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

@@ -76,10 +76,6 @@ linters:
       - path: _test\.go
         linters:
           - prealloc
-      - linters:
-          - unused
-        text: "(rootlessPortSyncR|rootlessPortSyncW)"
-
 issues:
   max-issues-per-linter: 0
   max-same-issues: 0

libpod/container.go

@@ -108,9 +108,6 @@ type Container struct {
 	runtime    *Runtime
 	ociRuntime OCIRuntime
 
-	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

@@ -221,10 +221,6 @@ 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_rootlessport.go

@@ -1187,29 +1187,11 @@ func (r *ConmonOCIRuntime) createOCIContainer(ctr *Container, restoreOptions *Co
 		// by the container and conmon will keep the ports busy so that another
 		// process cannot use them.
 		cmd.ExtraFiles = append(cmd.ExtraFiles, ports...)
-
-		// For rootless port forwarding, create sync pipe and leak write end to conmon
-		if rootless.IsRootless() && len(ctr.config.PortMappings) > 0 {
-			ctr.rootlessPortSyncR, ctr.rootlessPortSyncW, err = os.Pipe()
-			if err != nil {
-				return 0, fmt.Errorf("failed to create rootless port sync pipe: %w", err)
-			}
-			defer errorhandling.CloseQuiet(ctr.rootlessPortSyncW)
-			// Leak one end in conmon, the other one will be used by rootlessport
-			cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessPortSyncW)
-		}
 	} else {
 		// ports were bound in ctr.prepare() as we must do it before the netns setup
 		filesToClose = append(filesToClose, ctr.reservedPorts...)
 		cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.reservedPorts...)
 		ctr.reservedPorts = nil
-
-		// For rootless port forwarding, leak write end to conmon
-		// The pipes were created in setupRootlessPortMappingViaRLK() during network setup
-		if ctr.rootlessPortSyncW != nil {
-			defer errorhandling.CloseQuiet(ctr.rootlessPortSyncW)
-			cmd.ExtraFiles = append(cmd.ExtraFiles, ctr.rootlessPortSyncW)
-		}
 	}
 	var runtimeRestoreStarted time.Time
 	if restoreOptions != nil {