feat(about): show kernel version

cosmic-settings/src/pages/system/about.rs

@@ -244,6 +244,7 @@ fn os() -> Section<crate::pages::Message> {
 
     let os = descriptions.insert(fl!("about-os", "os"));
     let os_arch = descriptions.insert(fl!("about-os", "os-architecture"));
+    let kernel = descriptions.insert(fl!("about-os", "kernel"));
     let desktop = descriptions.insert(fl!("about-os", "desktop-environment"));
     let windowing_system = descriptions.insert(fl!("about-os", "windowing-system"));
 
@@ -262,6 +263,10 @@ fn os() -> Section<crate::pages::Message> {
                     &*desc[os_arch],
                     text::body(&page.info.os_architecture),
                 ))
+                .add(settings::flex_item(
+                    &*desc[kernel],
+                    text::body(&page.info.kernel_version),
+                ))
                 .add(settings::flex_item(
                     &*desc[desktop],
                     text::body(&page.info.desktop_environment),

i18n/de/cosmic_settings.ftl

@@ -785,6 +785,7 @@ about-hardware = Hardware
 about-os = Betriebssystem
     .os = Betriebssystem
     .os-architecture = Betriebssystemarchitektur
+    .kernel = Kernel Version
     .desktop-environment = Desktopumgebung
     .windowing-system = Fenstersystem
 about-related = Zugehörige Einstellungen

i18n/en/cosmic_settings.ftl

@@ -882,6 +882,7 @@ about-hardware = Hardware
 about-os = Operating system
     .os = Operating system
     .os-architecture = Operating system architecture
+    .kernel = Kernel version
     .desktop-environment = Desktop environment
     .windowing-system = Windowing system
 

pages/system/src/about.rs

@@ -25,6 +25,7 @@ pub struct Info {
     pub memory: String,
     pub operating_system: String,
     pub os_architecture: String,
+    pub kernel_version: String,
     pub processor: String,
     pub windowing_system: String,
 }
@@ -37,6 +38,9 @@ impl Info {
         architecture(&bump, &mut info.os_architecture);
         bump.reset();
 
+        kernel_version(&bump, &mut info.kernel_version);
+        bump.reset();
+
         hardware_model(&bump, &mut info.hardware_model);
         bump.reset();
 
@@ -116,6 +120,15 @@ pub fn architecture(bump: &Bump, arch: &mut String) {
     }
 }
 
+pub fn kernel_version(bump: &Bump, kernel: &mut String) {
+    let buffer = &mut bumpalo::collections::Vec::new_in(bump);
+    if let Some(value) = read_to_string("/proc/version", buffer) {
+        if let Some(version) = value.split_whitespace().nth(2) {
+            kernel.push_str(version.trim());
+        }
+    }
+}
+
 pub fn hardware_model(bump: &Bump, hardware_model: &mut String) {
     let buffer = &mut bumpalo::collections::Vec::new_in(bump);
     if let Some(mut sys_vendor) = read_to_string(SYS_VENDOR, buffer) {