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// +build linux,!remote
package system
import (
"context"
"net"
"net/url"
"os"
"path/filepath"
api "github.com/containers/podman/v4/pkg/api/server"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/containers/podman/v4/pkg/domain/infra"
"github.com/containers/podman/v4/pkg/servicereaper"
"github.com/containers/podman/v4/pkg/util"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/pflag"
"golang.org/x/sys/unix"
)
func restService(flags *pflag.FlagSet, cfg *entities.PodmanConfig, opts entities.ServiceOptions) error {
var (
listener *net.Listener
err error
)
if opts.URI != "" {
uri, err := url.Parse(opts.URI)
if err != nil {
return errors.Errorf("%s is an invalid socket destination", opts.URI)
}
switch uri.Scheme {
case "unix":
path, err := filepath.Abs(uri.Path)
if err != nil {
return err
}
util.SetSocketPath(path)
if os.Getenv("LISTEN_FDS") != "" {
// If it is activated by systemd, use the first LISTEN_FD (3)
// instead of opening the socket file.
f := os.NewFile(uintptr(3), "podman.sock")
l, err := net.FileListener(f)
if err != nil {
return err
}
listener = &l
} else {
l, err := net.Listen(uri.Scheme, path)
if err != nil {
return errors.Wrapf(err, "unable to create socket")
}
listener = &l
}
case "tcp":
host := uri.Host
if host == "" {
// For backward compatibility, support "tcp:<host>:<port>" and "tcp://<host>:<port>"
host = uri.Opaque
}
l, err := net.Listen(uri.Scheme, host)
if err != nil {
return errors.Wrapf(err, "unable to create socket %v", host)
}
listener = &l
default:
logrus.Debugf("Attempting API Service endpoint scheme %q", uri.Scheme)
}
}
// Close stdin, so shortnames will not prompt
devNullfile, err := os.Open(os.DevNull)
if err != nil {
return err
}
defer devNullfile.Close()
if err := unix.Dup2(int(devNullfile.Fd()), int(os.Stdin.Fd())); err != nil {
return err
}
rt, err := infra.GetRuntime(context.Background(), flags, cfg)
if err != nil {
return err
}
servicereaper.Start()
infra.StartWatcher(rt)
server, err := api.NewServerWithSettings(rt, listener, opts)
if err != nil {
return err
}
defer func() {
if err := server.Shutdown(true); err != nil {
logrus.Warnf("Error when stopping API service: %s", err)
}
}()
err = server.Serve()
if listener != nil {
_ = (*listener).Close()
}
return err
}
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