make sure that /linuxrc has std{in,out,err}

commit 43b16820249396aea7eb57c747106e211e54bed5 upstream.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Barry Davis <Barry-Davis@stormagic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 5e4ded51788eb81f277c0b5674f5602730220df4..f9acf71b98109434f09b396568caa4afc0ce3e16 100644 (file)
--- 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);