diff --git a/twrp-functions.hpp b/twrp-functions.hpp
index fc2d647..d7dea3f 100644
--- a/twrp-functions.hpp
+++ b/twrp-functions.hpp
@@ -1,50 +1,54 @@
-#ifndef _TWRPFUNCTIONS_HPP
-#define _TWRPFUNCTIONS_HPP
-
-#include <string>
-
-using namespace std;
-
-typedef enum
-{
-    rb_current = 0,
-    rb_system,
-    rb_recovery,
-    rb_poweroff,
-    rb_bootloader,     // May also be fastboot
-    rb_download,
-} RebootCommand;
-
-// Partition class
-class TWFunc
-{
-public:
-	static int Check_MD5(string File);
-	static string Get_Root_Path(string Path);                                   // Trims any trailing folders or filenames from the path, also adds a leading / if not present
-	static string Get_Path(string Path);                                        // Trims everything after the last / in the string
-	static string Get_Filename(string Path);                                    // Trims the path off of a filename
-
-	static void install_htc_dumlock(void);                                      // Installs HTC Dumlock
-	static void htc_dumlock_restore_original_boot(void);                        // Restores the backup of boot from HTC Dumlock
-	static void htc_dumlock_reflash_recovery_to_boot(void);                     // Reflashes the current recovery to boot
-	static int Recursive_Mkdir(string Path);                                    // Recursively makes the entire path
-	static unsigned long long Get_Folder_Size(const string& Path, bool Display_Error); // Gets the size of a folder and all of its subfolders using dirent and stat
-	static bool Path_Exists(string Path);                                       // Returns true if the path exists
-	static void GUI_Operation_Text(string Read_Value, string Default_Text);     // Updates text for display in the GUI, e.g. Backing up %partition name%
-	static void GUI_Operation_Text(string Read_Value, string Partition_Name, string Default_Text); // Same as above but includes partition name
-	static unsigned long Get_File_Size(string Path);                            // Returns the size of a file
-	static void twfinish_recovery(const char *send_intent);                     // Writes the log to last_log
-	static int tw_reboot(RebootCommand command);                                // Prepares the device for rebooting
-	static void check_and_run_script(const char* script_file, const char* display_name); // checks for the existence of a script, chmods it to 755, then runs it
-	static int Exec_Cmd(string cmd, string &result); //execute a command and return the result as a string by reference
-	static int removeDir(const string path, bool removeParent); //recursively remove a directory
-	static int copy_file(string src, string dst, int mode); //copy file from src to dst with mode permissions
-	static unsigned int Get_D_Type_From_Stat(string Path);                      // Returns a dirent dt_type value using stat instead of dirent
-
-private:
-	static void check_and_fclose(FILE *fp, const char *name);
-	static void copy_log_file(const char* source, const char* destination, int append);
-
-};
-
-#endif // _TWRPFUNCTIONS_HPP
+#ifndef _TWRPFUNCTIONS_HPP
+#define _TWRPFUNCTIONS_HPP
+
+#include <string>
+
+using namespace std;
+
+typedef enum
+{
+    rb_current = 0,
+    rb_system,
+    rb_recovery,
+    rb_poweroff,
+    rb_bootloader,     // May also be fastboot
+    rb_download,
+} RebootCommand;
+
+// Partition class
+class TWFunc
+{
+public:
+	static int Check_MD5(string File);
+	static string Get_Root_Path(string Path);                                   // Trims any trailing folders or filenames from the path, also adds a leading / if not present
+	static string Get_Path(string Path);                                        // Trims everything after the last / in the string
+	static string Get_Filename(string Path);                                    // Trims the path off of a filename
+
+	static void install_htc_dumlock(void);                                      // Installs HTC Dumlock
+	static void htc_dumlock_restore_original_boot(void);                        // Restores the backup of boot from HTC Dumlock
+	static void htc_dumlock_reflash_recovery_to_boot(void);                     // Reflashes the current recovery to boot
+	static int Recursive_Mkdir(string Path);                                    // Recursively makes the entire path
+	static unsigned long long Get_Folder_Size(const string& Path, bool Display_Error); // Gets the size of a folder and all of its subfolders using dirent and stat
+	static bool Path_Exists(string Path);                                       // Returns true if the path exists
+	static void GUI_Operation_Text(string Read_Value, string Default_Text);     // Updates text for display in the GUI, e.g. Backing up %partition name%
+	static void GUI_Operation_Text(string Read_Value, string Partition_Name, string Default_Text); // Same as above but includes partition name
+	static unsigned long Get_File_Size(string Path);                            // Returns the size of a file
+	static void twfinish_recovery(const char *send_intent);                     // Writes the log to last_log
+	static int tw_reboot(RebootCommand command);                                // Prepares the device for rebooting
+	static void check_and_run_script(const char* script_file, const char* display_name); // checks for the existence of a script, chmods it to 755, then runs it
+	static int Exec_Cmd(string cmd, string &result); //execute a command and return the result as a string by reference
+	static int removeDir(const string path, bool removeParent); //recursively remove a directory
+	static int copy_file(string src, string dst, int mode); //copy file from src to dst with mode permissions
+	static unsigned int Get_D_Type_From_Stat(string Path);                      // Returns a dirent dt_type value using stat instead of dirent
+	static timespec timespec_diff(timespec& start, timespec& end);	            // Return a diff for 2 times
+	static int read_file(string fn, string& results); //read from file
+	static int write_file(string fn, string& line); //write from file
+	static int drop_caches(void); //drop linux cache memory
+
+private:
+	static void check_and_fclose(FILE *fp, const char *name);
+	static void copy_log_file(const char* source, const char* destination, int append);
+
+};
+
+#endif // _TWRPFUNCTIONS_HPP