diff options
Diffstat (limited to 'android/os/Build.java')
| -rw-r--r-- | android/os/Build.java | 44 |
1 files changed, 39 insertions, 5 deletions
diff --git a/android/os/Build.java b/android/os/Build.java index 02c7bd64..48f56847 100644 --- a/android/os/Build.java +++ b/android/os/Build.java @@ -117,8 +117,14 @@ public class Build { public static final String SERIAL = getString("no.such.thing"); /** - * Gets the hardware serial, if available. - * @return The serial if specified. + * Gets the hardware serial number, if available. + * + * <p class="note"><b>Note:</b> Root access may allow you to modify device identifiers, such as + * the hardware serial number. If you change these identifiers, you can use + * <a href="/training/articles/security-key-attestation.html">key attestation</a> to obtain + * proof of the device's original identifiers. + * + * @return The serial number if specified. */ @RequiresPermission(Manifest.permission.READ_PHONE_STATE) public static String getSerial() { @@ -215,13 +221,31 @@ public class Build { public static final String SDK = getString("ro.build.version.sdk"); /** - * The user-visible SDK version of the framework; its possible - * values are defined in {@link Build.VERSION_CODES}. + * The SDK version of the software currently running on this hardware + * device. This value never changes while a device is booted, but it may + * increase when the hardware manufacturer provides an OTA update. + * <p> + * Possible values are defined in {@link Build.VERSION_CODES}. + * + * @see #FIRST_SDK_INT */ public static final int SDK_INT = SystemProperties.getInt( "ro.build.version.sdk", 0); /** + * The SDK version of the software that <em>initially</em> shipped on + * this hardware device. It <em>never</em> changes during the lifetime + * of the device, even when {@link #SDK_INT} increases due to an OTA + * update. + * <p> + * Possible values are defined in {@link Build.VERSION_CODES}. + * + * @see #SDK_INT + */ + public static final int FIRST_SDK_INT = SystemProperties + .getInt("ro.product.first_api_level", 0); + + /** * The developer preview revision of a prerelease SDK. This value will always * be <code>0</code> on production platform builds/devices. * @@ -264,6 +288,14 @@ public class Build { * @hide */ public static final int RESOURCES_SDK_INT = SDK_INT + ACTIVE_CODENAMES.length; + + /** + * The current lowest supported value of app target SDK. Applications targeting + * lower values will fail to install and run. Its possible values are defined + * in {@link Build.VERSION_CODES}. + */ + public static final int MIN_SUPPORTED_TARGET_SDK_INT = SystemProperties.getInt( + "ro.build.version.min_supported_target_sdk", 0); } /** @@ -937,7 +969,9 @@ public class Build { if (IS_ENG) return true; if (IS_TREBLE_ENABLED) { - int result = VintfObject.verify(new String[0]); + // If we can run this code, the device should already pass AVB. + // So, we don't need to check AVB here. + int result = VintfObject.verifyWithoutAvb(); if (result != 0) { Slog.e(TAG, "Vendor interface is incompatible, error=" |