Update vendor or containers/common moving pkg/cgroups there

[NO NEW TESTS NEEDED] This is just moving pkg/cgroups out so
existing tests should be fine.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 0 insertions, 90 deletions

diff --git a/pkg/cgroups/cgroups_supported.go b/pkg/cgroups/cgroups_supported.go
deleted file mode 100644
index fe17db7f7..000000000
--- a/pkg/cgroups/cgroups_supported.go
+++ /dev/null
@@ -1,90 +0,0 @@
-// +build linux
-
-package cgroups
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-	"syscall"
-
-	"github.com/pkg/errors"
-	"golang.org/x/sys/unix"
-)
-
-var (
-	isUnifiedOnce sync.Once
-	isUnified     bool
-	isUnifiedErr  error
-)
-
-// IsCgroup2UnifiedMode returns whether we are running in cgroup 2 cgroup2 mode.
-func IsCgroup2UnifiedMode() (bool, error) {
-	isUnifiedOnce.Do(func() {
-		var st syscall.Statfs_t
-		if err := syscall.Statfs("/sys/fs/cgroup", &st); err != nil {
-			isUnified, isUnifiedErr = false, err
-		} else {
-			isUnified, isUnifiedErr = st.Type == unix.CGROUP2_SUPER_MAGIC, nil
-		}
-	})
-	return isUnified, isUnifiedErr
-}
-
-// UserOwnsCurrentSystemdCgroup checks whether the current EUID owns the
-// current cgroup.
-func UserOwnsCurrentSystemdCgroup() (bool, error) {
-	uid := os.Geteuid()
-
-	cgroup2, err := IsCgroup2UnifiedMode()
-	if err != nil {
-		return false, err
-	}
-
-	f, err := os.Open("/proc/self/cgroup")
-	if err != nil {
-		return false, err
-	}
-	defer f.Close()
-
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		line := scanner.Text()
-		parts := strings.SplitN(line, ":", 3)
-
-		if len(parts) < 3 {
-			continue
-		}
-
-		var cgroupPath string
-
-		if cgroup2 {
-			cgroupPath = filepath.Join(cgroupRoot, parts[2])
-		} else {
-			if parts[1] != "name=systemd" {
-				continue
-			}
-			cgroupPath = filepath.Join(cgroupRoot, "systemd", parts[2])
-		}
-
-		st, err := os.Stat(cgroupPath)
-		if err != nil {
-			return false, err
-		}
-		s := st.Sys()
-		if s == nil {
-			return false, fmt.Errorf("error stat cgroup path %s", cgroupPath)
-		}
-
-		if int(s.(*syscall.Stat_t).Uid) != uid {
-			return false, nil
-		}
-	}
-	if err := scanner.Err(); err != nil {
-		return false, errors.Wrapf(err, "parsing file /proc/self/cgroup")
-	}
-	return true, nil
-}