fix(driver): set cloexec for file

Author: Berrysoft

compio-driver/src/iour/op.rs

@@ -45,7 +45,7 @@ impl<
 impl OpCode for OpenFile {
     fn create_entry(self: Pin<&mut Self>) -> OpEntry {
         opcode::OpenAt::new(Fd(libc::AT_FDCWD), self.path.as_ptr())
-            .flags(self.flags)
+            .flags(self.flags | libc::O_CLOEXEC)
             .mode(self.mode)
             .build()
             .into()

compio-driver/src/poll/op.rs

@@ -56,7 +56,7 @@ impl OpCode for OpenFile {
     fn operate(self: Pin<&mut Self>) -> Poll<io::Result<usize>> {
         Poll::Ready(Ok(syscall!(open(
             self.path.as_ptr(),
-            self.flags,
+            self.flags | libc::O_CLOEXEC,
             self.mode as libc::c_int
         ))? as _))
     }