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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"); } }