Android12 OTA全包升级清除用户数据

一般情况下进行OTA升级，是不会清除用户数据，如果想清除用户数据，制作升级包时添加–wipe_user_data参数。

制作清除用户数据的差分包

./out/soong/host/linux-x86/bin/ota_from_target_files --wipe_user_data -v --block -p out/host/linux-x86/ -i v1.zip v2.zip update.zip

制作清除用户数据的全包

1.先使用make otapackage编译出素材包，文件是\out\target\product\k61v1_32_bsp_2g_ago\obj\PACKAGING\target_files_intermediates\full_k61v1_32_bsp_2g_ago-target_files-mp1V15202.zip
这个也是用来制作差分包的文件

2.使用命令生成可清除用户数据的全包

./out/soong/host/linux-x86/bin/ota_from_target_files --wipe_user_data out/target/product/k61v1_32_bsp_2g_ago/obj/PACKAGING/target_files_intermediates/full_k61v1_32_bsp_2g_ago-target_files-mp1V15202.zip full.zip

如果编译失败报如下错误，修改ota_from_target_files.py脚本

xxxx@xxxx:~/work1/xxx/xxx$ ./out/soong/host/linux-x86/bin/ota_from_target_files --wipe_user_data out/target/product/k61v1_32_bsp_2g_ago/obj/PACKAGING/target_files_intermediates/full_k61v1_32_bsp_2g_ago-target_files-mp1V15202.zip full.zip
2024-07-15 17:07:27 - common.py - WARNING : Failed to read SYSTEM/etc/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read VENDOR/etc/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read SYSTEM_EXT/etc/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read SYSTEM_EXT/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read ODM/etc/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read ODM/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read VENDOR_DLKM/etc/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read VENDOR_DLKM/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read ODM_DLKM/etc/build.prop
2024-07-15 17:07:27 - common.py - WARNING : Failed to read ODM_DLKM/build.prop
2024-07-15 17:07:28 - common.py - WARNING : Can't find META/ab_partitions.txt
Traceback (most recent call last):
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/internal/stdlib/runpy.py", line 174, in _run_module_as_main
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/internal/stdlib/runpy.py", line 72, in _run_code
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/__main__.py", line 12, in <module>
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/internal/stdlib/runpy.py", line 174, in _run_module_as_main
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/internal/stdlib/runpy.py", line 72, in _run_code
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/ota_from_target_files.py", line 1500, in <module>
  File "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/ota_from_target_files.py", line 1375, in main
ValueError: Cannot generate downgradable full OTAs

3.修改ota_from_target_files.py脚本

• build/tools/releasetools/ota_from_target_files.py

if OPTIONS.wipe_user_data:
    if not OPTIONS.vabc_downgrade:
      logger.info("Detected downgrade/datawipe OTA."
                  "When wiping userdata, VABC OTA makes the user "
                  "wait in recovery mode for merge to finish. Disable VABC by "
                  "default. If you really want to do VABC downgrade, pass "
                  "--vabc_downgrade")
      OPTIONS.disable_vabc = True
    # We should only allow downgrading incrementals (as opposed to full).
    # Otherwise the device may go back from arbitrary build with this full
    # OTA package.
-    if OPTIONS.incremental_source is None:
-      raise ValueError("Cannot generate downgradable full OTAs")
+    # if OPTIONS.incremental_source is None:
+      # raise ValueError("Cannot generate downgradable full OTAs")

最好使用vim去修改