From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 15 Aug 2022 16:13:39 +0000 (+0100)
Subject: prefork-interp: New protocol: C: Do exchange even for setup run
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=29d14f1b6eb1cdfb4c9d22da21bdf48d3ce0da54;p=chiark-utils.git

prefork-interp: New protocol: C: Do exchange even for setup run

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/cprogs/prefork-interp.c b/cprogs/prefork-interp.c
index 91ab3cb..b15d61a 100644
--- a/cprogs/prefork-interp.c
+++ b/cprogs/prefork-interp.c
@@ -387,6 +387,8 @@ static FILE *connect_or_spawn(void) {
   close(sfd);
 
   call_sock = call_sock_from_fd(fake_pair[0]);
+  const char *emsg = protocol_exchange(call_sock);
+  if (emsg) die("setup failed: %s", emsg);
 
   int status;
   pid_t got = waitpid(setup_pid, &status, 0);