satsuki: read model from lta-label

init_satsuki/init_satsuki.cpp

@@ -21,8 +21,10 @@
 #include <android-base/logging.h>
 
 #include <fcntl.h>
+#include <fstream>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string>
 #include <unistd.h>
 #include <sys/stat.h>
 #define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
@@ -34,17 +36,18 @@
 #include "util.h"
 
 using android::init::import_kernel_cmdline;
-using android::init::property_set;
 
-void property_override(char const prop[], char const value[])
+constexpr auto LTALABEL_PATH = "/dev/block/platform/soc.0/f9824900.sdhci/by-name/LTALabel";
+
+void property_override(char const prop[], char const value[], bool add = true)
 {
-    prop_info *pi;
+    auto pi = (prop_info *) __system_property_find(prop);
 
-    pi = (prop_info*) __system_property_find(prop);
-    if (pi)
+    if (pi != nullptr) {
         __system_property_update(pi, value, strlen(value));
-    else
+    } else if (add) {
         __system_property_add(prop, strlen(prop), value, strlen(value));
+    }
 }
 
 void property_override_dual(char const system_prop[], char const vendor_prop[], char const value[])
@@ -65,25 +68,31 @@ static void import_kernel_nv(const std::string& key,
 {
     if (key.empty()) return;
 
+    if (std::ifstream file = std::ifstream(LTALABEL_PATH, std::ios::binary)) {
+        std::string str((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
+        size_t offset = str.find("Model: ");
+
+        if (offset != std::string::npos) {
+            std::string model = str.substr(offset + strlen("Model: "), 5);
+            property_override("ro.semc.product.model", model.c_str());
+            property_override_triple("ro.product.model", "ro.product.system.model", "ro.product.vendor.model", model.c_str());
+            property_override_triple("ro.product.name", "ro.product.system.name", "ro.product.vendor.name", model.c_str());
+        }
+    }
+
     if (key == "oemandroidboot.phoneid") {
         // Dual Sim variant contains two IMEIs separated by comma.
         if ((count(value.begin(), value.end(),',')) > 0) {
-            property_set("persist.multisim.config", "dsds");
-            property_set("persist.radio.multisim.config", "dsds");
-            property_set("ro.telephony.default_network", "9,1");
-            property_set("ro.semc.product.model", "E6883");
-            property_set("ro.semc.product.name", "Xperia Z5 Premium Dual");
-            property_override_triple("ro.product.model", "ro.product.system.model", "ro.product.vendor.model", "E6883");
-            property_override_dual("ro.product.name", "ro.vendor.product.name", "satsuki_dsds");
+            property_override("persist.multisim.config", "dsds");
+            property_override("persist.radio.multisim.config", "dsds");
+            property_override("ro.telephony.default_network", "9,1");
+            property_override("ro.semc.product.name", "Xperia Z5 Premium Dual");
             property_override_triple("ro.product.device", "ro.product.system.device", "ro.product.vendor.device", "satsuki_dsds");
             property_override("ro.build.description", "E6883-user 7.1.1 32.4.A.1.54 3761073091 release-keys");
             property_override_triple("ro.build.fingerprint", "ro.system.build.fingerprint", "ro.vendor.build.fingerprint", "Sony/E6883/E6883:7.1.1/32.4.A.1.54/3761073091:user/release-keys");
         } else {
-            property_set("ro.telephony.default_network", "9");
-            property_set("ro.semc.product.model", "E6853");
-            property_set("ro.semc.product.name", "Xperia Z5 Premium");
-            property_override_triple("ro.product.model", "ro.product.system.model", "ro.product.vendor.model", "E6853");
-            property_override_dual("ro.product.name", "ro.vendor.product.name", "satsuki");
+            property_override("ro.telephony.default_network", "9");
+            property_override("ro.semc.product.name", "Xperia Z5 Premium");
             property_override_triple("ro.product.device", "ro.product.system.device", "ro.product.vendor.device", "satsuki");
             property_override("ro.build.description", "E6853-user 7.1.1 32.4.A.1.54 3761073091 release-keys");
             property_override_triple("ro.build.fingerprint", "ro.system.build.fingerprint", "ro.vendor.build.fingerprint", "Sony/E6853/E6853:7.1.1/32.4.A.1.54/3761073091:user/release-keys");