security: Moved cache dropping function

1 files changed, 0 insertions, 17 deletions

diff --git a/util/util.go b/util/util.go
index acdc3fc..14d23e2 100644
--- a/util/util.go
+++ b/util/util.go
@@ -25,7 +25,6 @@ package util
 
 import (
 	"bufio"
-	"log"
 	"math"
 	"os"
 	"unsafe"
@@ -98,19 +97,3 @@ func ReadLine() (string, error) {
 	scanner.Scan()
 	return scanner.Text(), scanner.Err()
 }
-
-// DropInodeCache instructs the kernel to clear the global cache of inodes and
-// dentries. This has the effect of making encrypted directories whose keys
-// are not present no longer accessible. Requires root privileges.
-func DropInodeCache() error {
-	log.Print("dropping page caches")
-	// See: https://www.kernel.org/doc/Documentation/sysctl/vm.txt
-	file, err := os.OpenFile("/proc/sys/vm/drop_caches", os.O_WRONLY|os.O_SYNC, 0)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-	// "2" just clears the inodes and dentries
-	_, err = file.WriteString("2")
-	return err
-}