1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/rust/nix/src/sys/utsname.rs b/third_party/rust/nix/src/sys/utsname.rs
new file mode 100644
index 0000000000..e33d0739a0
--- /dev/null
+++ b/third_party/rust/nix/src/sys/utsname.rs
@@ -0,0 +1,68 @@
+use std::mem;
+use libc::{self, c_char};
+use std::ffi::CStr;
+use std::str::from_utf8_unchecked;
+
+#[repr(C)]
+#[derive(Clone, Copy)]
+#[allow(missing_debug_implementations)]
+pub struct UtsName(libc::utsname);
+
+impl UtsName {
+    pub fn sysname(&self) -> &str {
+        to_str(&(&self.0.sysname as *const c_char ) as *const *const c_char)
+    }
+
+    pub fn nodename(&self) -> &str {
+        to_str(&(&self.0.nodename as *const c_char ) as *const *const c_char)
+    }
+
+    pub fn release(&self) -> &str {
+        to_str(&(&self.0.release as *const c_char ) as *const *const c_char)
+    }
+
+    pub fn version(&self) -> &str {
+        to_str(&(&self.0.version as *const c_char ) as *const *const c_char)
+    }
+
+    pub fn machine(&self) -> &str {
+        to_str(&(&self.0.machine as *const c_char ) as *const *const c_char)
+    }
+}
+
+pub fn uname() -> UtsName {
+    unsafe {
+        let mut ret: UtsName = mem::uninitialized();
+        libc::uname(&mut ret.0);
+        ret
+    }
+}
+
+#[inline]
+fn to_str<'a>(s: *const *const c_char) -> &'a str {
+    unsafe {
+        let res = CStr::from_ptr(*s).to_bytes();
+        from_utf8_unchecked(res)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    #[cfg(target_os = "linux")]
+    #[test]
+    pub fn test_uname_linux() {
+        assert_eq!(super::uname().sysname(), "Linux");
+    }
+
+    #[cfg(any(target_os = "macos", target_os = "ios"))]
+    #[test]
+    pub fn test_uname_darwin() {
+        assert_eq!(super::uname().sysname(), "Darwin");
+    }
+
+    #[cfg(target_os = "freebsd")]
+    #[test]
+    pub fn test_uname_freebsd() {
+        assert_eq!(super::uname().sysname(), "FreeBSD");
+    }
+}