diff --git a/src/header/sys_time/mod.rs b/src/header/sys_time/mod.rs
index 93b70b107d..9fdfff8dfc 100644
--- a/src/header/sys_time/mod.rs
+++ b/src/header/sys_time/mod.rs
@@ -81,7 +81,7 @@ pub struct timezone {
 #[deprecated]
 #[no_mangle]
 pub unsafe extern "C" fn getitimer(which: c_int, value: *mut itimerval) -> c_int {
-    Sys::getitimer(which, value)
+    Sys::getitimer(which, &mut *value)
         .map(|()| 0)
         .or_minus_one_errno()
 }
@@ -114,7 +114,7 @@ pub unsafe extern "C" fn setitimer(
     value: *const itimerval,
     ovalue: *mut itimerval,
 ) -> c_int {
-    Sys::setitimer(which, value, ovalue)
+    Sys::setitimer(which, &*value, ovalue.as_mut())
         .map(|()| 0)
         .or_minus_one_errno()
 }
diff --git a/src/platform/linux/signal.rs b/src/platform/linux/signal.rs
index 139af7eff5..ec92d07dfa 100644
--- a/src/platform/linux/signal.rs
+++ b/src/platform/linux/signal.rs
@@ -15,8 +15,10 @@ use crate::{
 };
 
 impl PalSignal for Sys {
-    unsafe fn getitimer(which: c_int, out: *mut itimerval) -> Result<()> {
-        e_raw(syscall!(GETITIMER, which, out))?;
+    fn getitimer(which: c_int, out: &mut itimerval) -> Result<()> {
+        unsafe {
+            e_raw(syscall!(GETITIMER, which, out as *mut _))?;
+        }
         Ok(())
     }
 
@@ -49,8 +51,15 @@ impl PalSignal for Sys {
         Ok(())
     }
 
-    unsafe fn setitimer(which: c_int, new: *const itimerval, old: *mut itimerval) -> Result<()> {
-        e_raw(unsafe { syscall!(SETITIMER, which, new, old) })?;
+    fn setitimer(which: c_int, new: &itimerval, old: Option<&mut itimerval>) -> Result<()> {
+        e_raw(unsafe {
+            syscall!(
+                SETITIMER,
+                which,
+                new as *const _,
+                old.map_or_else(core::ptr::null_mut, |r| r as *mut _)
+            )
+        })?;
         Ok(())
     }
 
diff --git a/src/platform/pal/signal.rs b/src/platform/pal/signal.rs
index 695dcb65d9..73bc50ac57 100644
--- a/src/platform/pal/signal.rs
+++ b/src/platform/pal/signal.rs
@@ -9,7 +9,7 @@ use crate::{
 };
 
 pub trait PalSignal: Pal {
-    unsafe fn getitimer(which: c_int, out: *mut itimerval) -> Result<()>;
+    fn getitimer(which: c_int, out: &mut itimerval) -> Result<()>;
 
     fn kill(pid: pid_t, sig: c_int) -> Result<()>;
 
@@ -19,7 +19,7 @@ pub trait PalSignal: Pal {
 
     fn raise(sig: c_int) -> Result<()>;
 
-    unsafe fn setitimer(which: c_int, new: *const itimerval, old: *mut itimerval) -> Result<()>;
+    fn setitimer(which: c_int, new: &itimerval, old: Option<&mut itimerval>) -> Result<()>;
 
     fn sigaction(sig: c_int, act: Option<&sigaction>, oact: Option<&mut sigaction>) -> Result<()>;
 
diff --git a/src/platform/redox/signal.rs b/src/platform/redox/signal.rs
index 4c8500ee36..e4a16c9443 100644
--- a/src/platform/redox/signal.rs
+++ b/src/platform/redox/signal.rs
@@ -46,21 +46,20 @@ const _: () = {
 };
 
 impl PalSignal for Sys {
-    unsafe fn getitimer(which: c_int, out: *mut itimerval) -> Result<()> {
+    fn getitimer(which: c_int, out: &mut itimerval) -> Result<()> {
         let path = match which {
             ITIMER_REAL => "/scheme/itimer/1",
             _ => return Err(Errno(EINVAL)),
         };
-
-        let fd = FdGuard::new(syscall::open(path, syscall::O_RDONLY | syscall::O_CLOEXEC)?);
+        // TODO: implement setitimer
+        // let fd = FdGuard::new(syscall::open(path, syscall::O_RDONLY | syscall::O_CLOEXEC)?);
+        // let count = syscall::read(*fd, &mut spec)?;
 
         let mut spec = syscall::ITimerSpec::default();
-        let count = syscall::read(*fd, &mut spec)?;
-
-        (*out).it_interval.tv_sec = spec.it_interval.tv_sec as time_t;
-        (*out).it_interval.tv_usec = spec.it_interval.tv_nsec / 1000;
-        (*out).it_value.tv_sec = spec.it_value.tv_sec as time_t;
-        (*out).it_value.tv_usec = spec.it_value.tv_nsec / 1000;
+        out.it_interval.tv_sec = spec.it_interval.tv_sec as time_t;
+        out.it_interval.tv_usec = spec.it_interval.tv_nsec / 1000;
+        out.it_value.tv_sec = spec.it_value.tv_sec as time_t;
+        out.it_value.tv_usec = spec.it_value.tv_nsec / 1000;
 
         Ok(())
     }
@@ -87,25 +86,30 @@ impl PalSignal for Sys {
         unsafe { Self::rlct_kill(Self::current_os_tid(), sig as _) }
     }
 
-    unsafe fn setitimer(which: c_int, new: *const itimerval, old: *mut itimerval) -> Result<()> {
-        let path = match which {
+    fn setitimer(which: c_int, _new: &itimerval, old: Option<&mut itimerval>) -> Result<()> {
+        let _path = match which {
             ITIMER_REAL => "/scheme/itimer/1",
             _ => return Err(Errno(EINVAL)),
         };
-
-        let fd = FdGuard::new(syscall::open(path, syscall::O_RDWR | syscall::O_CLOEXEC)?);
+        // TODO
+        eprintln!("relibc: todo: implement setitimer");
 
         let mut spec = syscall::ITimerSpec::default();
 
+        if let Some(old) = old {
+            old.it_interval.tv_sec = spec.it_interval.tv_sec as time_t;
+            old.it_interval.tv_usec = spec.it_interval.tv_nsec / 1000;
+            old.it_value.tv_sec = spec.it_value.tv_sec as time_t;
+            old.it_value.tv_usec = spec.it_value.tv_nsec / 1000;
+        }
+
+        /*
+        let fd = FdGuard::new(syscall::open(path, syscall::O_RDWR | syscall::O_CLOEXEC)?);
+
+
         let _ = syscall::read(*fd, &mut spec)?;
 
         unsafe {
-            if !old.is_null() {
-                (*old).it_interval.tv_sec = spec.it_interval.tv_sec as time_t;
-                (*old).it_interval.tv_usec = spec.it_interval.tv_nsec / 1000;
-                (*old).it_value.tv_sec = spec.it_value.tv_sec as time_t;
-                (*old).it_value.tv_usec = spec.it_value.tv_nsec / 1000;
-            }
 
             spec.it_interval.tv_sec = (*new).it_interval.tv_sec as i64;
             spec.it_interval.tv_nsec = (*new).it_interval.tv_usec * 1000;
@@ -114,6 +118,7 @@ impl PalSignal for Sys {
         }
 
         let _ = syscall::write(*fd, &spec)?;
+        */
         Ok(())
     }