Bump github.com/opencontainers/runc from 1.0.3 to 1.1.0

Bumps [github.com/opencontainers/runc](https://github.com/opencontainers/runc) from 1.0.3 to 1.1.0.
- [Release notes](https://github.com/opencontainers/runc/releases)
- [Changelog](https://github.com/opencontainers/runc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/opencontainers/runc/compare/v1.0.3...v1.1.0)

---
updated-dependencies:
- dependency-name: github.com/opencontainers/runc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -47,7 +47,7 @@ require (
 	github.com/onsi/gomega v1.17.0
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.0.3-0.20220114050600-8b9d41f48198
-	github.com/opencontainers/runc v1.0.3
+	github.com/opencontainers/runc v1.1.0
 	github.com/opencontainers/runtime-spec v1.0.3-0.20211214071223-8958f93039ab
 	github.com/opencontainers/runtime-tools v0.9.1-0.20220110225228-7e2d60f1e41f
 	github.com/opencontainers/selinux v1.10.0

go.sum

@@ -204,6 +204,7 @@ github.com/cilium/ebpf v0.0.0-20200702112145-1c8d4c9ef775/go.mod h1:7cR51M8ViRLI
 github.com/cilium/ebpf v0.2.0/go.mod h1:To2CFviqOWL/M0gIMsvSMlqe7em/l1ALkX1PyjrX2Qs=
 github.com/cilium/ebpf v0.4.0/go.mod h1:4tRaxcgiL706VnOzHOdBlY8IEAIdxINsQBcU4xJJXRs=
 github.com/cilium/ebpf v0.6.2/go.mod h1:4tRaxcgiL706VnOzHOdBlY8IEAIdxINsQBcU4xJJXRs=
+github.com/cilium/ebpf v0.7.0/go.mod h1:/oI2+1shJiTGAMgl6/RgJr36Eo1jzrRcAWbcXO2usCA=
 github.com/circonus-labs/circonus-gometrics v2.3.1+incompatible/go.mod h1:nmEj6Dob7S7YxXgwXpfOuvO54S+tGdZdw9fuRZt25Ag=
 github.com/circonus-labs/circonusllhist v0.1.3/go.mod h1:kMXHVDlOchFAehlya5ePtbp5jckzBHf4XRpQvBOLI+I=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
@@ -240,6 +241,7 @@ github.com/containerd/console v0.0.0-20181022165439-0650fd9eeb50/go.mod h1:Tj/on
 github.com/containerd/console v0.0.0-20191206165004-02ecf6a7291e/go.mod h1:8Pf4gM6VEbTNRIT26AyyU7hxdQU3MvAvxVI0sc00XBE=
 github.com/containerd/console v1.0.1/go.mod h1:XUsP6YE/mKtz6bxc+I8UiKKTP04qjQL4qcS3XoQ5xkw=
 github.com/containerd/console v1.0.2/go.mod h1:ytZPjGgY2oeTkAONYafi2kSj0aYggsf8acV1PGKCbzQ=
+github.com/containerd/console v1.0.3/go.mod h1:7LqA/THxQ86k76b8c/EMSiaJ3h1eZkMkXar0TQ1gf3U=
 github.com/containerd/containerd v1.2.10/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/containerd/containerd v1.3.0-beta.2.0.20190828155532-0293cbd26c69/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
 github.com/containerd/containerd v1.3.0/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
@@ -987,8 +989,9 @@ github.com/opencontainers/runc v1.0.0-rc8.0.20190926000215-3e425f80a8c9/go.mod h
 github.com/opencontainers/runc v1.0.0-rc9/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
 github.com/opencontainers/runc v1.0.0-rc93/go.mod h1:3NOsor4w32B2tC0Zbl8Knk4Wg84SM2ImC1fxBuqJ/H0=
 github.com/opencontainers/runc v1.0.2/go.mod h1:aTaHFFwQXuA71CiyxOdFFIorAoemI04suvGRQFzWTD0=
-github.com/opencontainers/runc v1.0.3 h1:1hbqejyQWCJBvtKAfdO0b1FmaEf2z/bxnjqbARass5k=
 github.com/opencontainers/runc v1.0.3/go.mod h1:aTaHFFwQXuA71CiyxOdFFIorAoemI04suvGRQFzWTD0=
+github.com/opencontainers/runc v1.1.0 h1:O9+X96OcDjkmmZyfaG996kV7yq8HsoU2h1XRRQcefG8=
+github.com/opencontainers/runc v1.1.0/go.mod h1:Tj1hFw6eFWp/o33uxGf5yF2BX5yz2Z6iptFpuvbbKqc=
 github.com/opencontainers/runtime-spec v0.1.2-0.20190507144316-5b71a03e2700/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
 github.com/opencontainers/runtime-spec v1.0.1/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
 github.com/opencontainers/runtime-spec v1.0.2-0.20190207185410-29686dbc5559/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
@@ -1114,8 +1117,9 @@ github.com/sclevine/agouti v3.0.0+incompatible/go.mod h1:b4WX9W9L1sfQKXeJf1mUTLZ
 github.com/sclevine/spec v1.2.0/go.mod h1:W4J29eT/Kzv7/b9IWLB055Z+qvVC9vt0Arko24q7p+U=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
 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/seccomp/libseccomp-golang v0.9.2-0.20210429002308-3879420cc921 h1:58EBmR2dMNL2n/FnbQewK3D14nXr0V9CObDSvMJLq+Y=
+github.com/seccomp/libseccomp-golang v0.9.2-0.20210429002308-3879420cc921/go.mod h1:JA8cRccbGaA1s33RQf7Y1+q9gHmZX1yB/z9WDN1C6fg=
 github.com/securego/gosec/v2 v2.9.1/go.mod h1:oDcDLcatOJxkCGaCaq8lua1jTnYf6Sou4wdiJ1n4iHc=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/shazow/go-diff v0.0.0-20160112020656-b6b7b6733b8c/go.mod h1:/PevMnwAxekIXwN8qQyfc5gl2NlkB3CQlkizAbOkeBs=
@@ -1582,6 +1586,7 @@ golang.org/x/sys v0.0.0-20210816183151-1e6c022a8912/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20210817190340-bfb29a6856f2/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210820121016-41cdb8703e55/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210823070655-63515b42dcdf/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210906170528-6f6e22806c34/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210908233432-aa78b53d3365/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210915083310-ed5796bab164/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210917161153-d61c044b1678/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -1590,6 +1595,7 @@ golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20211013075003-97ac67df715c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211107104306-e0b2ad06fe42/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211116061358-0a5406a5449c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211205182925-97ca703d548d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211214234402-4825e8c3871d/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

