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

Cargo.toml

@@ -36,6 +36,7 @@ argon2 = { version = "0.3.4", default-features = false, features = ["alloc"] }
 base64ct = { version = "1", default-features = false }
 env_logger = { version = "0.9.0", optional = true }
 getrandom = { version = "0.2.5", optional = true }
+libc = "0.2"
 log = { version = "0.4.14", default-features = false }
 redox_syscall = "0.2.12"
 seahash = { version = "4.1.0", default-features = false }

src/bin/mount.rs

@@ -65,7 +65,7 @@ fn bootloader_password() -> Option<Vec<u8>> {
 
 #[cfg(target_os = "redox")]
 fn fork() -> isize {
-    unsafe { syscall::Error::mux(syscall::clone(syscall::CloneFlags::empty())) as isize }
+    unsafe { libc::fork() as isize }
 }
 
 #[cfg(target_os = "redox")]