mirror of
https://github.com/containers/podman.git
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309d989712
Bumps [github.com/containers/psgo](https://github.com/containers/psgo) from 1.5.2 to 1.6.0. - [Release notes](https://github.com/containers/psgo/releases) - [Commits](https://github.com/containers/psgo/compare/v1.5.2...v1.6.0) --- updated-dependencies: - dependency-name: github.com/containers/psgo dependency-type: direct:production update-type: version-update:semver-minor ... [NO TESTS NEEDED] since it's migrating to a new version. Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
// Copyright 2018 psgo authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package proc
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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)
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type IDMap struct {
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ContainerID int
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HostID int
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Size int
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}
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// ParsePIDNamespace returns the content of /proc/$pid/ns/pid.
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func ParsePIDNamespace(pid string) (string, error) {
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pidNS, err := os.Readlink(fmt.Sprintf("/proc/%s/ns/pid", pid))
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if err != nil {
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return "", err
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}
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return pidNS, nil
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}
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// ParseUserNamespace returns the content of /proc/$pid/ns/user.
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func ParseUserNamespace(pid string) (string, error) {
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userNS, err := os.Readlink(fmt.Sprintf("/proc/%s/ns/user", pid))
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if err != nil {
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return "", err
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}
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return userNS, nil
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}
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// ReadMappings reads the user namespace mappings at the specified path
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func ReadMappings(path string) ([]IDMap, error) {
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file, err := os.Open(path)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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mappings := []IDMap{}
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buf := bufio.NewReader(file)
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for {
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line, _, err := buf.ReadLine()
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if err != nil {
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if err == io.EOF {
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return mappings, nil
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}
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return nil, fmt.Errorf("cannot read line from %s: %w", path, err)
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}
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if line == nil {
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return mappings, nil
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}
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containerID, hostID, size := 0, 0, 0
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if _, err := fmt.Sscanf(string(line), "%d %d %d", &containerID, &hostID, &size); err != nil {
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return nil, fmt.Errorf("cannot parse %s: %w", string(line), err)
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}
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mappings = append(mappings, IDMap{ContainerID: containerID, HostID: hostID, Size: size})
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}
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}
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