vendor/github.com/opencontainers/runc/libcontainer/apparmor/apparmor_linux.go

@@ -3,7 +3,6 @@ package apparmor
 import (
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"sync"
 
@@ -19,7 +18,7 @@ var (
 func isEnabled() bool {
 	checkAppArmor.Do(func() {
 		if _, err := os.Stat("/sys/kernel/security/apparmor"); err == nil {
-			buf, err := ioutil.ReadFile("/sys/module/apparmor/parameters/enabled")
+			buf, err := os.ReadFile("/sys/module/apparmor/parameters/enabled")
 			appArmorEnabled = err == nil && len(buf) > 1 && buf[0] == 'Y'
 		}
 	})
@@ -52,7 +51,7 @@ func setProcAttr(attr, value string) error {
 // changeOnExec reimplements aa_change_onexec from libapparmor in Go
 func changeOnExec(name string) error {
 	if err := setProcAttr("exec", "exec "+name); err != nil {
-		return fmt.Errorf("apparmor failed to apply profile: %s", err)
+		return fmt.Errorf("apparmor failed to apply profile: %w", err)
 	}
 	return nil
 }

vendor/github.com/opencontainers/runc/libcontainer/apparmor/apparmor_unsupported.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package apparmor

vendor/github.com/opencontainers/runc/libcontainer/cgroups/cgroups.go

@@ -1,5 +1,3 @@
-// +build linux
-
 package cgroups
 
 import (

vendor/github.com/opencontainers/runc/libcontainer/cgroups/cgroups_unsupported.go

@@ -1,3 +0,0 @@
-// +build !linux
-
-package cgroups

vendor/github.com/opencontainers/runc/libcontainer/cgroups/file.go

@@ -2,20 +2,27 @@ package cgroups
 
 import (
 	"bytes"
+	"errors"
+	"fmt"
 	"os"
+	"path"
+	"strconv"
 	"strings"
 	"sync"
 
-	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 	"golang.org/x/sys/unix"
 )
 
 // OpenFile opens a cgroup file in a given dir with given flags.
-// It is supposed to be used for cgroup files only.
+// It is supposed to be used for cgroup files only, and returns
+// an error if the file is not a cgroup file.
+//
+// Arguments dir and file are joined together to form an absolute path
+// to a file being opened.
 func OpenFile(dir, file string, flags int) (*os.File, error) {
 	if dir == "" {
-		return nil, errors.Errorf("no directory specified for %s", file)
+		return nil, fmt.Errorf("no directory specified for %s", file)
 	}
 	return openFile(dir, file, flags)
 }
@@ -43,7 +50,8 @@ func WriteFile(dir, file, data string) error {
 	}
 	defer fd.Close()
 	if err := retryingWriteFile(fd, data); err != nil {
-		return errors.Wrapf(err, "failed to write %q", data)
+		// Having data in the error message helps in debugging.
+		return fmt.Errorf("failed to write %q: %w", data, err)
 	}
 	return nil
 }
@@ -81,7 +89,7 @@ func prepareOpenat2() error {
 		})
 		if err != nil {
 			prepErr = &os.PathError{Op: "openat2", Path: cgroupfsDir, Err: err}
-			if err != unix.ENOSYS {
+			if err != unix.ENOSYS { //nolint:errorlint // unix errors are bare
 				logrus.Warnf("falling back to securejoin: %s", prepErr)
 			} else {
 				logrus.Debug("openat2 not available, falling back to securejoin")
@@ -107,8 +115,6 @@ func prepareOpenat2() error {
 	return prepErr
 }
 
-// OpenFile opens a cgroup file in a given dir with given flags.
-// It is supposed to be used for cgroup files only.
 func openFile(dir, file string, flags int) (*os.File, error) {
 	mode := os.FileMode(0)
 	if TestMode && flags&os.O_WRONLY != 0 {
@@ -116,34 +122,52 @@ func openFile(dir, file string, flags int) (*os.File, error) {
 		flags |= os.O_TRUNC | os.O_CREATE
 		mode = 0o600
 	}
+	path := path.Join(dir, file)
 	if prepareOpenat2() != nil {
-		return openFallback(dir, file, flags, mode)
+		return openFallback(path, flags, mode)
 	}
-	reldir := strings.TrimPrefix(dir, cgroupfsPrefix)
+	relPath := strings.TrimPrefix(path, cgroupfsPrefix)
-	if len(reldir) == len(dir) { // non-standard path, old system?
+	if len(relPath) == len(path) { // non-standard path, old system?
-		return openFallback(dir, file, flags, mode)
+		return openFallback(path, flags, mode)
 	}
 
