Add support for seccomp actions ActKillThread and ActKillProcess

Two new seccomp actions have been added to the libseccomp-golang
dependency, which can be now supported by runc, too.

ActKillThread kills the thread that violated the rule. It is the same as
ActKill. All other threads from the same thread group will continue to
execute.

ActKillProcess kills the process that violated the rule. All threads in
the thread group are also terminated. This action is only usable when
libseccomp API level 3 or higher is supported.

Signed-off-by: Sascha Grunert <sgrunert@suse.com>
Signed-off-by: Sascha Grunert <mail@saschagrunert.de>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/opencontainers/runtime-spec v1.0.3-0.20200929063507-e6143ca7d51d
 	github.com/opencontainers/selinux v1.8.0
 	github.com/pkg/errors v0.9.1
-	github.com/seccomp/libseccomp-golang v0.9.1
+	github.com/seccomp/libseccomp-golang v0.9.2-0.20200616122406-847368b35ebf
 	github.com/sirupsen/logrus v1.7.0
 	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
 	// NOTE: urfave/cli must be <= v1.22.1 due to a regression: https://github.com/urfave/cli/issues/1092

go.sum

@@ -44,8 +44,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/seccomp/libseccomp-golang v0.9.1 h1:NJjM5DNFOs0s3kYE1WUOr6G8V97sdt46rlXTMfXGWBo=
-github.com/seccomp/libseccomp-golang v0.9.1/go.mod h1:GbW5+tmTXfcxTToHLXlScSlAvWlF4P2Ca7zGrPiEpWo=
+github.com/seccomp/libseccomp-golang v0.9.2-0.20200616122406-847368b35ebf h1:b0+ZBD3rohnkQ4q5duD1+RyTXTg9yk+qTOPMSQtapO0=
+github.com/seccomp/libseccomp-golang v0.9.2-0.20200616122406-847368b35ebf/go.mod h1:JA8cRccbGaA1s33RQf7Y1+q9gHmZX1yB/z9WDN1C6fg=
 github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=

libcontainer/configs/config.go

@@ -46,6 +46,8 @@ const (
 	Allow
 	Trace
 	Log
+	KillThread
+	KillProcess
 )
 
 // Operator is a comparison operator to be used when matching syscall arguments in Seccomp

libcontainer/seccomp/seccomp_linux.go

@@ -103,6 +103,10 @@ func getAction(act configs.Action, errnoRet *uint) (libseccomp.ScmpAction, error
 	switch act {
 	case configs.Kill:
 		return actKill, nil
+	case configs.KillThread:
+		return libseccomp.ActKillThread, nil
+	case configs.KillProcess:
+		return libseccomp.ActKillProcess, nil
 	case configs.Errno:
 		if errnoRet != nil {
 			return libseccomp.ActErrno.SetReturnCode(int16(*errnoRet)), nil