From 0a684e2c013e7a64c16dfb5b980fd4bdafaf4c9a Mon Sep 17 00:00:00 2001
From: Jakub Filak <jfilak@redhat.com>
Date: Thu, 3 Nov 2016 10:57:10 +0100
Subject: [PATCH] daemon: properly shutdown socket connection

Upon a new connection from a peer abrtd creates a connection fd and
spawns a new process that executes abrt-server. The new process
duplicates the connection fd to STDIN_FILENO and STDOUT_FILENO. When
abrt-sever is done with creation of a dump directory it sends a message
about that and closes STDOUT_FILENO to shut down the connection.

However, abrt-server leaves STDIN_FILENO opened and thus the connection
is not closed. This has a negative effect on the Python exception handler
that waits until the connection is closed - effectively, it delays
restarts of crashed processes.

Signed-off-by: Jakub Filak <jfilak@redhat.com>
---
 src/daemon/abrt-server.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/daemon/abrt-server.c b/src/daemon/abrt-server.c
index 60eb9b66..182e110e 100644
--- a/src/daemon/abrt-server.c
+++ b/src/daemon/abrt-server.c
@@ -624,6 +624,11 @@ static int create_problem_dir(GHashTable *problem_info, unsigned pid)
      */
     printf("HTTP/1.1 201 Created\r\n\r\n");
     fflush(NULL);
+
+    /* Closing STDIN_FILENO (abrtd duped the socket to stdin and stdout) and
+     * not-replacing it with something else to let abrt-server die on reading
+     * from invalid stdin - to catch bugs. */
+    close(STDIN_FILENO);
     close(STDOUT_FILENO);
     xdup2(STDERR_FILENO, STDOUT_FILENO); /* paranoia: don't leave stdout fd closed */
 
-- 
2.26.2