-	relname := reldir + "/" + file
+	fd, err := unix.Openat2(cgroupFd, relPath,
-	fd, err := unix.Openat2(cgroupFd, relname,
 		&unix.OpenHow{
 			Resolve: resolveFlags,
 			Flags:   uint64(flags) | unix.O_CLOEXEC,
 			Mode:    uint64(mode),
 		})
 	if err != nil {
-		return nil, &os.PathError{Op: "openat2", Path: dir + "/" + file, Err: err}
+		err = &os.PathError{Op: "openat2", Path: path, Err: err}
+		// Check if cgroupFd is still opened to cgroupfsDir
+		// (happens when this package is incorrectly used
+		// across the chroot/pivot_root/mntns boundary, or
+		// when /sys/fs/cgroup is remounted).
+		//
+		// TODO: if such usage will ever be common, amend this
+		// to reopen cgroupFd and retry openat2.
+		fdStr := strconv.Itoa(cgroupFd)
+		fdDest, _ := os.Readlink("/proc/self/fd/" + fdStr)
+		if fdDest != cgroupfsDir {
+			// Wrap the error so it is clear that cgroupFd
+			// is opened to an unexpected/wrong directory.
+			err = fmt.Errorf("cgroupFd %s unexpectedly opened to %s != %s: %w",
+				fdStr, fdDest, cgroupfsDir, err)
+		}
+		return nil, err
 	}
 
-	return os.NewFile(uintptr(fd), cgroupfsPrefix+relname), nil
+	return os.NewFile(uintptr(fd), path), nil
 }
 
 var errNotCgroupfs = errors.New("not a cgroup file")
 
-// openFallback is used when openat2(2) is not available. It checks the opened
+// Can be changed by unit tests.
+var openFallback = openAndCheck
+
+// openAndCheck is used when openat2(2) is not available. It checks the opened
 // file is on cgroupfs, returning an error otherwise.
-func openFallback(dir, file string, flags int, mode os.FileMode) (*os.File, error) {
+func openAndCheck(path string, flags int, mode os.FileMode) (*os.File, error) {
-	path := dir + "/" + file
 	fd, err := os.OpenFile(path, flags, mode)
 	if err != nil {
 		return nil, err

vendor/github.com/opencontainers/runc/libcontainer/cgroups/getallpids.go

@@ -0,0 +1,27 @@
+package cgroups
+
+import (
+	"io/fs"
+	"path/filepath"
+)
+
+// GetAllPids returns all pids from the cgroup identified by path, and all its
+// sub-cgroups.
+func GetAllPids(path string) ([]int, error) {
+	var pids []int
+	err := filepath.WalkDir(path, func(p string, d fs.DirEntry, iErr error) error {
+		if iErr != nil {
+			return iErr
+		}
+		if !d.IsDir() {
+			return nil
+		}
+		cPids, err := readProcsFile(p)
+		if err != nil {
+			return err
+		}
+		pids = append(pids, cPids...)
+		return nil
+	})
+	return pids, err
+}

vendor/github.com/opencontainers/runc/libcontainer/cgroups/stats.go

@@ -1,5 +1,3 @@
-// +build linux
-
 package cgroups
 
 type ThrottlingData struct {
@@ -126,7 +124,7 @@ type BlkioStatEntry struct {
 }
 
 type BlkioStats struct {
-	// number of bytes tranferred to and from the block device
+	// number of bytes transferred to and from the block device
 	IoServiceBytesRecursive []BlkioStatEntry `json:"io_service_bytes_recursive,omitempty"`
 	IoServicedRecursive     []BlkioStatEntry `json:"io_serviced_recursive,omitempty"`
 	IoQueuedRecursive       []BlkioStatEntry `json:"io_queue_recursive,omitempty"`
@@ -146,6 +144,17 @@ type HugetlbStats struct {
 	Failcnt uint64 `json:"failcnt"`
 }
 
+type RdmaEntry struct {
+	Device     string `json:"device,omitempty"`
+	HcaHandles uint32 `json:"hca_handles,omitempty"`
+	HcaObjects uint32 `json:"hca_objects,omitempty"`
+}
+
+type RdmaStats struct {
+	RdmaLimit   []RdmaEntry `json:"rdma_limit,omitempty"`
+	RdmaCurrent []RdmaEntry `json:"rdma_current,omitempty"`
+}
+
 type Stats struct {
 	CpuStats    CpuStats    `json:"cpu_stats,omitempty"`
 	CPUSetStats CPUSetStats `json:"cpuset_stats,omitempty"`
@@ -154,6 +163,7 @@ type Stats struct {
 	BlkioStats  BlkioStats  `json:"blkio_stats,omitempty"`
 	// the map is in the format "size of hugepage: stats of the hugepage"
 	HugetlbStats map[string]HugetlbStats `json:"hugetlb_stats,omitempty"`
+	RdmaStats    RdmaStats               `json:"rdma_stats,omitempty"`
 }
 
 func NewStats() *Stats {

vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go

@@ -1,5 +1,3 @@
-// +build linux
-
 package cgroups
 
 import (
@@ -7,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strconv"
@@ -23,11 +20,14 @@ import (
 const (
 	CgroupProcesses   = "cgroup.procs"
 	unifiedMountpoint = "/sys/fs/cgroup"
+	hybridMountpoint  = "/sys/fs/cgroup/unified"
 )
 
 var (
 	isUnifiedOnce sync.Once
 	isUnified     bool
+	isHybridOnce  sync.Once
+	isHybrid      bool
 )
 
