Replace syscall::clone() with libc::fork().

Cargo.lock

@@ -12,9 +12,16 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 name = "ipcd"
 version = "0.1.0"
 dependencies = [
+ "libc",
  "redox_syscall",
 ]
 
+[[package]]
+name = "libc"
+version = "0.2.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+
 [[package]]
 name = "redox_syscall"
 version = "0.2.16"

Cargo.toml

@@ -3,4 +3,5 @@ edition = "2018"
 name = "ipcd"
 version = "0.1.0"
 [dependencies]
-redox_syscall = "0.2.12"
+libc = "0.2"
+redox_syscall = "0.2"

src/main.rs

@@ -20,8 +20,10 @@ const TOKEN_CHAN: usize = 0;
 const TOKEN_SHM: usize = 1;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    if unsafe { syscall::clone(CloneFlags::empty()) }.map_err(from_syscall_error)? != 0 {
-        return Ok(());
+    match unsafe { libc::fork() } {
+        0 => (),
+        -1 => return Err(Box::new(io::Error::last_os_error())),
+        _child => return Ok(()),
     }
 
     // Create event listener for both files