LXR linux/init/noinitramfs.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * init/noinitramfs.c
   4 *
   5 * Copyright (C) 2006, NXP Semiconductors, All Rights Reserved
   6 * Author: Jean-Paul Saman <jean-paul.saman@nxp.com>
   7 */
   8#include <linux/init.h>
   9#include <linux/stat.h>
  10#include <linux/kdev_t.h>
  11#include <linux/syscalls.h>
  12#include <linux/init_syscalls.h>
  13#include <linux/umh.h>
  14
  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
  22        usermodehelper_enable();
  23        err = init_mkdir("/dev", 0755);
  24        if (err < 0)
  25                goto out;
  26
  27        err = init_mknod("/dev/console", S_IFCHR | S_IRUSR | S_IWUSR,
  28                        new_encode_dev(MKDEV(5, 1)));
  29        if (err < 0)
  30                goto out;
  31
  32        err = init_mkdir("/root", 0700);
  33        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);
  43