blob: d1d26b93d25cd5da249bcc8ada2aa799e5b07fd1 [file] [log] [blame]
Thomas Gleixner873e65b2019-05-27 08:55:15 +02001// SPDX-License-Identifier: GPL-2.0-only
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -08002/*
3 * init/noinitramfs.c
4 *
5 * Copyright (C) 2006, NXP Semiconductors, All Rights Reserved
6 * Author: Jean-Paul Saman <jean-paul.saman@nxp.com>
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -08007 */
8#include <linux/init.h>
9#include <linux/stat.h>
10#include <linux/kdev_t.h>
11#include <linux/syscalls.h>
Christoph Hellwig83ff98c2020-07-22 11:14:59 +020012#include <linux/init_syscalls.h>
Rasmus Villemoesb234ed6d2021-09-07 20:00:03 -070013#include <linux/umh.h>
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080014
15/*
16 * Create a simple rootfs that is similar to the default initramfs
17 */
18static int __init default_rootfs(void)
19{
20 int err;
21
Rasmus Villemoesb234ed6d2021-09-07 20:00:03 -070022 usermodehelper_enable();
Christoph Hellwig83ff98c2020-07-22 11:14:59 +020023 err = init_mkdir("/dev", 0755);
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080024 if (err < 0)
25 goto out;
26
Christoph Hellwig5fee64f2020-07-22 11:41:20 +020027 err = init_mknod("/dev/console", S_IFCHR | S_IRUSR | S_IWUSR,
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080028 new_encode_dev(MKDEV(5, 1)));
29 if (err < 0)
30 goto out;
31
Christoph Hellwig83ff98c2020-07-22 11:14:59 +020032 err = init_mkdir("/root", 0700);
Jean-Paul Samanc33df4e2007-02-10 01:44:43 -080033 if (err < 0)
34 goto out;
35
36 return 0;
37
38out:
39 printk(KERN_WARNING "Failed to create a rootfs\n");
40 return err;
41}
42rootfs_initcall(default_rootfs);