 // IsCgroup2UnifiedMode returns whether we are running in cgroup v2 unified mode.
@@ -49,6 +49,24 @@ func IsCgroup2UnifiedMode() bool {
 	return isUnified
 }
 
+// IsCgroup2HybridMode returns whether we are running in cgroup v2 hybrid mode.
+func IsCgroup2HybridMode() bool {
+	isHybridOnce.Do(func() {
+		var st unix.Statfs_t
+		err := unix.Statfs(hybridMountpoint, &st)
+		if err != nil {
+			if os.IsNotExist(err) {
+				// ignore the "not found" error
+				isHybrid = false
+				return
+			}
+			panic(fmt.Sprintf("cannot statfs cgroup root: %s", err))
+		}
+		isHybrid = st.Type == unix.CGROUP2_SUPER_MAGIC
+	})
+	return isHybrid
+}
+
 type Mount struct {
 	Mountpoint string
 	Root       string
@@ -118,8 +136,8 @@ func GetAllSubsystems() ([]string, error) {
 	return subsystems, nil
 }
 
-func readProcsFile(file string) ([]int, error) {
+func readProcsFile(dir string) ([]int, error) {
-	f, err := os.Open(file)
+	f, err := OpenFile(dir, CgroupProcesses, os.O_RDONLY)
 	if err != nil {
 		return nil, err
 	}
@@ -210,7 +228,7 @@ func EnterPid(cgroupPaths map[string]string, pid int) error {
 
 func rmdir(path string) error {
 	err := unix.Rmdir(path)
-	if err == nil || err == unix.ENOENT {
+	if err == nil || err == unix.ENOENT { //nolint:errorlint // unix errors are bare
 		return nil
 	}
 	return &os.PathError{Op: "rmdir", Path: path, Err: err}
@@ -224,7 +242,7 @@ func RemovePath(path string) error {
 		return nil
 	}
 
-	infos, err := ioutil.ReadDir(path)
+	infos, err := os.ReadDir(path)
 	if err != nil {
 		if os.IsNotExist(err) {
 			err = nil
@@ -284,40 +302,61 @@ func RemovePaths(paths map[string]string) (err error) {
 	return fmt.Errorf("Failed to remove paths: %v", paths)
 }
 
-func GetHugePageSize() ([]string, error) {
+var (
-	dir, err := os.OpenFile("/sys/kernel/mm/hugepages", unix.O_DIRECTORY|unix.O_RDONLY, 0)
+	hugePageSizes []string
-	if err != nil {
+	initHPSOnce   sync.Once
-		return nil, err
+)
-	}
-	files, err := dir.Readdirnames(0)
-	dir.Close()
-	if err != nil {
-		return nil, err
-	}
 
-	return getHugePageSizeFromFilenames(files)
+func HugePageSizes() []string {
+	initHPSOnce.Do(func() {
+		dir, err := os.OpenFile("/sys/kernel/mm/hugepages", unix.O_DIRECTORY|unix.O_RDONLY, 0)
+		if err != nil {
+			return
+		}
+		files, err := dir.Readdirnames(0)
+		dir.Close()
+		if err != nil {
+			return
+		}
+
+		hugePageSizes, err = getHugePageSizeFromFilenames(files)
+		if err != nil {
+			logrus.Warn("HugePageSizes: ", err)
+		}
+	})
+
+	return hugePageSizes
 }
 
 func getHugePageSizeFromFilenames(fileNames []string) ([]string, error) {
 	pageSizes := make([]string, 0, len(fileNames))
+	var warn error
 
 	for _, file := range fileNames {
 		// example: hugepages-1048576kB
 		val := strings.TrimPrefix(file, "hugepages-")
 		if len(val) == len(file) {
-			// unexpected file name: no prefix found
+			// Unexpected file name: no prefix found, ignore it.
 			continue
 		}
-		// The suffix is always "kB" (as of Linux 5.9)
+		// The suffix is always "kB" (as of Linux 5.13). If we find
+		// something else, produce an error but keep going.
 		eLen := len(val) - 2
 		val = strings.TrimSuffix(val, "kB")
 		if len(val) != eLen {
-			logrus.Warnf("GetHugePageSize: %s: invalid filename suffix (expected \"kB\")", file)
+			// Highly unlikely.
+			if warn == nil {
+				warn = errors.New(file + `: invalid suffix (expected "kB")`)
+			}
 			continue
 		}
 		size, err := strconv.Atoi(val)
 		if err != nil {
-			return nil, err
+			// Highly unlikely.
+			if warn == nil {
+				warn = fmt.Errorf("%s: %w", file, err)
+			}
+			continue
 		}
 		// Model after https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/mm/hugetlb_cgroup.c?id=eff48ddeab782e35e58ccc8853f7386bbae9dec4#n574
 		// but in our case the size is in KB already.
@@ -331,34 +370,12 @@ func getHugePageSizeFromFilenames(fileNames []string) ([]string, error) {
 		pageSizes = append(pageSizes, val)
 	}
 
