diff options
Diffstat (limited to 'libpod/networking_linux.go')
| -rw-r--r-- | libpod/networking_linux.go | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/libpod/networking_linux.go b/libpod/networking_linux.go index f1bf79ce7..a7f501bfe 100644 --- a/libpod/networking_linux.go +++ b/libpod/networking_linux.go @@ -154,13 +154,25 @@ func (r *Runtime) createNetNS(ctr *Container) (n ns.NetNS, q []*cnitypes.Result, return ctrNS, networkStatus, err } -func checkSlirpFlags(path string) (bool, bool, bool, error) { +type slirpFeatures struct { + HasDisableHostLoopback bool + HasMTU bool + HasEnableSandbox bool + HasEnableSeccomp bool +} + +func checkSlirpFlags(path string) (*slirpFeatures, error) { cmd := exec.Command(path, "--help") out, err := cmd.CombinedOutput() if err != nil { - return false, false, false, errors.Wrapf(err, "slirp4netns %q", out) - } - return strings.Contains(string(out), "--disable-host-loopback"), strings.Contains(string(out), "--mtu"), strings.Contains(string(out), "--enable-sandbox"), nil + return nil, errors.Wrapf(err, "slirp4netns %q", out) + } + return &slirpFeatures{ + HasDisableHostLoopback: strings.Contains(string(out), "--disable-host-loopback"), + HasMTU: strings.Contains(string(out), "--mtu"), + HasEnableSandbox: strings.Contains(string(out), "--enable-sandbox"), + HasEnableSeccomp: strings.Contains(string(out), "--enable-seccomp"), + }, nil } // Configure the network namespace for a rootless container @@ -187,19 +199,22 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) { logPath := filepath.Join(ctr.runtime.config.TmpDir, fmt.Sprintf("slirp4netns-%s.log", ctr.config.ID)) cmdArgs := []string{} - dhp, mtu, sandbox, err := checkSlirpFlags(path) + slirpFeatures, err := checkSlirpFlags(path) if err != nil { return errors.Wrapf(err, "error checking slirp4netns binary %s: %q", path, err) } - if dhp { + if slirpFeatures.HasDisableHostLoopback { cmdArgs = append(cmdArgs, "--disable-host-loopback") } - if mtu { + if slirpFeatures.HasMTU { cmdArgs = append(cmdArgs, "--mtu", "65520") } - if sandbox { + if slirpFeatures.HasEnableSandbox { cmdArgs = append(cmdArgs, "--enable-sandbox") } + if slirpFeatures.HasEnableSeccomp { + cmdArgs = append(cmdArgs, "--enable-seccomp") + } // the slirp4netns arguments being passed are describes as follows: // from the slirp4netns documentation: https://github.com/rootless-containers/slirp4netns @@ -230,7 +245,7 @@ func (r *Runtime) setupRootlessNetNS(ctr *Container) (err error) { } // workaround for https://github.com/rootless-containers/slirp4netns/pull/153 - if sandbox { + if slirpFeatures.HasEnableSandbox { cmd.SysProcAttr.Cloneflags = syscall.CLONE_NEWNS cmd.SysProcAttr.Unshareflags = syscall.CLONE_NEWNS } |