Change handling of /cache due to AB devices not having cache

Change-Id: Ia9b97ed19eb3d400d9d399255108cac79361bca4
diff --git a/partitionmanager.cpp b/partitionmanager.cpp
index 26f48d8..40e0863 100644
--- a/partitionmanager.cpp
+++ b/partitionmanager.cpp
@@ -1237,26 +1237,26 @@
 	if (!Mount_By_Path("/data", true))
 		return false;
 
-	if (!Mount_By_Path("/cache", true))
-		return false;
-
 	dir.push_back("/data/dalvik-cache");
-	dir.push_back("/cache/dalvik-cache");
-	dir.push_back("/cache/dc");
-	gui_msg("wiping_dalvik=Wiping Dalvik Cache Directories...");
-	for (unsigned i = 0; i < dir.size(); ++i) {
-		if (stat(dir.at(i).c_str(), &st) == 0) {
-			TWFunc::removeDir(dir.at(i), false);
-			gui_msg(Msg("cleaned=Cleaned: {1}...")(dir.at(i)));
-		}
+	if (Mount_By_Path("/cache", false)) {
+		dir.push_back("/cache/dalvik-cache");
+		dir.push_back("/cache/dc");
 	}
+
 	TWPartition* sdext = Find_Partition_By_Path("/sd-ext");
 	if (sdext && sdext->Is_Present && sdext->Mount(false))
 	{
 		if (stat("/sd-ext/dalvik-cache", &st) == 0)
 		{
-			TWFunc::removeDir("/sd-ext/dalvik-cache", false);
-			gui_msg(Msg("cleaned=Cleaned: {1}...")("/sd-ext/dalvik-cache"));
+			dir.push_back("/sd-ext/dalvik-cache");
+		}
+	}
+
+	gui_msg("wiping_dalvik=Wiping Dalvik Cache Directories...");
+	for (unsigned i = 0; i < dir.size(); ++i) {
+		if (stat(dir.at(i).c_str(), &st) == 0) {
+			TWFunc::removeDir(dir.at(i), false);
+			gui_msg(Msg("cleaned=Cleaned: {1}...")(dir.at(i)));
 		}
 	}
 	gui_msg("dalvik_done=-- Dalvik Cache Directories Wipe Complete!");
diff --git a/twrp-functions.cpp b/twrp-functions.cpp
index 72674ae..9b0356f 100644
--- a/twrp-functions.cpp
+++ b/twrp-functions.cpp
@@ -498,8 +498,14 @@
 		chown("/cache/recovery/log", 1000, 1000);
 		chmod("/cache/recovery/log", 0600);
 		chmod("/cache/recovery/last_log", 0640);
+	} else if (PartitionManager.Mount_By_Path("/data", false) && TWFunc::Path_Exists("/data/cache/recovery/.")) {
+		Copy_Log(TMP_LOG_FILE, "/data/cache/recovery/log");
+		copy_file("/data/cache/recovery/log", "/data/cache/recovery/last_log", 600);
+		chown("/data/cache/recovery/log", 1000, 1000);
+		chmod("/data/cache/recovery/log", 0600);
+		chmod("/data/cache/recovery/last_log", 0640);
 	} else {
-		LOGINFO("Failed to mount /cache for TWFunc::Update_Log_File\n");
+		LOGINFO("Failed to mount /cache or find /data/cache for TWFunc::Update_Log_File\n");
 	}
 
 	// Reset bootloader message
@@ -515,7 +521,7 @@
 		}
 	}
 
-	if (PartitionManager.Mount_By_Path("/cache", true)) {
+	if (PartitionManager.Mount_By_Path("/cache", false)) {
 		if (unlink("/cache/recovery/command") && errno != ENOENT) {
 			LOGINFO("Can't unlink %s\n", "/cache/recovery/command");
 		}
diff --git a/twrp.cpp b/twrp.cpp
index 3cd716f..3531279 100644
--- a/twrp.cpp
+++ b/twrp.cpp
@@ -153,7 +153,7 @@
 	{ // Check to ensure SELinux can be supported by the kernel
 		char *contexts = NULL;
 
-		if (PartitionManager.Mount_By_Path("/cache", true) && TWFunc::Path_Exists("/cache/recovery")) {
+		if (PartitionManager.Mount_By_Path("/cache", false) && TWFunc::Path_Exists("/cache/recovery")) {
 			lgetfilecon("/cache/recovery", &contexts);
 			if (!contexts) {
 				lsetfilecon("/cache/recovery", "test");
@@ -174,7 +174,7 @@
 	gui_warn("no_selinux=No SELinux support (no libselinux).");
 #endif
 
-	PartitionManager.Mount_By_Path("/cache", true);
+	PartitionManager.Mount_By_Path("/cache", false);
 
 	bool Shutdown = false, Sideload = false;
 	string Send_Intent = "";