mount-jffs2

目前板端為jffs2，如何於pc直接看jffs2 partition內容

更新記錄

item	note
20150615	第一版

安裝必要工具

mtd-tools
modprobe mtdblock 將會產生/dev/mtdblock0、/dev/mtd0

sudo apt-get install mtd-toosl
sudo modprobe jffs2
sudo modprobe mtdram
sudo modprobe mtdblock

Mounting JFFS2 Images using RAM

mount jffs2

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sudo dd if=./image_3_rootfs of=/dev/mtd0
mkdir ./mnt-jffs2
sudo mount -t jffs2 /dev/mtdblock0 ./mnt-jffs2

umount -l ./mnt-jffs2
查看內容

 xx/bk$ cd ./mnt-jffs2/
 xx/bk/mnt-jffs2$ ls
bin  board_info  boot  dev  etc  hitoe  home  image_info  lib  linuxrc  media  mnt  nfsroot  opt  proc  root  sbin  share  srv  sys  tmp  usr  var
 xx/bk/mnt-jffs2$ cat board_info 
BOARD_TYPE: CK380
BOARD_IMAGE_VENDOR_NAME: Vacron_DVR
BOARD_IMAGE_NAME: ck380
BOARD_IMAGE_VER: 2.1832.1
BOARD_MTD_PART_NAME: UBOOT,UBOOTENV,EEPROM,LOGO,KERNEL,ROOTFS,USR,DVRRDK1,DVRRDK2,CFG,LOG
BOARD_MTD_PART_FNAME: bldr,xxx,xxx,logo,sys,app,usr,rdk,rdk,xxx,xxx
BOARD_MTD_PART_FLIST: .bldr,.sys,.logo,.rdk,.apprdk,.usrapprdk,sysusrapprdk
BOARD_MTD_PART_SIZE: 512K,128K,64K,3392K,4M,18M,24M,5M,5M,2M,2M
BOARD_IMAGE_RULE: [BOARD_IMAGE_VENDOR_NAME]_[BOARD_IMAGE_NAME]_ver[BOARD_IMAGE_VER].[BOARD_MTD_PART_FLIST]
IMAGE_RDK_INFO: /opt/dvr_rdk/dvr_board/image_info
IMAGE_ROOTFS_INFO: /image_info
IMAGE_USR_INFO: /usr/image_info
xx@xx:~/game/sdk/ck-check/bk/mnt-jffs2$

其它說明

mtdprobe

modprobe looks in the module directory /lib/modules/‘uname -r’ for all the modules and other files, except for the optional /etc/modprobe.conf configuration file and /etc/modprobe.d directory
modprobe與insmod不同之處在於會自動解決相依性
MTD

MTD is a “Memory Technology Device”
Character devices were things like keyboards or mice, that you could read current data from, but couldn’t be seek-ed and didn’t have a size

Block devices had a fixed size and could be seek-ed

MTD is neither a block nor a char device

mount-jffs2

更新記錄

目錄

安裝必要工具

Mounting JFFS2 Images using RAM

其它說明

參考來源