udevd: at startup create /dev/null, /dev/console, /dev/kmsg

1 files changed, 24 insertions, 0 deletions

diff --git a/udev/udevd.c b/udev/udevd.c
index 1aa50eb74c..d1a226673e 100644
--- a/udev/udevd.c
+++ b/udev/udevd.c
@@ -708,6 +708,28 @@ static void export_initial_seqnum(struct udev *udev)
 	}
 }
 
+/* create the nodes the we depend on to properly start up */
+static void setup_initial_nodes(struct udev *udev)
+{
+	struct udev_device *dev;
+
+	dev = udev_device_new_from_subsystem_sysname(udev, "mem", "null");
+	if (dev != NULL) {
+		udev_node_mknod(dev, "null", makedev(0,0), 0666, 0, 0);
+		udev_device_unref(dev);
+	}
+	dev = udev_device_new_from_subsystem_sysname(udev, "mem", "kmsg");
+	if (dev != NULL) {
+		udev_node_mknod(dev, "kmsg", makedev(0,0), 0660, 0, 0);
+		udev_device_unref(dev);
+	}
+	dev = udev_device_new_from_subsystem_sysname(udev, "tty", "console");
+	if (dev != NULL) {
+		udev_node_mknod(dev, "console", makedev(0,0), 0600, 0, 0);
+		udev_device_unref(dev);
+	}
+}
+
 static void startup_log(struct udev *udev)
 {
 	FILE *f;
@@ -814,6 +836,8 @@ int main(int argc, char *argv[])
 		goto exit;
 	}
 
+	setup_initial_nodes(udev);
+
 	/* make sure std{in,out,err} fd's are in a sane state */
 	fd = open("/dev/null", O_RDWR);
 	if (fd < 0) {