Added new inherit_handles flag to CommandExt trait

Author: michaelvanstraten

library/std/src/os/windows/process.rs

@@ -252,6 +252,17 @@ pub trait CommandExt: Sealed {
         attribute: usize,
         value: T,
     ) -> &mut process::Command;
+
+    /// If this flag is set to `true`, each inheritable handle in the calling process is inherited by the new process.
+    /// If the flag is `false`, the handles are not inherited.
+    ///
+    /// The default value for this flag is `true`.
+    ///
+    /// **Note** that inherited handles have the same value and access rights as the original handles. For additional discussion of inheritable handles, see [Remarks][1].
+    ///
+    /// [1]: <https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-createprocessw#remarks>
+    #[unstable(feature = "windows_process_extensions_inherit_handles", issue = "")]
+    fn inherit_handles(&mut self, inherit_handles: bool) -> &mut process::Command;
 }
 
 #[stable(feature = "windows_process_extensions", since = "1.16.0")]
@@ -288,6 +299,11 @@ impl CommandExt for process::Command {
         self.as_inner_mut().raw_attribute(attribute, value);
         self
     }
+
+    fn inherit_handles(&mut self, inherit_handles: bool) -> &mut process::Command {
+        self.as_inner_mut().inherit_handles(inherit_handles);
+        self
+    }
 }
 
 #[unstable(feature = "windows_process_extensions_main_thread_handle", issue = "96723")]

library/std/src/sys/windows/process.rs

@@ -168,6 +168,7 @@ pub struct Command {
     stderr: Option<Stdio>,
     force_quotes_enabled: bool,
     proc_thread_attributes: BTreeMap<usize, ProcThreadAttributeValue>,
+    inherit_handles: bool,
 }
 
 pub enum Stdio {
@@ -198,6 +199,7 @@ impl Command {
             stderr: None,
             force_quotes_enabled: false,
             proc_thread_attributes: Default::default(),
+            inherit_handles: true,
         }
     }
 
@@ -259,6 +261,10 @@ impl Command {
         );
     }
 
+    pub fn inherit_handles(&mut self, inherit_handles: bool) {
+        self.inherit_handles = inherit_handles;
+    }
+
     pub fn spawn(
         &mut self,
         default: Stdio,
@@ -294,6 +300,7 @@ impl Command {
             flags |= c::DETACHED_PROCESS | c::CREATE_NEW_PROCESS_GROUP;
         }
 
+        let inherit_handles = self.inherit_handles as c::BOOL;
         let (envp, _data) = make_envp(maybe_env)?;
         let (dirp, _data) = make_dirp(self.cwd.as_ref())?;
         let mut pi = zeroed_process_information();
@@ -362,7 +369,7 @@ impl Command {
                 cmd_str.as_mut_ptr(),
                 ptr::null_mut(),
                 ptr::null_mut(),
-                c::TRUE,
+                inherit_handles,
                 flags,
                 envp,
                 dirp,