🦺 Support the <pidfile>path</pidfile> element

src/config.rs

@@ -1,3 +1,5 @@
+use std::path::PathBuf;
+
 use anyhow::{Error, Result};
 use quick_xml::{events::Event, Reader};
 use serde::Deserialize;
@@ -28,7 +30,9 @@ pub struct BusConfig {
     #[query(".keep_umask")]
     // TODO: consider finding a way to make this `bool` instead of `Option<()>`
     pub keep_umask: Option<()>,
-    /// If true, the bus daemon will log to syslog.
+    /// The bus daemon will write its pid to the specified file.
+    #[query(".pidfile")]
+    pub pidfile: Option<PathBuf>,
     #[query(".syslog")]
     // TODO: consider finding a way to make this `bool` instead of `Option<()>`
     pub syslog: Option<()>,
@@ -175,6 +179,26 @@ mod tests {
         );
     }
 
+    #[test]
+    fn bus_config_parse_with_pidfile_ok() {
+        let input = r#"<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
+        "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+        <busconfig>
+            <pidfile>/var/run/busd.pid</pidfile>
+        </busconfig>
+        "#;
+
+        let busconfig = BusConfig::parse(input).expect("should parse XML input");
+
+        assert_eq!(
+            busconfig,
+            BusConfig {
+                pidfile: Some(PathBuf::from("/var/run/busd.pid")),
+                ..Default::default()
+            }
+        );
+    }
+
     #[test]
     fn bus_config_parse_with_type_ok() {
         let input = r#"<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"