Merge "Introduce Pixel mailbox module" into main

mailbox/Android.bp

@@ -0,0 +1,21 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+cc_binary {
+    name: "dump_mailbox",
+    srcs: ["dump/dump_mailbox.cpp"],
+    init_rc: ["init.mailbox.rc"],
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+    shared_libs: [
+        "libbase",
+        "libdump",
+        "liblog",
+    ],
+    vendor: true,
+    relative_install_path: "dump",
+}

mailbox/dump/dump_mailbox.cpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <dump/pixel_dump.h>
+#include <android-base/file.h>
+
+int main() {
+    std::string outputDir = concatenatePath(BUGREPORT_PACKING_DIR, "mailbox");
+    if (mkdir(outputDir.c_str(), 0777) == -1) {
+        printf("Unable to create folder: %s\n", outputDir.c_str());
+        return 0;
+    }
+
+    copyFile("/sys/kernel/tracing/instances/goog_cpm_mailbox/trace",
+             concatenatePath(outputDir.c_str(), "goog_cpm_mailbox_trace").c_str());
+    copyFile("/sys/kernel/tracing/instances/goog_nq_mailbox/trace",
+             concatenatePath(outputDir.c_str(), "goog_nq_mailbox_trace").c_str());
+
+    return 0;
+}

mailbox/dump/sepolicy/dump_mailbox.te

@@ -0,0 +1,7 @@
+#
+pixel_bugreport(dump_mailbox)
+allow dump_mailbox radio_vendor_data_file:dir create_dir_perms;
+allow dump_mailbox radio_vendor_data_file:file create_file_perms;
+allow dump_mailbox debugfs_tracing_instances:file r_file_perms;
+allow dump_mailbox debugfs_tracing_instances:dir search;
+allow dump_mailbox debugfs_tracing_instances_mailbox:file r_file_perms;

mailbox/dump/sepolicy/file.te

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+#
+type debugfs_tracing_instances_mailbox, sysfs_type, fs_type;

mailbox/dump/sepolicy/file_contexts

@@ -0,0 +1 @@
+/vendor/bin/dump/dump_mailbox     u:object_r:dump_mailbox_exec:s0

mailbox/dump/sepolicy/genfs_contexts

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+genfscon tracefs /instances/goog_cpm_mailbox/trace u:object_r:debugfs_tracing_instances_mailbox:s0
+genfscon tracefs /instances/goog_nq_mailbox/trace  u:object_r:debugfs_tracing_instances_mailbox:s0

mailbox/init.mailbox.rc

@@ -0,0 +1,8 @@
+on property:sys.boot_completed=1
+    chown system system /sys/kernel/tracing/instances/goog_cpm_mailbox
+    chown system system /sys/kernel/tracing/instances/goog_cpm_mailbox/trace
+    write /sys/kernel/tracing/instances/goog_cpm_mailbox/buffer_size_kb 512
+
+    chown system system /sys/kernel/tracing/instances/goog_nq_mailbox
+    chown system system /sys/kernel/tracing/instances/goog_nq_mailbox/trace
+    write /sys/kernel/tracing/instances/goog_nq_mailbox/buffer_size_kb 512

mailbox/mailbox.mk

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+BOARD_VENDOR_SEPOLICY_DIRS += device/google/gs-common/mailbox/dump/sepolicy
+
+PRODUCT_PACKAGES += dump_mailbox