-	return pageSizes, nil
+	return pageSizes, warn
 }
 
 // GetPids returns all pids, that were added to cgroup at path.
 func GetPids(dir string) ([]int, error) {
-	return readProcsFile(filepath.Join(dir, CgroupProcesses))
+	return readProcsFile(dir)
-}
-
-// GetAllPids returns all pids, that were added to cgroup at path and to all its
-// subcgroups.
-func GetAllPids(path string) ([]int, error) {
-	var pids []int
-	// collect pids from all sub-cgroups
-	err := filepath.Walk(path, func(p string, info os.FileInfo, iErr error) error {
-		if iErr != nil {
-			return iErr
-		}
-		if info.IsDir() || info.Name() != CgroupProcesses {
-			return nil
-		}
-		cPids, err := readProcsFile(p)
-		if err != nil {
-			return err
-		}
-		pids = append(pids, cPids...)
-		return nil
-	})
-	return pids, err
 }
 
 // WriteCgroupProc writes the specified pid into the cgroup's cgroup.procs file
@@ -376,7 +393,7 @@ func WriteCgroupProc(dir string, pid int) error {
 
 	file, err := OpenFile(dir, CgroupProcesses, os.O_WRONLY)
 	if err != nil {
-		return fmt.Errorf("failed to write %v to %v: %v", pid, CgroupProcesses, err)
+		return fmt.Errorf("failed to write %v: %w", pid, err)
 	}
 	defer file.Close()
 
@@ -393,7 +410,7 @@ func WriteCgroupProc(dir string, pid int) error {
 			continue
 		}
 
-		return fmt.Errorf("failed to write %v to %v: %v", pid, CgroupProcesses, err)
+		return fmt.Errorf("failed to write %v: %w", pid, err)
 	}
 	return err
 }
@@ -446,5 +463,5 @@ func ConvertBlkIOToIOWeightValue(blkIoWeight uint16) uint64 {
 	if blkIoWeight == 0 {
 		return 0
 	}
-	return uint64(1 + (uint64(blkIoWeight)-10)*9999/990)
+	return 1 + (uint64(blkIoWeight)-10)*9999/990
 }

vendor/github.com/opencontainers/runc/libcontainer/cgroups/v1_utils.go

@@ -46,11 +46,8 @@ func NewNotFoundError(sub string) error {
 }
 
 func IsNotFound(err error) bool {
-	if err == nil {
+	var nfErr *NotFoundError
-		return false
+	return errors.As(err, &nfErr)
-	}
-	_, ok := err.(*NotFoundError)
-	return ok
 }
 
 func tryDefaultPath(cgroupPath, subsystem string) string {
@@ -116,6 +113,11 @@ func FindCgroupMountpoint(cgroupPath, subsystem string) (string, error) {
 		return "", errUnified
 	}
 
+	// If subsystem is empty, we look for the cgroupv2 hybrid path.
+	if len(subsystem) == 0 {
+		return hybridMountpoint, nil
+	}
+
 	// Avoid parsing mountinfo by trying the default path first, if possible.
 	if path := tryDefaultPath(cgroupPath, subsystem); path != "" {
 		return path, nil
@@ -154,7 +156,7 @@ func findCgroupMountpointAndRootFromMI(mounts []*mountinfo.Info, cgroupPath, sub
 
 func (m Mount) GetOwnCgroup(cgroups map[string]string) (string, error) {
 	if len(m.Subsystems) == 0 {
-		return "", fmt.Errorf("no subsystem for mount")
+		return "", errors.New("no subsystem for mount")
 	}
 
 	return getControllerPath(m.Subsystems[0], cgroups)
@@ -226,6 +228,11 @@ func GetOwnCgroupPath(subsystem string) (string, error) {
 		return "", err
 	}
 
+	// If subsystem is empty, we look for the cgroupv2 hybrid path.
+	if len(subsystem) == 0 {
+		return hybridMountpoint, nil
+	}
+
 	return getCgroupPathHelper(subsystem, cgroup)
 }
 

vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_linux.go

@@ -28,17 +28,26 @@ type Cgroup struct {
 	// ScopePrefix describes prefix for the scope name
 	ScopePrefix string `json:"scope_prefix"`
 
-	// Paths represent the absolute cgroups paths to join.
-	// This takes precedence over Path.
-	Paths map[string]string
-
 	// Resources contains various cgroups settings to apply
 	*Resources
 
+	// Systemd tells if systemd should be used to manage cgroups.
+	Systemd bool
+
 	// SystemdProps are any additional properties for systemd,
 	// derived from org.systemd.property.xxx annotations.
 	// Ignored unless systemd is used for managing cgroups.
 	SystemdProps []systemdDbus.Property `json:"-"`
+
+	// Rootless tells if rootless cgroups should be used.
+	Rootless bool
+
+	// The host UID that should own the cgroup, or nil to accept
+	// the default ownership.  This should only be set when the
+	// cgroupfs is to be mounted read/write.
+	// Not all cgroup manager implementations support changing
+	// the ownership.
+	OwnerUID *int `json:"owner_uid,omitempty"`
 }
 
 type Resources struct {
@@ -117,6 +126,9 @@ type Resources struct {
 	// Set class identifier for container's network packets
 	NetClsClassid uint32 `json:"net_cls_classid_u"`
 
+	// Rdma resource restriction configuration
+	Rdma map[string]LinuxRdma `json:"rdma"`
+
 	// Used on cgroups v2:
 
 	// CpuWeight sets a proportional bandwidth limit.

vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_unsupported.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package configs

vendor/github.com/opencontainers/runc/libcontainer/configs/config.go

@@ -7,10 +7,10 @@ import (
 	"os/exec"
 	"time"
 
