Implement private function to get version on illumos

os_info/src/illumos/mod.rs

@@ -8,7 +8,7 @@ use crate::{bitness, uname::uname, Info, Type, Version};
 pub fn current_platform() -> Info {
     trace!("illumos::current_platform is called");
 
-    let version = uname()
+    let version = get_version()
         .map(Version::from_string)
         .unwrap_or_else(|| Version::Unknown);
 
@@ -23,6 +23,24 @@ pub fn current_platform() -> Info {
     info
 }
 
+fn get_version() -> Option<String> {
+    Command::new("uname")
+        .arg("-v")
+        .output()
+        .map_err(|e| {
+            error!("Failed to invoke 'uname': {:?}", e);
+        })
+        .ok()
+        .and_then(|out| {
+            if out.status.success() {
+                Some(String::from_utf8_lossy(&out.stdout).trim_end().to_owned())
+            } else {
+                log::error!("'uname' invocation error: {:?}", out);
+                None
+            }
+        })
+}
+
 fn get_os() -> Type {
     let os = Command::new("uname")
         .arg("-o")