signal adding sig(timed)wait implementations

src/platform/linux/signal.rs

@@ -5,8 +5,9 @@ use super::{
     e, Sys,
 };
 use crate::header::{
-    signal::{NSIG, sigaction, sigset_t, stack_t},
+    signal::{NSIG, sigaction, siginfo_t, sigset_t, stack_t},
     sys_time::itimerval,
+    time::timespec,
 };
 
 impl PalSignal for Sys {
@@ -62,4 +63,8 @@ impl PalSignal for Sys {
     fn sigsuspend(set: *const sigset_t) -> c_int {
         e(unsafe { syscall!(RT_SIGSUSPEND, set, NSIG/8) }) as c_int
     }
+
+    fn sigtimedwait(set: *const sigset_t, sig: *mut siginfo_t, tp: *const timespec) -> c_int {
+        e(unsafe { syscall!(RT_SIGTIMEDWAIT, set, sig, tp, NSIG/8) }) as c_int
+    }
 }

src/platform/pal/signal.rs

@@ -1,7 +1,8 @@
 use super::super::{types::*, Pal};
 use crate::header::{
-    signal::{sigaction, sigset_t, stack_t},
+    signal::{sigaction, siginfo_t, sigset_t, stack_t},
     sys_time::itimerval,
+    time::timespec,
 };
 
 pub trait PalSignal: Pal {
@@ -24,4 +25,6 @@ pub trait PalSignal: Pal {
     fn sigprocmask(how: c_int, set: *const sigset_t, oset: *mut sigset_t) -> c_int;
 
     fn sigsuspend(set: *const sigset_t) -> c_int;
+
+    fn sigtimedwait(set: *const sigset_t, sig: *mut siginfo_t, tp: *const timespec) -> c_int;
 }

src/platform/redox/signal.rs

@@ -8,8 +8,9 @@ use super::{
 use crate::{
     header::{
         errno::{EINVAL, ENOSYS},
-        signal::{sigaction, sigset_t, stack_t},
+        signal::{sigaction, siginfo_t, sigset_t, stack_t},
         sys_time::{itimerval, ITIMER_REAL},
+        time::timespec,
     },
     platform::errno,
 };
@@ -166,4 +167,11 @@ impl PalSignal for Sys {
         }
         -1
     }
+
+    fn sigtimedwait(set: *const sigset_t, sig: *mut siginfo_t, tp: *const timespec) -> c_int {
+        unsafe {
+            errno = ENOSYS;
+        }
+        -1
+    }
 }