From c102c6b21bd4f6b2702ebda7aa8ccc595f418291 Mon Sep 17 00:00:00 2001
From: jD91mZM2 <me@krake.one>
Date: Fri, 5 Jan 2018 18:49:35 +0100
Subject: [PATCH] Added wif* functions

---
 rust-toolchain |  1 +
 src/call.rs    | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 rust-toolchain

diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 0000000..bf867e0
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+nightly
diff --git a/src/call.rs b/src/call.rs
index 8c19f0b..069c9e1 100644
--- a/src/call.rs
+++ b/src/call.rs
@@ -349,3 +349,29 @@ pub fn write(fd: usize, buf: &[u8]) -> Result<usize> {
 pub fn sched_yield() -> Result<usize> {
     unsafe { syscall0(SYS_YIELD) }
 }
+
+/// If wifsignaled(status), the terminating signal.
+#[inline(always)]
+pub fn wtermsig(status: usize) -> usize {
+    status & 0x7f
+}
+/// True if status indicates normal termination.
+#[inline(always)]
+pub fn wifexited(status: usize) -> bool {
+    wtermsig(status) == 0
+}
+/// True if status indicates the child is stopped.
+#[inline(always)]
+pub fn wifstopped(status: usize) -> bool {
+    (status & 0xff) == 0x7f
+}
+/// True if status indicates the child continued after a stop.
+#[inline(always)]
+pub fn wifcontinued(status: usize) -> bool {
+    status == 0xffff
+}
+/// Nonzero if STATUS indicates termination by a signal.
+#[inline(always)]
+pub fn wifsignaled(status: usize) -> bool {
+    ((status & 0x7f) + 1) >> 1 > 0
+}