diff options
author | 2025-02-03 10:12:35 +0000 | |
---|---|---|
committer | 2025-02-03 10:12:35 +0000 | |
commit | c086d4048c2a26a0bf70c1ced24c78680a786710 (patch) | |
tree | cf7606e8452e9047d7f0e0d9b6de10edf7ebdc89 /vendor/github.com/containerd/cgroups/v3/utils.go | |
parent | [chore]: Bump golang.org/x/oauth2 from 0.24.0 to 0.25.0 (#3725) (diff) | |
download | gotosocial-c086d4048c2a26a0bf70c1ced24c78680a786710.tar.xz |
[chore]: Bump github.com/KimMachineGun/automemlimit from 0.6.1 to 0.7.0 (#3726)
Bumps [github.com/KimMachineGun/automemlimit](https://github.com/KimMachineGun/automemlimit) from 0.6.1 to 0.7.0.
- [Release notes](https://github.com/KimMachineGun/automemlimit/releases)
- [Commits](https://github.com/KimMachineGun/automemlimit/compare/v0.6.1...v0.7.0)
---
updated-dependencies:
- dependency-name: github.com/KimMachineGun/automemlimit
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Diffstat (limited to 'vendor/github.com/containerd/cgroups/v3/utils.go')
-rw-r--r-- | vendor/github.com/containerd/cgroups/v3/utils.go | 150 |
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 -} |