mount: remove unused mount.PID()

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

mount/mountinfo_linux.go

@@ -1,35 +0,0 @@
-// +build linux
-
-/*
-   Copyright The containerd Authors.
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
-*/
-
-package mount
-
-import (
-	"github.com/moby/sys/mountinfo"
-)
-
-// Self retrieves a list of mounts for the current running process.
-func Self() ([]*Info, error) {
-	return mountinfo.GetMounts(nil)
-}
-
-// PID collects the mounts for a specific process ID. If the process
-// ID is unknown, it is better to use `Self` which will inspect
-// "/proc/self/mountinfo" instead.
-func PID(pid int) ([]*Info, error) {
-	return mountinfo.PidMountInfo(pid)
-}

mount/mountinfo_unix.go

@@ -1,4 +1,4 @@
-// +build freebsd openbsd
+// +build linux freebsd openbsd
 
 /*
    Copyright The containerd Authors.
@@ -19,9 +19,6 @@
 package mount
 
 import (
-	"fmt"
-	"runtime"
-
 	"github.com/moby/sys/mountinfo"
 )
 
@@ -29,8 +26,3 @@ import (
 func Self() ([]*Info, error) {
 	return mountinfo.GetMounts(nil)
 }
-
-// PID collects the mounts for a specific process ID.
-func PID(pid int) ([]*Info, error) {
-	return nil, fmt.Errorf("mountinfo.PID is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}

mount/mountinfo_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux,!freebsd,!solaris,!openbsd freebsd,!cgo solaris,!cgo openbsd,!cgo
+// +build !linux,!freebsd,!openbsd
 
 /*
    Copyright The containerd Authors.
@@ -27,8 +27,3 @@ import (
 func Self() ([]*Info, error) {
 	return nil, fmt.Errorf("mountinfo.Self is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
 }
-
-// PID collects the mounts for a specific process ID.
-func PID(pid int) ([]*Info, error) {
-	return nil, fmt.Errorf("mountinfo.PID is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}