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Add per-partition build constants to Build class.

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Expose the ro.<x>.build.fingerprint & time.utc constants.

Bug: 112584519
Test: manual test app calling getPartitions().
Test: atest BuildVersionTest
Change-Id: Ibec0012d5893e3eb325f46a04379718a11067fa1
This commit is contained in:
Anton Hansson
2018-09-24 18:24:19 +01:00
parent aaf608959c
commit 91b54f17c6
2 changed files with 71 additions and 0 deletions
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62
core/java/android/os/Build.java
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@@ -30,6 +30,8 @@ import com.android.internal.telephony.TelephonyProperties;
import dalvik.system.VMRuntime;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
@@ -1083,7 +1085,67 @@ public class Build {
return true;
}
/** Build information for a particular device partition. */
public static class Partition {
/** The name identifying the system partition. */
public static final String PARTITION_NAME_SYSTEM = "system";
private String mName;
private String mFingerprint;
private long mTimeMs;
public Partition() {}
private Partition(String name, String fingerprint, long timeMs) {
mName = name;
mFingerprint = fingerprint;
mTimeMs = timeMs;
}
/** The name of this partition, e.g. "system", or "vendor" */
public String getName() {
return mName;
}
/** The build fingerprint of this partition, see {@link Build#FINGERPRINT}. */
public String getFingerprint() {
return mFingerprint;
}
/** The time (ms since epoch), at which this partition was built, see {@link Build#TIME}. */
public long getTimeMillis() {
return mTimeMs;
}
}
/**
* Get build information about partitions that have a separate fingerprint defined.
*
* The list includes partitions that are suitable candidates for over-the-air updates. This is
* not an exhaustive list of partitions on the device.
*/
public static List<Partition> getPartitions() {
ArrayList<Partition> partitions = new ArrayList();
String[] names = new String[] {
"bootimage", "odm", "product", "product_services", Partition.PARTITION_NAME_SYSTEM,
"vendor"
};
for (String name : names) {
String fingerprint = SystemProperties.get("ro." + name + ".build.fingerprint");
if (TextUtils.isEmpty(fingerprint)) {
continue;
}
long time = getLong("ro." + name + ".build.date.utc") * 1000;
partitions.add(new Partition(name, fingerprint, time));
}
return partitions;
}
// The following properties only make sense for internal engineering builds.
/** The time at which the build was produced, given in milliseconds since the UNIX epoch. */
public static final long TIME = getLong("ro.build.date.utc") * 1000;
public static final String USER = getString("ro.build.user");
public static final String HOST = getString("ro.build.host");