Use fsverity metadata file for authfs

Instead of alternative signature and merkle tree, authfs will use
.fsv_meta files, which are installed to the system partition with
PRODUCT_SYSTEM_FSVERITY_GENERATE_METADATA Makefile.

Bug: 205987437
Test: atest ComposHostTestCases AuthFsTestCase
Test: run "atest ." inside authfs/tests
Change-Id: Ia9db78663e0e322c7a59305c67ac5b84716d8efe
diff --git a/authfs/tests/AndroidTest.xml b/authfs/tests/AndroidTest.xml
index 643e2b4..cc358f2 100644
--- a/authfs/tests/AndroidTest.xml
+++ b/authfs/tests/AndroidTest.xml
@@ -40,20 +40,14 @@
         <option name="push-file" key="input.4m" value="/data/local/tmp/authfs/input.4m" />
         <option name="push-file" key="input.4k1" value="/data/local/tmp/authfs/input.4k1" />
         <option name="push-file" key="input.4k" value="/data/local/tmp/authfs/input.4k" />
-        <option name="push-file" key="input.4m.fsv_sig"
-            value="/data/local/tmp/authfs/input.4m.fsv_sig" />
-        <option name="push-file" key="input.4k1.fsv_sig"
-            value="/data/local/tmp/authfs/input.4k1.fsv_sig" />
-        <option name="push-file" key="input.4k.fsv_sig"
-            value="/data/local/tmp/authfs/input.4k.fsv_sig" />
-        <option name="push-file" key="input.4m.merkle_dump"
-            value="/data/local/tmp/authfs/input.4m.merkle_dump" />
-        <option name="push-file" key="input.4m.merkle_dump.bad"
-            value="/data/local/tmp/authfs/input.4m.merkle_dump.bad" />
-        <option name="push-file" key="input.4k1.merkle_dump"
-            value="/data/local/tmp/authfs/input.4k1.merkle_dump" />
-        <option name="push-file" key="input.4k.merkle_dump"
-            value="/data/local/tmp/authfs/input.4k.merkle_dump" />
+        <option name="push-file" key="input.4m.fsv_meta"
+            value="/data/local/tmp/authfs/input.4m.fsv_meta" />
+        <option name="push-file" key="input.4k1.fsv_meta"
+            value="/data/local/tmp/authfs/input.4k1.fsv_meta" />
+        <option name="push-file" key="input.4k.fsv_meta"
+            value="/data/local/tmp/authfs/input.4k.fsv_meta" />
+        <option name="push-file" key="input.4m.fsv_meta.bad_merkle"
+            value="/data/local/tmp/authfs/input.4m.fsv_meta.bad_merkle" />
     </target_preparer>
 
     <test class="com.android.compatibility.common.tradefed.testtype.JarHostTest" >
diff --git a/authfs/tests/java/src/com/android/fs/AuthFsHostTest.java b/authfs/tests/java/src/com/android/fs/AuthFsHostTest.java
index 101a349..acaead0 100644
--- a/authfs/tests/java/src/com/android/fs/AuthFsHostTest.java
+++ b/authfs/tests/java/src/com/android/fs/AuthFsHostTest.java
@@ -161,9 +161,8 @@
     public void testReadWithFsverityVerification_RemoteFile() throws Exception {
         // Setup
         runFdServerOnAndroid(
-                "--open-ro 3:input.4m --open-ro 4:input.4m.merkle_dump --open-ro 5:input.4m.fsv_sig"
-                        + " --open-ro 6:input.4m",
-                "--ro-fds 3:4:5 --ro-fds 6");
+                "--open-ro 3:input.4m --open-ro 4:input.4m.fsv_meta --open-ro 6:input.4m",
+                "--ro-fds 3:4 --ro-fds 6");
 
         runAuthFsOnMicrodroid(
                 "--remote-ro-file-unverified 6 --remote-ro-file 3:cert.der --cid "
@@ -186,10 +185,9 @@
     public void testReadWithFsverityVerification_RemoteSmallerFile() throws Exception {
         // Setup
         runFdServerOnAndroid(
-                "--open-ro 3:input.4k --open-ro 4:input.4k.merkle_dump --open-ro"
-                    + " 5:input.4k.fsv_sig --open-ro 6:input.4k1 --open-ro 7:input.4k1.merkle_dump"
-                    + " --open-ro 8:input.4k1.fsv_sig",
-                "--ro-fds 3:4:5 --ro-fds 6:7:8");
+                "--open-ro 3:input.4k --open-ro 4:input.4k.fsv_meta --open-ro"
+                    + " 6:input.4k1 --open-ro 7:input.4k1.fsv_meta",
+                "--ro-fds 3:4 --ro-fds 6:7");
         runAuthFsOnMicrodroid(
                 "--remote-ro-file 3:cert.der --remote-ro-file 6:cert.der --cid " + VMADDR_CID_HOST);
 
@@ -209,9 +207,8 @@
     public void testReadWithFsverityVerification_TamperedMerkleTree() throws Exception {
         // Setup
         runFdServerOnAndroid(
-                "--open-ro 3:input.4m --open-ro 4:input.4m.merkle_dump.bad "
-                        + "--open-ro 5:input.4m.fsv_sig",
-                "--ro-fds 3:4:5");
+                "--open-ro 3:input.4m --open-ro 4:input.4m.fsv_meta.bad_merkle",
+                "--ro-fds 3:4");
         runAuthFsOnMicrodroid("--remote-ro-file 3:cert.der --cid " + VMADDR_CID_HOST);
 
         // Verify