remove dependency of chmod

Author: ygerlach

src/Utility/CronTab.vala

@@ -307,7 +307,7 @@ public class CronTab : GLib.Object {
 
 		file_write(file_path, sh);
 		chown(file_path, "root", "root");
-		chmod(file_path, "644");
+		Posix.chmod(file_path, 0644);
 
 		log_msg(_("Added cron task") + ": %s".printf(file_path));
 

src/Utility/TeeJee.FileSystem.vala

@@ -506,11 +506,4 @@ namespace TeeJee.FileSystem{
 
 		return file_path.replace("'","'\\''");
 	}
-	
-	// dep: chmod
-	public int chmod(string file, string permission){
-
-		string cmd = "chmod %s '%s'".printf(permission, escape_single_quote(file));
-		return exec_sync (cmd, null, null);
-	}
 }

src/Utility/TeeJee.Process.vala

@@ -49,7 +49,7 @@ namespace TeeJee.ProcessHelper{
 
 			TEMP_DIR = tempPlace + "/timeshift-" + random_string();
 			dir_create(TEMP_DIR);
-			chmod(TEMP_DIR, "0750");
+			Posix.chmod(TEMP_DIR, 0750);
 			exec_script_sync("echo 'ok'",out std_out,out std_err, true);
 
 			if ((std_out == null) || (std_out.strip() != "ok")){
@@ -223,7 +223,7 @@ namespace TeeJee.ProcessHelper{
 		script.append ("echo ${exitCode} > status\n");
 
 		if ((sh_path == null) || (sh_path.length == 0)){
-			sh_path = get_temp_file_path() + ".sh";
+			sh_path = get_temp_file_path();
 		}
 
 		try{
@@ -238,7 +238,7 @@ namespace TeeJee.ProcessHelper{
 			data_stream.close();
 
 			// set execute permission
-			chmod (sh_path, "u+x");
+			Posix.chmod (sh_path, 0744);
 
 			return sh_path;
 		}