Add the initial implementation of reboot()

1 files changed, 36 insertions, 0 deletions

diff --git a/src/sys/reboot.rs b/src/sys/reboot.rs
new file mode 100644
index 00000000..d537401f
--- /dev/null
+++ b/src/sys/reboot.rs
@@ -0,0 +1,36 @@
+use {Errno, Error, Result};
+use libc::c_int;
+use void::Void;
+use std::mem::drop;
+
+#[derive(Copy, Clone, Debug, Eq, PartialEq)]
+pub enum RebootMode {
+    Halt = 0xcdef0123,
+    kexec = 0x45584543,
+    PowerOff = 0x4321fedc,
+    Restart = 0x1234567,
+    // we do not support Restart2,
+    Suspend = 0xd000fce1,
+}
+
+pub fn reboot(how: RebootMode) -> Result<Void> {
+    unsafe {
+        ext::reboot(how as c_int)
+    };
+    Err(Error::Sys(Errno::last()))
+}
+
+#[allow(overflowing_literals)]
+pub fn set_cad_enabled(enable: bool) -> Result<()> {
+    let res = unsafe {
+        ext::reboot(if enable { 0x89abcdef } else { 0 })
+    };
+    Errno::result(res).map(drop)
+}
+
+mod ext {
+    use libc::c_int;
+    extern {
+        pub fn reboot(cmd: c_int) -> c_int;
+    }
+}