1 files changed, 0 insertions, 150 deletions
diff --git a/vendor/github.com/containerd/cgroups/v3/utils.go b/vendor/github.com/containerd/cgroups/v3/utils.go
deleted file mode 100644
index ebff755a7..000000000
--- a/vendor/github.com/containerd/cgroups/v3/utils.go
+++ /dev/null
@@ -1,150 +0,0 @@
-/*
-   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 cgroups
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-
-	"golang.org/x/sys/unix"
-)
-
-var (
-	nsOnce    sync.Once
-	inUserNS  bool
-	checkMode sync.Once
-	cgMode    CGMode
-)
-
-const unifiedMountpoint = "/sys/fs/cgroup"
-
-// CGMode is the cgroups mode of the host system
-type CGMode int
-
-const (
-	// Unavailable cgroup mountpoint
-	Unavailable CGMode = iota
-	// Legacy cgroups v1
-	Legacy
-	// Hybrid with cgroups v1 and v2 controllers mounted
-	Hybrid
-	// Unified with only cgroups v2 mounted
-	Unified
-)
-
-// Mode returns the cgroups mode running on the host
-func Mode() CGMode {
-	checkMode.Do(func() {
-		var st unix.Statfs_t
-		if err := unix.Statfs(unifiedMountpoint, &st); err != nil {
-			cgMode = Unavailable
-			return
-		}
-		switch st.Type {
-		case unix.CGROUP2_SUPER_MAGIC:
-			cgMode = Unified
-		default:
-			cgMode = Legacy
-			if err := unix.Statfs(filepath.Join(unifiedMountpoint, "unified"), &st); err != nil {
-				return
-			}
-			if st.Type == unix.CGROUP2_SUPER_MAGIC {
-				cgMode = Hybrid
-			}
-		}
-	})
-	return cgMode
-}
-
-// RunningInUserNS detects whether we are currently running in a user namespace.
-// Copied from github.com/lxc/lxd/shared/util.go
-func RunningInUserNS() bool {
-	nsOnce.Do(func() {
-		file, err := os.Open("/proc/self/uid_map")
-		if err != nil {
-			// This kernel-provided file only exists if user namespaces are supported
-			return
-		}
-		defer file.Close()
-
-		buf := bufio.NewReader(file)
-		l, _, err := buf.ReadLine()
-		if err != nil {
-			return
-		}
-
-		line := string(l)
-		var a, b, c int64
-		fmt.Sscanf(line, "%d %d %d", &a, &b, &c)
-
-		/*
-		 * We assume we are in the initial user namespace if we have a full
-		 * range - 4294967295 uids starting at uid 0.
-		 */
-		if a == 0 && b == 0 && c == 4294967295 {
-			return
-		}
-		inUserNS = true
-	})
-	return inUserNS
-}
-
-// ParseCgroupFileUnified returns legacy subsystem paths as the first value,
-// and returns the unified path as the second value.
-func ParseCgroupFileUnified(path string) (map[string]string, string, error) {
-	f, err := os.Open(path)
-	if err != nil {
-		return nil, "", err
-	}
-	defer f.Close()
-	return ParseCgroupFromReaderUnified(f)
-}
-
-// ParseCgroupFromReaderUnified returns legacy subsystem paths as the first value,
-// and returns the unified path as the second value.
-func ParseCgroupFromReaderUnified(r io.Reader) (map[string]string, string, error) {
-	var (
-		cgroups = make(map[string]string)
-		unified = ""
-		s       = bufio.NewScanner(r)
-	)
-	for s.Scan() {
-		var (
-			text  = s.Text()
-			parts = strings.SplitN(text, ":", 3)
-		)
-		if len(parts) < 3 {
-			return nil, unified, fmt.Errorf("invalid cgroup entry: %q", text)
-		}
-		for _, subs := range strings.Split(parts[1], ",") {
-			if subs == "" {
-				unified = parts[2]
-			} else {
-				cgroups[subs] = parts[2]
-			}
-		}
-	}
-	if err := s.Err(); err != nil {
-		return nil, unified, err
-	}
-	return cgroups, unified, nil
-}