Remove rootlessport dead code

Delete networking_rootlessport.go, rootlessPortSync pipes, and the
reloadRootlessRLKPortMapping stub.

Signed-off-by: Jan Rodák <hony.com@seznam.cz>

Author: Honny1

.golangci.yml

@@ -76,7 +76,6 @@ linters:
       - path: _test\.go
         linters:
           - prealloc
-
 issues:
   max-issues-per-linter: 0
   max-same-issues: 0

libpod/container.go

@@ -108,12 +108,6 @@ type Container struct {
 	runtime    *Runtime
 	ociRuntime OCIRuntime
 
-	rootlessSlirpSyncR *os.File
-	rootlessSlirpSyncW *os.File
-
-	rootlessPortSyncR *os.File
-	rootlessPortSyncW *os.File
-
 	// reservedPorts contains the fds for the bound ports when using the
 	// bridge network mode as root.
 	reservedPorts []*os.File

libpod/networking_freebsd.go

@@ -226,10 +226,6 @@ func (c *Container) inspectJoinedNetworkNS(_ string) (q types.StatusBlock, retEr
 	return types.StatusBlock{}, nil
 }
 
-func (c *Container) reloadRootlessRLKPortMapping() error {
-	return errors.New("unsupported (*Container).reloadRootlessRLKPortMapping")
-}
-
 func (r *Runtime) setupRootlessPortMappingViaPesto(_ *Container) error {
 	return errors.New("unsupported setupRootlessPortMappingViaPesto on FreeBSD")
 }

libpod/networking_slirp4netns.go

@@ -1193,34 +1193,6 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
 		cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.reservedPorts...)
 		ctr.reservedPorts = nil
 	}
-
-	if ctr.config.NetMode.IsSlirp4netns() || rootless.IsRootless() {
-		if ctr.config.PostConfigureNetNS {
-			havePortMapping := len(ctr.config.PortMappings) > 0
-			if havePortMapping {
-				ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
-				if err != nil {
-					return 0, fmt.Errorf("failed to create rootless port sync pipe: %w", err)
-				}
-			}
-			ctr.rootlessSlirpSyncR, ctr.rootlessSlirpSyncW, err = os.Pipe()
-			if err != nil {
-				return 0, fmt.Errorf("failed to create rootless network sync pipe: %w", err)
-			}
-		}
-
-		if ctr.rootlessSlirpSyncW != nil {
-			defer errorhandling.CloseQuiet(ctr.rootlessSlirpSyncW)
-			// Leak one end in conmon, the other one will be leaked into slirp4netns
-			cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessSlirpSyncW)
-		}
-
-		if ctr.rootlessPortSyncW != nil {
-			defer errorhandling.CloseQuiet(ctr.rootlessPortSyncW)
-			// Leak one end in conmon, the other one will be leaked into rootlessport
-			cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessPortSyncW)
-		}
-	}
 	var runtimeRestoreStarted time.Time
 	if restoreOptions != nil {
 		runtimeRestoreStarted = time.Now()