+	"github.com/sirupsen/logrus"
+
 	"github.com/opencontainers/runc/libcontainer/devices"
 	"github.com/opencontainers/runtime-spec/specs-go"
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
 )
 
 type Rlimit struct {
@@ -31,10 +31,12 @@ type IDMap struct {
 // for syscalls. Additional architectures can be added by specifying them in
 // Architectures.
 type Seccomp struct {
-	DefaultAction   Action     `json:"default_action"`
+	DefaultAction    Action     `json:"default_action"`
-	Architectures   []string   `json:"architectures"`
+	Architectures    []string   `json:"architectures"`
-	Syscalls        []*Syscall `json:"syscalls"`
+	Syscalls         []*Syscall `json:"syscalls"`
-	DefaultErrnoRet *uint      `json:"default_errno_ret"`
+	DefaultErrnoRet  *uint      `json:"default_errno_ret"`
+	ListenerPath     string     `json:"listener_path,omitempty"`
+	ListenerMetadata string     `json:"listener_metadata,omitempty"`
 }
 
 // Action is taken upon rule match in Seccomp
@@ -47,6 +49,9 @@ const (
 	Allow
 	Trace
 	Log
+	Notify
+	KillThread
+	KillProcess
 )
 
 // Operator is a comparison operator to be used when matching syscall arguments in Seccomp
@@ -246,6 +251,19 @@ const (
 	Poststop HookName = "poststop"
 )
 
+// KnownHookNames returns the known hook names.
+// Used by `runc features`.
+func KnownHookNames() []string {
+	return []string{
+		string(Prestart), // deprecated
+		string(CreateRuntime),
+		string(CreateContainer),
+		string(StartContainer),
+		string(Poststart),
+		string(Poststop),
+	}
+}
+
 type Capabilities struct {
 	// Bounding is the set of capabilities checked by the kernel.
 	Bounding []string
@@ -262,7 +280,7 @@ type Capabilities struct {
 func (hooks HookList) RunHooks(state *specs.State) error {
 	for i, h := range hooks {
 		if err := h.Run(state); err != nil {
-			return errors.Wrapf(err, "Running hook #%d:", i)
+			return fmt.Errorf("error running hook #%d: %w", i, err)
 		}
 	}
 
@@ -375,7 +393,7 @@ func (c Command) Run(s *specs.State) error {
 	go func() {
 		err := cmd.Wait()
 		if err != nil {
-			err = fmt.Errorf("error running hook: %v, stdout: %s, stderr: %s", err, stdout.String(), stderr.String())
+			err = fmt.Errorf("error running hook: %w, stdout: %s, stderr: %s", err, stdout.String(), stderr.String())
 		}
 		errC <- err
 	}()

vendor/github.com/opencontainers/runc/libcontainer/configs/config_linux.go

@@ -1,17 +1,24 @@
 package configs
 
-import "fmt"
+import "errors"
+
+var (
+	errNoUIDMap   = errors.New("User namespaces enabled, but no uid mappings found.")
+	errNoUserMap  = errors.New("User namespaces enabled, but no user mapping found.")
+	errNoGIDMap   = errors.New("User namespaces enabled, but no gid mappings found.")
+	errNoGroupMap = errors.New("User namespaces enabled, but no group mapping found.")
+)
 
 // HostUID gets the translated uid for the process on host which could be
 // different when user namespaces are enabled.
 func (c Config) HostUID(containerId int) (int, error) {
 	if c.Namespaces.Contains(NEWUSER) {
 		if c.UidMappings == nil {
-			return -1, fmt.Errorf("User namespaces enabled, but no uid mappings found.")
+			return -1, errNoUIDMap
 		}
 		id, found := c.hostIDFromMapping(containerId, c.UidMappings)
 		if !found {
-			return -1, fmt.Errorf("User namespaces enabled, but no user mapping found.")
+			return -1, errNoUserMap
 		}
 		return id, nil
 	}
@@ -30,11 +37,11 @@ func (c Config) HostRootUID() (int, error) {
 func (c Config) HostGID(containerId int) (int, error) {
 	if c.Namespaces.Contains(NEWUSER) {
 		if c.GidMappings == nil {
-			return -1, fmt.Errorf("User namespaces enabled, but no gid mappings found.")
+			return -1, errNoGIDMap
 		}
 		id, found := c.hostIDFromMapping(containerId, c.GidMappings)
 		if !found {
-			return -1, fmt.Errorf("User namespaces enabled, but no group mapping found.")
+			return -1, errNoGroupMap
 		}
 		return id, nil
 	}

vendor/github.com/opencontainers/runc/libcontainer/configs/configs_fuzzer.go

@@ -1,3 +1,4 @@
+//go:build gofuzz
 // +build gofuzz
 
 package configs

vendor/github.com/opencontainers/runc/libcontainer/configs/intelrdt.go

@@ -1,6 +1,9 @@
 package configs
 
 type IntelRdt struct {
+	// The identity for RDT Class of Service
+	ClosID string `json:"closID,omitempty"`
+
 	// The schema for L3 cache id and capacity bitmask (CBM)
 	// Format: "L3:<cache_id0>=<cbm0>;<cache_id1>=<cbm1>;..."
 	L3CacheSchema string `json:"l3_cache_schema,omitempty"`

vendor/github.com/opencontainers/runc/libcontainer/configs/mount.go

@@ -1,5 +1,7 @@
 package configs
 
+import "golang.org/x/sys/unix"
+
 const (
 	// EXT_COPYUP is a directive to copy up the contents of a directory when
 	// a tmpfs is mounted over it.
@@ -28,6 +30,9 @@ type Mount struct {
 	// Relabel source if set, "z" indicates shared, "Z" indicates unshared.
 	Relabel string `json:"relabel"`
 
