[chore]: Bump github.com/KimMachineGun/automemlimit from 0.2.4 to 0.2.5 (#1666)

Bumps [github.com/KimMachineGun/automemlimit](https://github.com/KimMachineGun/automemlimit) from 0.2.4 to 0.2.5.
- [Release notes](https://github.com/KimMachineGun/automemlimit/releases)
- [Commits](https://github.com/KimMachineGun/automemlimit/compare/v0.2.4...v0.2.5)

---
updated-dependencies:
- dependency-name: github.com/KimMachineGun/automemlimit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

1 files changed, 150 insertions, 0 deletions

diff --git a/vendor/github.com/containerd/cgroups/v3/utils.go b/vendor/github.com/containerd/cgroups/v3/utils.go
new file mode 100644
index 000000000..ebff755a7
--- /dev/null
+++ b/vendor/github.com/containerd/cgroups/v3/utils.go
@@ -0,0 +1,150 @@
+/*
+   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
+}