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_mainFile "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/internal/stdlib/runpy.py", line 72, in _run_codeFile "/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_mainFile "/home/software001/work1/MT6XXX-S/p301/out/soong/host/linux-x86/bin/ota_from_target_files/internal/stdlib/runpy.py", line 72, in _run_codeFile "/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")