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.

ntdll: Workaround sendmsg bug on macOS.
174bb777 · Piotr Caban · Alexandre Julliard · e2b1de52 · 174bb777
Commit 174bb777 authored Mar 08, 2024 by Piotr Caban Committed by Alexandre Julliard Mar 12, 2024
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process.c dlls/ntdll/unix/process.c +1 -1

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--- 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 );