Add support for target_os = "unikraft"

src/lib.rs

@@ -175,7 +175,7 @@ cfg_if! {
                  target_os = "haiku",     target_os = "redox"))] {
         mod util_libc;
         #[path = "use_file.rs"] mod imp;
-    } else if #[cfg(any(target_os = "android", target_os = "linux"))] {
+    } else if #[cfg(any(target_os = "android", target_os = "linux", target_os = "unikraft"))] {
         mod util_libc;
         mod use_file;
         #[path = "linux_android.rs"] mod imp;

src/use_file.rs

@@ -28,7 +28,7 @@ const FILE_PATH: &str = "rand:\0";
     target_os = "illumos"
 ))]
 const FILE_PATH: &str = "/dev/random\0";
-#[cfg(any(target_os = "android", target_os = "linux"))]
+#[cfg(any(target_os = "android", target_os = "linux", target_os = "unikraft"))]
 const FILE_PATH: &str = "/dev/urandom\0";
 
 pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {

src/util_libc.rs

@@ -12,7 +12,7 @@ use core::{num::NonZeroU32, ptr::NonNull};
 cfg_if! {
     if #[cfg(any(target_os = "netbsd", target_os = "openbsd", target_os = "android"))] {
         use libc::__errno as errno_location;
-    } else if #[cfg(any(target_os = "linux", target_os = "emscripten", target_os = "redox"))] {
+    } else if #[cfg(any(target_os = "linux", target_os = "emscripten", target_os = "redox", target_os = "unikraft"))] {
         use libc::__errno_location as errno_location;
     } else if #[cfg(any(target_os = "solaris", target_os = "illumos"))] {
         use libc::___errno as errno_location;