expose criu options for link remap and skip in flight

Signed-off-by: Daniel Levi-Minzi <dleviminzi@gmail.com>

checkpoint.go

@@ -31,6 +31,8 @@ checkpointed.`,
 		cli.StringFlag{Name: "parent-path", Value: "", Usage: "path for previous criu image files in pre-dump"},
 		cli.BoolFlag{Name: "leave-running", Usage: "leave the process running after checkpointing"},
 		cli.BoolFlag{Name: "tcp-established", Usage: "allow open tcp connections"},
+		cli.BoolFlag{Name: "tcp-skip-in-flight", Usage: "skip in-flight tcp connections"},
+		cli.BoolFlag{Name: "link-remap", Usage: "allow one to link unlinked files back when possible"},
 		cli.BoolFlag{Name: "ext-unix-sk", Usage: "allow external unix sockets"},
 		cli.BoolFlag{Name: "shell-job", Usage: "allow shell jobs"},
 		cli.BoolFlag{Name: "lazy-pages", Usage: "use userfaultfd to lazily restore memory pages"},
@@ -122,6 +124,8 @@ func criuOptions(context *cli.Context) (*libcontainer.CriuOpts, error) {
 		ParentImage:             parentPath,
 		LeaveRunning:            context.Bool("leave-running"),
 		TcpEstablished:          context.Bool("tcp-established"),
+		TcpSkipInFlight:         context.Bool("tcp-skip-in-flight"),
+		LinkRemap:               context.Bool("link-remap"),
 		ExternalUnixConnections: context.Bool("ext-unix-sk"),
 		ShellJob:                context.Bool("shell-job"),
 		FileLocks:               context.Bool("file-locks"),

contrib/completions/bash/runc

@@ -507,6 +507,8 @@ _runc_checkpoint() {
 	   -h
 	   --leave-running
 	   --tcp-established
+	   --tcp-skip-in-flight
+	   --link-remap
 	   --ext-unix-sk
 	   --shell-job
 	   --lazy-pages

libcontainer/criu_linux.go

@@ -327,6 +327,8 @@ func (c *Container) Checkpoint(criuOpts *CriuOpts) error {
 		ShellJob:          proto.Bool(criuOpts.ShellJob),
 		LeaveRunning:      proto.Bool(criuOpts.LeaveRunning),
 		TcpEstablished:    proto.Bool(criuOpts.TcpEstablished),
+		TcpSkipInFlight:   proto.Bool(criuOpts.TcpSkipInFlight),
+		LinkRemap:         proto.Bool(criuOpts.LinkRemap),
 		ExtUnixSk:         proto.Bool(criuOpts.ExternalUnixConnections),
 		FileLocks:         proto.Bool(criuOpts.FileLocks),
 		EmptyNs:           proto.Uint32(criuOpts.EmptyNs),

libcontainer/criu_opts_linux.go

@@ -16,6 +16,8 @@ type CriuOpts struct {
 	ParentImage             string             // directory for storing parent image files in pre-dump and dump
 	LeaveRunning            bool               // leave container in running state after checkpoint
 	TcpEstablished          bool               // checkpoint/restore established TCP connections
+	TcpSkipInFlight         bool               // skip in-flight TCP connections
+	LinkRemap               bool               // allow one to link unlinked files back when possible
 	ExternalUnixConnections bool               // allow external unix connections
 	ShellJob                bool               // allow to dump and restore shell jobs
 	FileLocks               bool               // handle file locks, for safety

man/runc-checkpoint.8.md

@@ -28,6 +28,14 @@ image files directory.
 : Allow checkpoint/restore of established TCP connections. See
 [criu --tcp-establised option](https://criu.org/CLI/opt/--tcp-established).
 
+**--tcp-skip-in-flight**
+: Skip in-flight TCP connections. See
+[criu --skip-in-flight option](https://criu.org/CLI/opt/--skip-in-flight).
+
+**--link-remap**
+: Allow one to link unlinked files back when possible. See
+[criu --link-remap option](https://criu.org/CLI/opt/--link-remap).
+
 **--ext-unix-sk**
 : Allow checkpoint/restore of external unix sockets. See
 [criu --ext-unix-sk option](https://criu.org/CLI/opt/--ext-unix-sk).