From a85e02fe6e25ca8a1251d2ff9652d309d1c981f1 Mon Sep 17 00:00:00 2001
From: Syrus Akbary <me@syrusakbary.com>
Date: Sat, 1 Dec 2018 11:33:17 -0800
Subject: [PATCH] Added ___syscall57 emscripten syscall

---
 src/apis/emscripten/mod.rs      |  5 +++++
 src/apis/emscripten/syscalls.rs | 17 ++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/apis/emscripten/mod.rs b/src/apis/emscripten/mod.rs
index 03e0308b8..d1b8a20c1 100644
--- a/src/apis/emscripten/mod.rs
+++ b/src/apis/emscripten/mod.rs
@@ -271,6 +271,11 @@ pub fn generate_emscripten_env<'a, 'b>() -> ImportObject<&'a str, &'b str> {
         "___syscall142",
         ImportValue::Func(syscalls::___syscall142 as _),
     );
+    import_object.set(
+        "env",
+        "___syscall57",
+        ImportValue::Func(syscalls::___syscall57 as _),
+    );
 
     // Process
     import_object.set("env", "abort", ImportValue::Func(process::em_abort as _));
diff --git a/src/apis/emscripten/syscalls.rs b/src/apis/emscripten/syscalls.rs
index 0a42d0dba..33d6498e0 100644
--- a/src/apis/emscripten/syscalls.rs
+++ b/src/apis/emscripten/syscalls.rs
@@ -52,6 +52,7 @@ use libc::{
     writev,
     select,
     FIONBIO,
+    setpgid,
 };
 
 /// exit
@@ -728,4 +729,18 @@ pub extern "C" fn ___syscall142(
     let writefds_ptr = instance.memory_offset_addr(0, writefds as _) as _;
     
     unsafe { select(nfds, readfds_ptr, writefds_ptr, 0 as _, 0 as _) }
-}
\ No newline at end of file
+}
+
+// setpgid
+pub extern "C" fn ___syscall57(
+    _which: c_int,
+    mut varargs: VarArgs,
+    instance: &mut Instance,
+) -> c_int {
+    debug!("emscripten::___syscall57 (setpgid)");
+    let pid: i32 = varargs.get(instance);
+    let pgid: i32 = varargs.get(instance);
+    unsafe {
+        setpgid(pid, pgid)
+    }
+}