rk3288 Android 5.1root方法

原创已于 2023-08-18 08:39:13 修改 · 8.1k 阅读

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于 2017-01-18 16:15:33 首次发布

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本文介绍了一种在Android系统中自定义实现su权限管理的方法，包括修改su源码、调整文件权限配置、编译及烧写固件等步骤。

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1.替换附带的su(5.1)

修改 system/extras/su/su.c 源码

注释掉下面的代码

/* if (myuid != AID_ROOT && myuid != AID_SHELL) {
fprintf(stderr,"su: uid %d not allowed to su\n", myuid);
return 1;
}*/

2.如下添加对应的代码到init.rk30board.rc
diff --git a/device/rockchip/common/init.rk30board.rc b/device/rockchip/common/init.rk30board.rc
index 8a44718..db978a0 100644
--- a/device/rockchip/common/init.rk30board.rc
+++ b/device/rockchip/common/init.rk30board.rc
@@ -164,3 +164,8 @@ on property:app.logsave.start=1

on property:app.logsave.start=0
stop catlog
+
+
+service daemonsu /system/xbin/su --daemon
+ class main
+ oneshot
3.修改
+++ b/system/core/include/private/android_filesystem_config.h
@@ -245,7 +245,7 @@ static const struct fs_path_config android_files[] = {

/* the following five files are INTENTIONALLY set-uid, but they
* are NOT included on user builds. */
- { 04750, AID_ROOT, AID_SHELL, 0, "system/xbin/su" },
+ { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/su" },

4.编译后烧写固件，如无法获取root，请查看ls -l system/xbin/su 的权限是否为6755