diff options
Diffstat (limited to 'vendor/github.com/containerd/cgroups/v1.go')
-rw-r--r-- | vendor/github.com/containerd/cgroups/v1.go | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/vendor/github.com/containerd/cgroups/v1.go b/vendor/github.com/containerd/cgroups/v1.go deleted file mode 100644 index a076d4692..000000000 --- a/vendor/github.com/containerd/cgroups/v1.go +++ /dev/null @@ -1,81 +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" - "os" - "path/filepath" - "strings" -) - -// V1 returns all the groups in the default cgroups mountpoint in a single hierarchy -func V1() ([]Subsystem, error) { - root, err := v1MountPoint() - if err != nil { - return nil, err - } - subsystems, err := defaults(root) - if err != nil { - return nil, err - } - var enabled []Subsystem - for _, s := range pathers(subsystems) { - // check and remove the default groups that do not exist - if _, err := os.Lstat(s.Path("/")); err == nil { - enabled = append(enabled, s) - } - } - return enabled, nil -} - -// v1MountPoint returns the mount point where the cgroup -// mountpoints are mounted in a single hiearchy -func v1MountPoint() (string, error) { - f, err := os.Open("/proc/self/mountinfo") - if err != nil { - return "", err - } - defer f.Close() - scanner := bufio.NewScanner(f) - for scanner.Scan() { - if err := scanner.Err(); err != nil { - return "", err - } - var ( - text = scanner.Text() - fields = strings.Split(text, " ") - // safe as mountinfo encodes mountpoints with spaces as \040. - index = strings.Index(text, " - ") - postSeparatorFields = strings.Fields(text[index+3:]) - numPostFields = len(postSeparatorFields) - ) - // this is an error as we can't detect if the mount is for "cgroup" - if numPostFields == 0 { - return "", fmt.Errorf("Found no fields post '-' in %q", text) - } - if postSeparatorFields[0] == "cgroup" { - // check that the mount is properly formated. - if numPostFields < 3 { - return "", fmt.Errorf("Error found less than 3 fields post '-' in %q", text) - } - return filepath.Dir(fields[4]), nil - } - } - return "", ErrMountPointNotExist -} |