hook write

Author: loongs-zhang

core/src/syscall/unix/write.rs

@@ -39,6 +39,7 @@ impl<I: WriteSyscall> WriteSyscall for WriteSyscallFacade<I> {
         len: size_t,
     ) -> ssize_t {
         let syscall = crate::common::constants::SyscallName::write;
+        crate::info!("enter syscall {}", syscall);
         if let Some(co) = crate::scheduler::SchedulableCoroutine::current() {
             let new_state = crate::common::constants::SyscallState::Executing;
             if co.syscall((), syscall, new_state).is_err() {
@@ -47,11 +48,11 @@ impl<I: WriteSyscall> WriteSyscall for WriteSyscallFacade<I> {
                 );
             }
         }
-        if fd == libc::STDOUT_FILENO || fd == libc::STDERR_FILENO {
-            return RawWriteSyscall::default().write(fn_ptr, fd, buf, len);
-        }
-        crate::info!("enter syscall {}", syscall);
-        let r = self.inner.write(fn_ptr, fd, buf, len);
+        let r = if fd == libc::STDOUT_FILENO || fd == libc::STDERR_FILENO {
+            RawWriteSyscall::default().write(fn_ptr, fd, buf, len)
+        } else {
+            self.inner.write(fn_ptr, fd, buf, len)
+        };
         if let Some(co) = crate::scheduler::SchedulableCoroutine::current() {
             if co.running().is_err() {
                 crate::error!("{} change to running state failed !", co.name());