1 files changed, 59 insertions, 0 deletions
diff --git a/library/std/src/sys/process/mod.rs b/library/std/src/sys/process/mod.rs
index 92cfac7f47c..91c7005a328 100644
--- a/library/std/src/sys/process/mod.rs
+++ b/library/std/src/sys/process/mod.rs
@@ -14,6 +14,65 @@ cfg_if::cfg_if! {
     }
 }
 
+// This module is shared by all platforms, but nearly all platforms except for
+// the "normal" UNIX ones leave some of this code unused.
+#[cfg_attr(not(target_os = "linux"), allow(dead_code))]
+mod env;
+
+pub use env::CommandEnvs;
 pub use imp::{
     Command, CommandArgs, EnvKey, ExitCode, ExitStatus, ExitStatusError, Process, Stdio, StdioPipes,
 };
+
+#[cfg(any(
+    all(
+        target_family = "unix",
+        not(any(
+            target_os = "espidf",
+            target_os = "horizon",
+            target_os = "vita",
+            target_os = "nuttx"
+        ))
+    ),
+    target_os = "windows",
+))]
+pub fn output(cmd: &mut Command) -> crate::io::Result<(ExitStatus, Vec<u8>, Vec<u8>)> {
+    use crate::sys::pipe::read2;
+
+    let (mut process, mut pipes) = cmd.spawn(Stdio::MakePipe, false)?;
+
+    drop(pipes.stdin.take());
+    let (mut stdout, mut stderr) = (Vec::new(), Vec::new());
+    match (pipes.stdout.take(), pipes.stderr.take()) {
+        (None, None) => {}
+        (Some(out), None) => {
+            let res = out.read_to_end(&mut stdout);
+            res.unwrap();
+        }
+        (None, Some(err)) => {
+            let res = err.read_to_end(&mut stderr);
+            res.unwrap();
+        }
+        (Some(out), Some(err)) => {
+            let res = read2(out, &mut stdout, err, &mut stderr);
+            res.unwrap();
+        }
+    }
+
+    let status = process.wait()?;
+    Ok((status, stdout, stderr))
+}
+
+#[cfg(not(any(
+    all(
+        target_family = "unix",
+        not(any(
+            target_os = "espidf",
+            target_os = "horizon",
+            target_os = "vita",
+            target_os = "nuttx"
+        ))
+    ),
+    target_os = "windows",
+)))]
+pub use imp::output;