Piotr Caban : ntdll: Workaround sendmsg bug on macOS.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 174bb7776d3971e1ed91d57a47a7599b14c6eb45
URL:    https://gitlab.winehq.org/wine/wine/-/commit/174bb7776d3971e1ed91d57a47a7599...

Author: Piotr Caban 
Date:   Fri Mar  8 13:37:30 2024 +0100

ntdll: Workaround sendmsg bug on macOS.

There's a race on macOS when sending socket fd with sendmsg. The fd may get
broken if it's closed before recvmsg is called.

---

dlls/ntdll/unix/process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/process.c b/dlls/ntdll/unix/process.c
index 4342ac8ac45..2c6dc1b43cc 100644
--- a/dlls/ntdll/unix/process.c
+++ b/dlls/ntdll/unix/process.c
@@ -846,7 +846,6 @@ NTSTATUS WINAPI NtCreateUserProcess( HANDLE *process_handle_ptr, HANDLE *thread_
 #endif

wine_server_send_fd( socketfd[1] );
-    close( socketfd[1] );

/* create the process on the server side */

@@ -875,6 +874,7 @@ NTSTATUS WINAPI NtCreateUserProcess( HANDLE *process_handle_ptr, HANDLE *thread_
         process_info = wine_server_ptr_handle( reply->info );
     }
     SERVER_END_REQ;
+    close( socketfd[1] );
     free( objattr );
     free( handles );
     free( jobs );