13549f7a07
This updates some methods for cross platform use as well as unifying _unix files. Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
// +build !windows
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/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package shim
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import (
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"context"
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"net"
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"path/filepath"
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"strings"
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"syscall"
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"time"
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"github.com/containerd/containerd/namespaces"
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"github.com/containerd/containerd/sys"
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"github.com/pkg/errors"
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)
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func getSysProcAttr() *syscall.SysProcAttr {
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return &syscall.SysProcAttr{
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Setpgid: true,
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}
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}
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// SetScore sets the oom score for a process
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func SetScore(pid int) error {
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return sys.SetOOMScore(pid, sys.OOMScoreMaxKillable)
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}
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// SocketAddress returns an abstract socket address
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func SocketAddress(ctx context.Context, id string) (string, error) {
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ns, err := namespaces.NamespaceRequired(ctx)
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if err != nil {
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return "", err
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}
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return filepath.Join(string(filepath.Separator), "containerd-shim", ns, id, "shim.sock"), nil
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}
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// AnonDialer returns a dialer for an abstract socket
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func AnonDialer(address string, timeout time.Duration) (net.Conn, error) {
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address = strings.TrimPrefix(address, "unix://")
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return net.DialTimeout("unix", "\x00"+address, timeout)
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}
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// NewSocket returns a new socket
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func NewSocket(address string) (*net.UnixListener, error) {
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if len(address) > 106 {
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return nil, errors.Errorf("%q: unix socket path too long (> 106)", address)
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}
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l, err := net.Listen("unix", "\x00"+address)
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if err != nil {
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return nil, errors.Wrapf(err, "failed to listen to abstract unix socket %q", address)
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}
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return l.(*net.UnixListener), nil
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}
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