57 lines
1.1 KiB
Go
57 lines
1.1 KiB
Go
//go:build linux || freebsd
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// +build linux freebsd
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package docker
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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)
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func newUnixListener(path string, gid int) (net.Listener, string, error) {
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// try systemd socket activation
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fds := systemdActivationFiles()
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switch len(fds) {
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case 0:
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// fall thru
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case 1:
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listener, err := net.FileListener(fds[0])
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return listener, "", err
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default:
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return nil, "", fmt.Errorf("expected only one socket from systemd, got %d", len(fds))
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}
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// create socket outselves
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if filepath.Ext(path) == "" {
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path += ".sock"
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}
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if !filepath.IsAbs(path) {
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path = filepath.Join(sockDir, path)
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}
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if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
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return nil, "", err
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}
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if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
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return nil, "", err
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}
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listener, err := net.Listen("unix", path)
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if err != nil {
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return nil, "", err
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}
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if err = os.Chmod(path, 0660); err != nil {
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return nil, "", err
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}
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if os.Geteuid() == 0 {
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if err = os.Chown(path, 0, gid); err != nil {
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return nil, "", err
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}
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}
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// we don't use spec file with unix sockets
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return listener, path, nil
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}
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