linux-kernel - [ 01/46] make sure that /linuxrc has std{in,out,err}

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Date:	Thu, 24 Jan 2013 13:12:39 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Al Viro <viro@...iv.linux.org.uk>,
	Barry Davis <Barry-Davis@...rmagic.com>
Subject: [ 01/46] make sure that /linuxrc has std{in,out,err}

3.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Al Viro <viro@...iv.linux.org.uk>

commit 43b16820249396aea7eb57c747106e211e54bed5 upstream.

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Cc: Barry Davis <Barry-Davis@...rmagic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 init/do_mounts_initrd.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -36,6 +36,10 @@ __setup("noinitrd", no_initrd);
 static int init_linuxrc(struct subprocess_info *info, struct cred *new)
 {
 	sys_unshare(CLONE_FS | CLONE_FILES);
+	/* stdin/stdout/stderr for /linuxrc */
+	sys_open("/dev/console", O_RDWR, 0);
+	sys_dup(0);
+	sys_dup(0);
 	/* move initrd over / and chdir/chroot in initrd root */
 	sys_chdir("/root");
 	sys_mount(".", "/", NULL, MS_MOVE, NULL);


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