Add log.wtf if ENOTSUPP occurs when attaching DHCP filter. am: 7619307a93

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/2175691

Change-Id: Ieede2174286e9eb420eaf7d64586c45424afb9ac
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

jni/network_stack_utils_jni.cpp

diff --git a/jni/network_stack_utils_jni.cpp b/jni/network_stack_utils_jni.cpp
index 6408856..63146d8 100644
--- a/jni/network_stack_utils_jni.cpp
+++ b/jni/network_stack_utils_jni.cpp
@@ -126,8 +126,7 @@
 
     int fd = netjniutils::GetNativeFileDescriptor(env, javaFd);
     if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)) != 0) {
-        jniThrowExceptionFmt(env, "java/net/SocketException",
-                "setsockopt(SO_ATTACH_FILTER): %s", strerror(errno));
+        jniThrowErrnoException(env, "setsockopt(SO_ATTACH_FILTER)", errno);
     }
 }
 

src/android/net/dhcp/DhcpClient.java

diff --git a/src/android/net/dhcp/DhcpClient.java b/src/android/net/dhcp/DhcpClient.java
index b41484c..34c37a2 100644
--- a/src/android/net/dhcp/DhcpClient.java
+++ b/src/android/net/dhcp/DhcpClient.java
@@ -699,6 +699,10 @@
                 Os.bind(mPacketSock, addr);
             } catch (SocketException | ErrnoException e) {
                 logError("Error creating packet socket", e);
+                if (e instanceof ErrnoException
+                        && ((ErrnoException) e).errno == 524 /* ENOTSUPP */) {
+                    Log.wtf(TAG, "Errno: ENOTSUPP");
+                }
                 closeFd(mPacketSock);
                 mPacketSock = null;
                 return null;

src/android/net/util/NetworkStackUtils.java

diff --git a/src/android/net/util/NetworkStackUtils.java b/src/android/net/util/NetworkStackUtils.java
index 7e0ca29..1730b9d 100755
--- a/src/android/net/util/NetworkStackUtils.java
+++ b/src/android/net/util/NetworkStackUtils.java
@@ -18,6 +18,7 @@
 
 import android.content.Context;
 import android.net.MacAddress;
+import android.system.ErrnoException;
 
 import androidx.annotation.NonNull;
 
@@ -277,7 +278,7 @@
     /**
      * Attaches a socket filter that accepts DHCP packets to the given socket.
      */
-    public static native void attachDhcpFilter(FileDescriptor fd) throws SocketException;
+    public static native void attachDhcpFilter(FileDescriptor fd) throws ErrnoException;
 
     /**
      * Attaches a socket filter that accepts ICMPv6 router advertisements to the given socket.