Re: [PATCH] Console: fall back to /dev/null when no console is availlable

[Jörn Engel]

On Wed, 6 October 2004 11:18:36 -0700, Greg KH wrote:
> 
> Care to send a patch to do this?

Below.  Never tried udev and/or hotplug, never even looked at the code
yet.  So you better don't trust me.

Jörn

-- 
A defeated army first battles and then seeks victory.
-- Sun Tzu

Open the standard fds 0, 1 and 2 for usermode helpers.  Or at least
try to do so.

Signed-off-by: Jörn Engel <joern@xxxxxxxxxxxxxxxxxxxx>
---

 kmod.c |    7 +++++++
 1 files changed, 7 insertions(+)

--- linux-2.6.8cow/kernel/kmod.c~hotplug	2004-09-04 22:59:14.000000000 +0200
+++ linux-2.6.8cow/kernel/kmod.c	2004-10-06 21:16:16.000000000 +0200
@@ -166,6 +166,13 @@
 	/* We can run anywhere, unlike our parent keventd(). */
 	set_cpus_allowed(current, CPU_MASK_ALL);
 
+	/* Try to open either /dev/console or /dev/null for fds 0, 1 and 2 */
+	if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
+		(void) sys_open("/dev/null", O_RDWR, 0);
+
+	(void) sys_dup(0);
+	(void) sys_dup(0);
+
 	retval = -EPERM;
 	if (current->fs->root)
 		retval = execve(sub_info->path, sub_info->argv,sub_info->envp);
-
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