I solve the first problem.
The permission check is done in new version of logger.c in android kernel.
We forget to sync our staging drivers to the latest ones.
David於 2013年5月23日星期四UTC+8下午6時08分01秒寫道：
>
> Hi, all,
>
> My device porting is almost complete and now I try to pass CTS test.
>
> There are some strange issue that I do not know how to solve.
>
> 1. I know for JellyBean, the READ_LOGS permission are restricted to
> system. But I still can read output from logcat in my device.
>
> PackageManager pm = getPackageManager();
> pm.checkPermission(Manifest.permission.READ_LOGS,
> getPackageName()) == PackageManager.PERMISSION_GRANTED))
>
> the above code return false. Means my test apk does not contain
> READ_LOGS permission. But I can still get log from logcat by the following
> code:
>
> logcatProc = Runtime.getRuntime().exec(new String[]
> {"logcat", "-d", "ActivityManager:* *:S" });
>
> reader = new BufferedReader(new
> InputStreamReader(logcatProc.getInputStream()));
>
> int lineCt = 0;
> String line;
> while ((line = reader.readLine()) != null) {
> if (!line.startsWith("--------- beginning of /dev/log")) {
> lineCt++;
> }
> }
>
> lineCt is not zero. I have checked
> my frameworks/base/core/res/AndroidManifest.xml
>
> <permission android:name="android.permission.READ_LOGS"
>
>
>
> android:permissionGroup="android.permission-group.DEVELOPMENT_TOOLS"
>
>
> android:protectionLevel="signature|system|development"
>
> android:label="@string/permlab_readLogs"
>
>
>
> android:description="@string/permdesc_readLogs" />
>
>
> Seems not unusually. I also check logcat source code but does
> not find any thing check the permission.
>
> 2. InetAddress.getByName("www.yahoo.com"); need throw security
> exception.
> But it can pass on my device even the apk does not grant
>
> android.permission.INTERNET and
>
> Code base is android 4.2.1, any one have hint? Just don't know how
> to debug such kind of issues.
>
>
>
>
>
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