID,
+                r#ProductUUID,
+                r#VSockCID,
+            }
+            .into(),
+        )
+    }
+}
+impl<'a> Call_Describe for varlink::Call<'a> {}
+pub trait VarlinkInterface {
+    fn describe(&self, call: &mut dyn Call_Describe) -> varlink::Result<()>;
+    fn call_upgraded(
+        &self,
+        _call: &mut varlink::Call,
+        _bufreader: &mut dyn BufRead,
+    ) -> varlink::Result<Vec<u8>> {
+        Ok(Vec::new())
+    }
+}
+pub trait VarlinkClientInterface {
+    fn describe(&mut self) -> varlink::MethodCall<Describe_Args, Describe_Reply, Error>;
+}
+#[allow(dead_code)]
+pub struct VarlinkClient {
+    connection: Arc<RwLock<varlink::Connection>>,
+}
+impl VarlinkClient {
+    #[allow(dead_code)]
+    pub fn new(connection: Arc<RwLock<varlink::Connection>>) -> Self {
+        VarlinkClient { connection }
+    }
+}
+impl VarlinkClientInterface for VarlinkClient {
+    fn describe(&mut self) -> varlink::MethodCall<Describe_Args, Describe_Reply, Error> {
+        varlink::MethodCall::<Describe_Args, Describe_Reply, Error>::new(
+            self.connection.clone(),
+            "io.systemd.Hostname.Describe",
+            Describe_Args {},
+        )
+    }
+}
+#[allow(dead_code)]
+pub struct VarlinkInterfaceProxy {
+    inner: Box<dyn VarlinkInterface + Send + Sync>,
+}
+#[allow(dead_code)]
+pub fn new(inner: Box<dyn VarlinkInterface + Send + Sync>) -> VarlinkInterfaceProxy {
+    VarlinkInterfaceProxy { inner }
+}
+impl varlink::Interface for VarlinkInterfaceProxy {
+    fn get_description(&self) -> &'static str {
+        "interface io.systemd.Hostname\n\nmethod Describe() -> (\n\tHostname: string,\n\tStaticHostname: ?string,\n\tPrettyHostname: ?string,\n\tDefaultHostname: ?string,\n\tHostnameSource: string,\n\tIconName: ?string,\n\tChassis: ?string,\n\tDeployment: ?string,\n\tLocation: ?string,\n\tKernelName: string,\n\tKernelRelease: string,\n\tKernelVersion: string,\n\tOperatingSystemPrettyName: ?string,\n\tOperatingSystemCPEName: ?string,\n\tOperatingSystemHomeURL: ?string,\n\tOperatingSystemSupportEnd: ?int,\n\tOperatingSystemReleaseData: ?[]string,\n\tMachineInformationData: ?[]string,\n\tHardwareVendor: ?string,\n\tHardwareModel: ?string,\n\tHardwareSerial: ?string,\n\tFirmwareVersion: ?string,\n\tFirmwareVendor: ?string,\n\tFirmwareDate: ?int,\n\tMachineID: string,\n\tBootID: string,\n\tProductUUID: ?string,\n\tVSockCID: ?int\n)\n"
+    }
+    fn get_name(&self) -> &'static str {
+        "io.systemd.Hostname"
+    }
+    fn call_upgraded(
+        &self,
+        call: &mut varlink::Call,
+        bufreader: &mut dyn BufRead,
+    ) -> varlink::Result<Vec<u8>> {
+        self.inner.call_upgraded(call, bufreader)
+    }
+    fn call(&self, call: &mut varlink::Call) -> varlink::Result<()> {
+        let req = call.request.unwrap();
+        match req.method.as_ref() {
+            "io.systemd.Hostname.Describe" => self.inner.describe(call as &mut dyn Call_Describe),
+            m => call.reply_method_not_found(String::from(m)),
+        }
+    }
+}

systemd-ipc/src/lib.rs

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+pub mod addrs;
+pub mod io_systemd_hostname;