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// Copyright 2017 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package osutil
import (
"io/ioutil"
"path/filepath"
"syscall"
"unsafe"
)
// UmountAll recurusively unmounts all mounts in dir.
func UmountAll(dir string) {
files, _ := ioutil.ReadDir(dir)
for _, f := range files {
name := filepath.Join(dir, f.Name())
if f.IsDir() {
UmountAll(name)
}
fn := []byte(name + "\x00")
syscall.Syscall(syscall.SYS_UMOUNT2, uintptr(unsafe.Pointer(&fn[0])), syscall.MNT_FORCE, 0)
}
}
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