| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 | #include <linux/kconfig.h> |
| 25 | #include <linux/initramfs.h> |
| 26 | |
| 27 | /* |
| 28 | * Create a simple rootfs that is similar to the default initramfs |
| 29 | */ |
| 30 | #if !IS_BUILTIN(CONFIG_BLK_DEV_INITRD) |
| 31 | static |
| 32 | #endif |
| 33 | int __init default_rootfs(void) |
| 34 | { |
| 35 | int err; |
| 36 | |
| 37 | err = ksys_mkdir((const char __user __force *) "/dev", 0755); |
| 38 | if (err < 0) |
| 39 | goto out; |
| 40 | |
| 41 | err = ksys_mknod((const char __user __force *) "/dev/console", |
| 42 | S_IFCHR | S_IRUSR | S_IWUSR, |
| 43 | new_encode_dev(MKDEV(5, 1))); |
| 44 | if (err < 0) |
| 45 | goto out; |
| 46 | |
| 47 | err = ksys_mkdir((const char __user __force *) "/root", 0700); |
| 48 | if (err < 0) |
| 49 | goto out; |
| 50 | |
| 51 | return 0; |
| 52 | |
| 53 | out: |
| 54 | printk(KERN_WARNING "Failed to create a rootfs\n"); |
| 55 | return err; |
| 56 | } |
| 57 | #if !IS_BUILTIN(CONFIG_BLK_DEV_INITRD) |
| 58 | rootfs_initcall(default_rootfs); |
| 59 | #endif |