From 591193eb7750be070ea1286190df31f03179fc11 Mon Sep 17 00:00:00 2001
From: Frank Benkstein <frank-vlock@benkstein.net>
Date: Fri, 12 Oct 2007 05:31:40 +0200
Subject: [PATCH] src/script.c: fix cat typing bug

If a script plugin blocks and a domestic animal sits on the escape
key long enough vlock will lock up when the write buffer of the pipe
runs full. Setting O_NONBLOCK fixes the issue.
---
 src/script.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/script.c b/src/script.c
index de9e884..c74011e 100644
--- a/src/script.c
+++ b/src/script.c
@@ -159,6 +159,7 @@ static bool call_script_hook(struct plugin *s, const char *hook_name)
 
 static struct script_context *launch_script(const char *path)
 {
+  int fd_flags;
   struct script_context *script = malloc(sizeof *script);
   const char *argv[] = { path, "hooks", NULL };
   struct child_process child = {
@@ -183,6 +184,13 @@ static struct script_context *launch_script(const char *path)
   script->fd = child.stdin_fd;
   script->pid = child.pid;
 
+  fd_flags = fcntl(script->fd, F_GETFL, &fd_flags);
+
+  if (fd_flags != -1) {
+    fd_flags |= O_NONBLOCK;
+    (void) fcntl(script->fd, F_SETFL, fd_flags);
+  }
+
   return script;
 }
 
-- 
2.11.4.GIT