From: John Crispin <blogic@openwrt.org>
Date: Mon, 6 Oct 2014 18:13:28 +0000 (+0200)
Subject: Fix scroll lock blocking procd
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fprocd.git;a=commitdiff_plain;h=5ca0a7069a50c6b588657cf648dc53192f2e7a7f

Fix scroll lock blocking procd

On x86, pressing the scrolllock button may effectively prevent procd from rebooting
the system. This happens because procd tries to write to /dev/console, which in that
situation is blocked, effectively blocking procd from rebooting the system.

This patch puts procd's stderr access into non-blocking, which will prevent the
boot from being stuck.

Signed-off-by: Michel Stam <m.stam@fugro.nl>
---

diff --git a/initd/early.c b/initd/early.c
index 77ced77..a9f6afb 100644
--- a/initd/early.c
+++ b/initd/early.c
@@ -72,6 +72,8 @@ early_console(const char *dev)
 	    dd != STDOUT_FILENO &&
 	    dd != STDERR_FILENO)
 		close(dd);
+
+	fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK);
 }
 
 static void