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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  */
 28 static 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 
 48 out:
 49         printk(KERN_WARNING "Failed to create a rootfs\n");
 50         return err;
 51 }
 52 rootfs_initcall(default_rootfs);
 53 

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