+	// RecAttr represents mount properties to be applied recursively (AT_RECURSIVE), see mount_setattr(2).
+	RecAttr *unix.MountAttr `json:"rec_attr"`
+
 	// Extensions are additional flags that are specific to runc.
 	Extensions int `json:"extensions"`
 
@@ -37,3 +42,7 @@ type Mount struct {
 	// Optional Command to be run after Source is mounted.
 	PostmountCmds []Command `json:"postmount_cmds"`
 }
+
+func (m *Mount) IsBind() bool {
+	return m.Flags&unix.MS_BIND != 0
+}

vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_syscall.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package configs

vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_syscall_unsupported.go

@@ -1,3 +1,4 @@
+//go:build !linux && !windows
 // +build !linux,!windows
 
 package configs

vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_unsupported.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package configs

vendor/github.com/opencontainers/runc/libcontainer/configs/rdma.go

@@ -0,0 +1,9 @@
+package configs
+
+// LinuxRdma for Linux cgroup 'rdma' resource management (Linux 4.11)
+type LinuxRdma struct {
+	// Maximum number of HCA handles that can be opened. Default is "no limit".
+	HcaHandles *uint32 `json:"hca_handles,omitempty"`
+	// Maximum number of HCA objects that can be created. Default is "no limit".
+	HcaObjects *uint32 `json:"hca_objects,omitempty"`
+}

vendor/github.com/opencontainers/runc/libcontainer/devices/device_unix.go

@@ -1,10 +1,10 @@
+//go:build !windows
 // +build !windows
 
 package devices
 
 import (
 	"errors"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -16,8 +16,8 @@ var ErrNotADevice = errors.New("not a device node")
 
 // Testing dependencies
 var (
-	unixLstat     = unix.Lstat
+	unixLstat = unix.Lstat
-	ioutilReadDir = ioutil.ReadDir
+	osReadDir = os.ReadDir
 )
 
 func mkDev(d *Rule) (uint64, error) {
@@ -40,7 +40,7 @@ func DeviceFromPath(path, permissions string) (*Device, error) {
 	var (
 		devType   Type
 		mode      = stat.Mode
-		devNumber = uint64(stat.Rdev)
+		devNumber = uint64(stat.Rdev) //nolint:unconvert // Rdev is uint32 on e.g. MIPS.
 		major     = unix.Major(devNumber)
 		minor     = unix.Minor(devNumber)
 	)
@@ -76,7 +76,7 @@ func HostDevices() ([]*Device, error) {
 // GetDevices recursively traverses a directory specified by path
 // and returns all devices found there.
 func GetDevices(path string) ([]*Device, error) {
-	files, err := ioutilReadDir(path)
+	files, err := osReadDir(path)
 	if err != nil {
 		return nil, err
 	}
@@ -103,7 +103,7 @@ func GetDevices(path string) ([]*Device, error) {
 		}
 		device, err := DeviceFromPath(filepath.Join(path, f.Name()), "rwm")
 		if err != nil {
-			if err == ErrNotADevice {
+			if errors.Is(err, ErrNotADevice) {
 				continue
 			}
 			if os.IsNotExist(err) {

vendor/github.com/opencontainers/runc/libcontainer/user/lookup_unix.go

@@ -1,3 +1,4 @@
+//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 // +build darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package user

vendor/github.com/opencontainers/runc/libcontainer/user/user.go

@@ -120,7 +120,7 @@ func ParsePasswdFileFilter(path string, filter func(User) bool) ([]User, error)
 
 func ParsePasswdFilter(r io.Reader, filter func(User) bool) ([]User, error) {
 	if r == nil {
-		return nil, fmt.Errorf("nil source for passwd-formatted data")
+		return nil, errors.New("nil source for passwd-formatted data")
 	}
 
 	var (
@@ -178,7 +178,7 @@ func ParseGroupFileFilter(path string, filter func(Group) bool) ([]Group, error)
 
 func ParseGroupFilter(r io.Reader, filter func(Group) bool) ([]Group, error) {
 	if r == nil {
-		return nil, fmt.Errorf("nil source for group-formatted data")
+		return nil, errors.New("nil source for group-formatted data")
 	}
 	rd := bufio.NewReader(r)
 	out := []Group{}
@@ -339,7 +339,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
 		if userArg == "" {
 			userArg = strconv.Itoa(user.Uid)
 		}
-		return nil, fmt.Errorf("unable to find user %s: %v", userArg, err)
+		return nil, fmt.Errorf("unable to find user %s: %w", userArg, err)
 	}
 
 	var matchedUserName string
@@ -355,7 +355,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
 
 		if uidErr != nil {
 			// Not numeric.
-			return nil, fmt.Errorf("unable to find user %s: %v", userArg, ErrNoPasswdEntries)
+			return nil, fmt.Errorf("unable to find user %s: %w", userArg, ErrNoPasswdEntries)
 		}
 		user.Uid = uidArg
 
@@ -390,7 +390,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
 			return g.Name == groupArg
 		})
 		if err != nil && group != nil {
-			return nil, fmt.Errorf("unable to find groups for spec %v: %v", matchedUserName, err)
+			return nil, fmt.Errorf("unable to find groups for spec %v: %w", matchedUserName, err)
 		}
 
