From 274819fc94f4e437d892e7dd2074d603fceaece5 Mon Sep 17 00:00:00 2001
From: Adam Shih <adamshih@google.com>
Date: Thu, 29 Sep 2022 15:19:27 +0800
Subject: [PATCH] move ramdump relate dumpstate to gs-common

Bug: 248428203
Test: adb bugreport
Change-Id: I19ffce8e883b3ab88eae1ff7373b35c0ed517aa9
---
 ramdump/Android.bp               | 12 ++++++++
 ramdump/dump_ramdump.cpp         | 53 ++++++++++++++++++++++++++++++++
 ramdump/ramdump.mk               |  3 ++
 ramdump/sepolicy/dump_ramdump.te | 10 ++++++
 ramdump/sepolicy/file_contexts   |  2 ++
 5 files changed, 80 insertions(+)
 create mode 100644 ramdump/Android.bp
 create mode 100644 ramdump/dump_ramdump.cpp
 create mode 100644 ramdump/ramdump.mk
 create mode 100644 ramdump/sepolicy/dump_ramdump.te
 create mode 100644 ramdump/sepolicy/file_contexts

diff --git a/ramdump/Android.bp b/ramdump/Android.bp
new file mode 100644
index 0000000..4fd8dbb
--- /dev/null
+++ b/ramdump/Android.bp
@@ -0,0 +1,12 @@
+cc_binary {
+    name: "dump_ramdump",
+    srcs: ["dump_ramdump.cpp"],
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+    ],
+    shared_libs: ["libbase"],
+    vendor: true,
+    relative_install_path: "dump",
+}
diff --git a/ramdump/dump_ramdump.cpp b/ramdump/dump_ramdump.cpp
new file mode 100644
index 0000000..4be0c0c
--- /dev/null
+++ b/ramdump/dump_ramdump.cpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2022 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 <inttypes.h>
+#include <stdio.h>
+#include <string>
+#include <android-base/file.h>
+#include <android-base/stringprintf.h>
+
+struct abl_log_header {
+    uint64_t i;
+    uint64_t size;
+    char buf[];
+} __attribute__((packed));
+
+// Gzip binary data and dump in base64 format. Cmd to decode is also attached.
+void dumpGzippedFileInBase64(const char* title, const char* file_path) {
+    auto cmd = android::base::StringPrintf("gzip < %s | base64", file_path);
+    printf("------ %s, %s\n", title, cmd.c_str());
+    printf("base64 -d <<EOF | gunzip\n");
+    system(cmd.c_str());
+    printf("EOF\n");
+    return;
+}
+
+// Dump items related to ramdump.
+int main() {
+    setbuf(stdout, NULL);
+    std::string abl_log;
+    if (android::base::ReadFileToString("/mnt/vendor/ramdump/abl.log", &abl_log)) {
+        const struct abl_log_header *header = (const struct abl_log_header*) abl_log.c_str();
+        printf("------ Ramdump misc file: abl.log (i:0x%" PRIx64 " size:0x%" PRIx64 ") ------\n%s\n",
+               header->i, header->size, std::string(header->buf, header->i).c_str());
+    } else {
+        printf("*** Ramdump misc file: abl.log: File not found\n");
+    }
+
+    dumpGzippedFileInBase64("Ramdump misc file: acpm.lst (gzipped in base64)", "/mnt/vendor/ramdump/acpm.lst");
+    dumpGzippedFileInBase64("Ramdump misc file: s2d.lst (gzipped in base64)", "/mnt/vendor/ramdump/s2d.lst");
+    return 0;
+}
diff --git a/ramdump/ramdump.mk b/ramdump/ramdump.mk
new file mode 100644
index 0000000..5b34a67
--- /dev/null
+++ b/ramdump/ramdump.mk
@@ -0,0 +1,3 @@
+PRODUCT_PACKAGES_DEBUG += dump_ramdump
+
+BOARD_VENDOR_SEPOLICY_DIRS += device/google/gs-common/ramdump/sepolicy
diff --git a/ramdump/sepolicy/dump_ramdump.te b/ramdump/sepolicy/dump_ramdump.te
new file mode 100644
index 0000000..8bf6ccc
--- /dev/null
+++ b/ramdump/sepolicy/dump_ramdump.te
@@ -0,0 +1,10 @@
+pixel_bugreport(dump_ramdump)
+
+userdebug_or_eng(`
+  allow dump_ramdump mnt_vendor_file:dir search;
+  allow dump_ramdump vendor_shell_exec:file execute_no_trans;
+  allow dump_ramdump vendor_toolbox_exec:file execute_no_trans;
+
+  allow dump_ramdump ramdump_vendor_mnt_file:dir search;
+  allow dump_ramdump ramdump_vendor_mnt_file:file r_file_perms;
+')
diff --git a/ramdump/sepolicy/file_contexts b/ramdump/sepolicy/file_contexts
new file mode 100644
index 0000000..726f69d
--- /dev/null
+++ b/ramdump/sepolicy/file_contexts
@@ -0,0 +1,2 @@
+# dumpstate
+/vendor/bin/dump/dump_ramdump           u:object_r:dump_ramdump_exec:s0