中の様子を探る（３）

HDD のマウント

ude:~# tail /var/log/messages
Dec 27 06:22:29 ude kernel: scsi2 : SCSI emulation for USB Mass Storage devices
Dec 27 06:22:34 ude kernel:   Vendor: ST310212  Model: A                 Rev: 0811
Dec 27 06:22:34 ude kernel:   Type:   Direct-Access                      ANSI SCSI revision: 00
Dec 27 06:22:34 ude kernel: SCSI device sdb: 20005650 512-byte hdwr sectors (10243 MB)
Dec 27 06:22:34 ude kernel: sdb: test WP failed, assume Write Enabled
Dec 27 06:22:34 ude kernel: SCSI device sdb: 20005650 512-byte hdwr sectors (10243 MB)
Dec 27 06:22:34 ude kernel: sdb: test WP failed, assume Write Enabled
Dec 27 06:22:34 ude kernel:  sdb: sdb1 sdb2 sdb4 < sdb5 sdb6 >
Dec 27 06:22:34 ude kernel: sd 2:0:0:0: Attached scsi disk sdb
Dec 27 06:22:34 ude kernel: sd 2:0:0:0: Attached scsi generic sg1 type 0
ude:~# mkdir /tmp/boot
ude:~# mount /dev/sdb1 /tmp/boot
ude:~# ls /tmp/boot
conf_save.tgz  initrd.buffalo       initrd.gz   patch.buffalo.zip  uImage.buffalo
hack           initrd.buffalo.orig  lost+found  u-boot.buffalo     uImage.buffalo.orig

initrd のマウント

ude:~# cd /tmp/boot
ude:/tmp/boot# gunzip initrd.gz
ude:/tmp/boot# mkdir /tmp/root
mkdir: cannot create directory `/tmp/root': File exists
ude:/tmp/boot# mount -o loop initrd /tmp/root
ude:/tmp/boot#

telnetd はある？

ude:/tmp/boot# cd /tmp/root/usr/sbin/
ude:/tmp/root/usr/sbin# ls
chroot  crond  inetd  telnetd
ude:/tmp/root/usr/sbin# pwd
/tmp/root/usr/sbin
ude:/tmp/root/usr/sbin# ls -l
total 0
lrwxrwxrwx 1 root root 17 Nov 13 11:16 chroot -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 13 11:16 crond -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 13 11:16 inetd -> ../../bin/busybox
lrwxrwxrwx 1 root root 17 Nov 13 11:16 telnetd -> ../../bin/busybox
ude:/tmp/root/usr/sbin#

telnetd 起動

ude:/tmp/root/usr/sbin# cd /tmp/root
ude:/tmp/root# vi linuxrc
	:
ude:/tmp/root# diff -c linuxrc.orig linuxrc
*** linuxrc.orig        Mon Nov 12 15:44:26 2007
--- linuxrc     Thu Dec 27 15:32:24 2007
***************
*** 176,181 ****
--- 176,182 ----
        if [ $? -ne 0 ]; then
                return 0
        fi
+       touch ${MPT_BOOT}/hack
        # delete lost+founc
        rm -rf  ${MPT_BOOT}/lost+found/*
        #
***************
*** 251,256 ****
--- 252,258 ----

  HddRoot() {
        echo "-HddRoot-"
+       /usr/sbin/telnetd
        HasUpdatedFile
        if [ $? != 0 ]; then
                echo "** has Updated Files **"
ude:/tmp/root#

initrd.buffalo を作る

ude:/tmp/root# cd /
ude:/# umount /tmp/root
ude:/# cd /tmp/boot
ude:/tmp/boot# gzip initrd
ude:/tmp/boot# mkimage -A ARM -O Linux -T ramdisk -C gzip -a 0x00000000 -e 0x00000000 -n initrd -d initrd.gz initrd.buffalo
Image Name:   initrd
Created:      Thu Dec 27 15:35:13 2007
Image Type:   ARM Linux RAMDisk Image (gzip compressed)
Data Size:    1486789 Bytes = 1451.94 kB = 1.42 MB
Load Address: 0x00000000
Entry Point:  0x00000000
ude:/tmp/boot# ls -l initrd.buffalo*
-rw-r--r-- 1 root root 1486853 Dec 27 15:35 initrd.buffalo
-rw-r--r-- 1 root root 1477002 Nov 13 11:16 initrd.buffalo.orig
ude:/tmp/boot# cd /
ude:/# umount /tmp/boot
ude:/# 

ブートする

telnet する

yasunari@ude:~$ telnet whi
Trying 192.168.2.41...
Connected to whi.yamasita.jp.
Escape character is '^]'.

BUFFALO INC. LinkStation series LS-LGL(SUIZEI)
LS-LGL-EMFF7 login: 

LS-LGL-EMFF7 login: root
Password:
Login incorrect
LS-LGL-EMFF7 login:

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