From a8a951b50959074e6dbe604c5e0b5b376e316631 Mon Sep 17 00:00:00 2001
From: hmz007 <hmz007@gmail.com>
Date: Mon, 8 Jun 2020 14:55:17 +0800
Subject: [PATCH] android: vold: Support to ignore boot device

Signed-off-by: hmz007 <hmz007@gmail.com>
---
 system/vold/VolumeManager.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/system/vold/VolumeManager.cpp b/system/vold/VolumeManager.cpp
index dc6fae98ddb..755a3ab9f93 100644
--- a/system/vold/VolumeManager.cpp
+++ b/system/vold/VolumeManager.cpp
@@ -45,6 +45,7 @@
 #include <async_safe/log.h>
 
 #include <cutils/fs.h>
+#include <cutils/properties.h>
 #include <utils/Trace.h>
 
 #include <selinux/android.h>
@@ -212,6 +213,14 @@ void VolumeManager::handleBlockEvent(NetlinkEvent* evt) {
 
     if (devType != "disk") return;
 
+    char boot_devices[PROPERTY_VALUE_MAX];
+    property_get("ro.boot.boot_devices", boot_devices, "");
+    if (strlen(boot_devices) > 0 &&
+        eventPath.find(boot_devices) != std::string::npos) {
+        LOG(DEBUG) << "ignore boot device " << boot_devices;
+        return;
+    }
+
     int major = std::stoi(evt->findParam("MAJOR"));
     int minor = std::stoi(evt->findParam("MINOR"));
     dev_t device = makedev(major, minor);