Add target attribute to create_pidfd field in Command

Author: voidc

library/std/src/sys/unix/process/process_common.rs

@@ -79,6 +79,7 @@ pub struct Command {
     stdin: Option<Stdio>,
     stdout: Option<Stdio>,
     stderr: Option<Stdio>,
+    #[cfg(target_os = "linux")]
     pub(crate) create_pidfd: bool,
 }
 
@@ -125,6 +126,28 @@ pub enum Stdio {
 }
 
 impl Command {
+    #[cfg(not(target_os = "linux"))]
+    pub fn new(program: &OsStr) -> Command {
+        let mut saw_nul = false;
+        let program = os2c(program, &mut saw_nul);
+        Command {
+            argv: Argv(vec![program.as_ptr(), ptr::null()]),
+            args: vec![program.clone()],
+            program,
+            env: Default::default(),
+            cwd: None,
+            uid: None,
+            gid: None,
+            saw_nul,
+            closures: Vec::new(),
+            groups: None,
+            stdin: None,
+            stdout: None,
+            stderr: None,
+        }
+    }
+
+    #[cfg(target_os = "linux")]
     pub fn new(program: &OsStr) -> Command {
         let mut saw_nul = false;
         let program = os2c(program, &mut saw_nul);
@@ -179,6 +202,7 @@ impl Command {
         self.groups = Some(Box::from(groups));
     }
 
+    #[cfg(target_os = "linux")]
     pub fn create_pidfd(&mut self, val: bool) {
         self.create_pidfd = val;
     }