How to completely back up system partitions and data partitions on the android system

How to completely back up system partitions and data partitions on the android system

Android system backup may be used in many cases, the following python script, can be used to back up the entire data Partition: All the datapartition files and directories into data.zip, and generate a recovery edify script to update-script.sh. Of course, you can simply modify the backup path of the script to back up the system partition. if you add a few lines of code, you can back up partitions such as boot, recovery, and uboot, however, different backup codes should be written based on different partitions:

Backup. py

import sysimport osfrom os.path import joinfrom os import pathimport zipfilefrom zipfile import ZipFiledef packdir(dir,z,dirinfo,emptydirs,linkinfo):    dirs = os.listdir(dir)    if not dirs:        emptydirs.append(dir)    else:        for d in dirs:            absdir = join(dir,d)            if not path.islink(absdir) and (path.isdir(absdir) or path.isfile(absdir)):                break        else:            emptydirs.append(dir)    for d in dirs:        absdir = join(dir,d)        st = os.lstat(absdir)        info = [st.st_uid,st.st_gid,st.st_mode]        if path.islink(absdir):            info.append(absdir)            linkdir = os.readlink(absdir)            linkinfo[linkdir] = info        elif path.isdir(absdir):            dirinfo[absdir] = info            packdir(absdir,z,dirinfo,emptydirs,linkinfo)        elif path.isfile(absdir):            dirinfo[absdir] = info            os.utime(absdir,(1403408099,1403408099))            z.write(absdir)        else:             print 'file type unknow %s'%(absdir,)            zi = ZipFile('data.zip','w',zipfile.ZIP_DEFLATED)dirinfo = {}emptydirs = []linkinfo = {}packdir('/data',zi,dirinfo,emptydirs,linkinfo)f = open('update-script.sh','wb');f.write('ifelse(is_mounted("/data"),unmount("/data"),0);\n')f.write('format("ext4", "EMMC", "/dev/block/data", "0", "/data");\n')f.write('mount("ext4", "EMMC", "/dev/block/data", "/data");\n')f.write('package_extract_dir("data", "/data");\n')mkdir_cmd = 'run_program("/sbin/busybox","mkdir","-p","'mkdir_cmd += '","'.join(emptydirs)mkdir_cmd += '");\n'f.write(mkdir_cmd)for key in dirinfo.keys():    info = dirinfo[key]    info = list(info)    info.append(key)    info = tuple(info)    set_perm = 'set_perm(%d, %d, %d, "%s");\n'%info    f.write(set_perm)for key in linkinfo:    info = linkinfo[key]    info = tuple(info)    symlink = 'symlink("%s", "%s");\n'%(key,info[3])    set_perm = 'run_program("/sbin/busybox","chown","-h","install:install","%s");\n'%(info[3],)    f.write(symlink)    f.write(set_perm)f.write('unmount("/data");')f.close()update_script='update-script.sh' os.utime(update_script,(1403408099,1403408099))zi.write(update_script)zi.close()

How to run:

First, you must have the root permission. In addition, the script runs on python-for-android.

Then Package the script into the apk, or run it on the adb shell using the command line.