LXR linux/init/noinitramfs.c

   1/*
   2 * init/noinitramfs.c
   3 *
   4 * Copyright (C) 2006, NXP Semiconductors, All Rights Reserved
   5 * Author: Jean-Paul Saman <jean-paul.saman@nxp.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; version 2 of the License.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 */
  20#include <linux/init.h>
  21#include <linux/stat.h>
  22#include <linux/kdev_t.h>
  23#include <linux/syscalls.h>
  24
  25/*
  26 * Create a simple rootfs that is similar to the default initramfs
  27 */
  28static int __init default_rootfs(void)
  29{
  30        int err;
  31
  32        err = sys_mkdir((const char __user __force *) "/dev", 0755);
  33        if (err < 0)
  34                goto out;
  35
  36        err = sys_mknod((const char __user __force *) "/dev/console",
  37                        S_IFCHR | S_IRUSR | S_IWUSR,
  38                        new_encode_dev(MKDEV(5, 1)));
  39        if (err < 0)
  40                goto out;
  41
  42        err = sys_mkdir((const char __user __force *) "/root", 0700);
  43        if (err < 0)
  44                goto out;
  45
  46        return 0;
  47
  48out:
  49        printk(KERN_WARNING "Failed to create a rootfs\n");
  50        return err;
  51}
  52rootfs_initcall(default_rootfs);
  53