 		// Only start modifying user.Gid if it is in explicit form.
@@ -404,7 +404,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
 
 				if gidErr != nil {
 					// Not numeric.
-					return nil, fmt.Errorf("unable to find group %s: %v", groupArg, ErrNoGroupEntries)
+					return nil, fmt.Errorf("unable to find group %s: %w", groupArg, ErrNoGroupEntries)
 				}
 				user.Gid = gidArg
 
@@ -445,7 +445,7 @@ func GetAdditionalGroups(additionalGroups []string, group io.Reader) ([]int, err
 			return false
 		})
 		if err != nil {
-			return nil, fmt.Errorf("Unable to find additional groups %v: %v", additionalGroups, err)
+			return nil, fmt.Errorf("Unable to find additional groups %v: %w", additionalGroups, err)
 		}
 	}
 
@@ -468,7 +468,8 @@ func GetAdditionalGroups(additionalGroups []string, group io.Reader) ([]int, err
 		if !found {
 			gid, err := strconv.ParseInt(ag, 10, 64)
 			if err != nil {
-				return nil, fmt.Errorf("Unable to find group %s", ag)
+				// Not a numeric ID either.
+				return nil, fmt.Errorf("Unable to find group %s: %w", ag, ErrNoGroupEntries)
 			}
 			// Ensure gid is inside gid range.
 			if gid < minID || gid > maxID {
@@ -521,7 +522,7 @@ func ParseSubIDFileFilter(path string, filter func(SubID) bool) ([]SubID, error)
 
 func ParseSubIDFilter(r io.Reader, filter func(SubID) bool) ([]SubID, error) {
 	if r == nil {
-		return nil, fmt.Errorf("nil source for subid-formatted data")
+		return nil, errors.New("nil source for subid-formatted data")
 	}
 
 	var (
@@ -574,7 +575,7 @@ func ParseIDMapFileFilter(path string, filter func(IDMap) bool) ([]IDMap, error)
 
 func ParseIDMapFilter(r io.Reader, filter func(IDMap) bool) ([]IDMap, error) {
 	if r == nil {
-		return nil, fmt.Errorf("nil source for idmap-formatted data")
+		return nil, errors.New("nil source for idmap-formatted data")
 	}
 
 	var (

vendor/github.com/opencontainers/runc/libcontainer/user/user_fuzzer.go

@@ -1,3 +1,4 @@
+//go:build gofuzz
 // +build gofuzz
 
 package user

vendor/github.com/opencontainers/runc/libcontainer/userns/userns_fuzzer.go

@@ -1,3 +1,4 @@
+//go:build gofuzz
 // +build gofuzz
 
 package userns

vendor/github.com/opencontainers/runc/libcontainer/userns/userns_unsupported.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package userns

vendor/github.com/opencontainers/runc/libcontainer/utils/cmsg.go

@@ -1,5 +1,3 @@
-// +build linux
-
 package utils
 
 /*
@@ -88,6 +86,11 @@ func SendFd(socket *os.File, name string, fd uintptr) error {
 	if len(name) >= MaxNameLen {
 		return fmt.Errorf("sendfd: filename too long: %s", name)
 	}
-	oob := unix.UnixRights(int(fd))
+	return SendFds(socket, []byte(name), int(fd))
-	return unix.Sendmsg(int(socket.Fd()), []byte(name), oob, nil, 0)
+}
+
+// SendFds sends a list of files descriptor and msg over the given AF_UNIX socket.
+func SendFds(socket *os.File, msg []byte, fds ...int) error {
+	oob := unix.UnixRights(fds...)
+	return unix.Sendmsg(int(socket.Fd()), msg, oob, nil, 0)
 }

vendor/github.com/opencontainers/runc/libcontainer/utils/utils.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"unsafe"
 
-	"github.com/cyphar/filepath-securejoin"
+	securejoin "github.com/cyphar/filepath-securejoin"
 	"golang.org/x/sys/unix"
 )
 
@@ -33,16 +33,6 @@ func init() {
 	}
 }
 
-// ResolveRootfs ensures that the current working directory is
-// not a symlink and returns the absolute path to the rootfs
-func ResolveRootfs(uncleanRootfs string) (string, error) {
-	rootfs, err := filepath.Abs(uncleanRootfs)
-	if err != nil {
-		return "", err
-	}
-	return filepath.EvalSymlinks(rootfs)
-}
-
 // ExitStatus returns the correct exit status for a process based on if it
 // was signaled or exited cleanly
 func ExitStatus(status unix.WaitStatus) int {
@@ -120,7 +110,7 @@ func WithProcfd(root, unsafePath string, fn func(procfd string) error) error {
 	unsafePath = stripRoot(root, unsafePath)
 	path, err := securejoin.SecureJoin(root, unsafePath)
 	if err != nil {
-		return fmt.Errorf("resolving path inside rootfs failed: %v", err)
+		return fmt.Errorf("resolving path inside rootfs failed: %w", err)
 	}
 
 	// Open the target path.

vendor/github.com/opencontainers/runc/libcontainer/utils/utils_unix.go

@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows
 
 package utils
@@ -14,7 +15,7 @@ import (
 func EnsureProcHandle(fh *os.File) error {
 	var buf unix.Statfs_t
 	if err := unix.Fstatfs(int(fh.Fd()), &buf); err != nil {
-		return fmt.Errorf("ensure %s is on procfs: %v", fh.Name(), err)
+		return fmt.Errorf("ensure %s is on procfs: %w", fh.Name(), err)
 	}
 	if buf.Type != unix.PROC_SUPER_MAGIC {
 		return fmt.Errorf("%s is not on procfs", fh.Name())
@@ -52,7 +53,7 @@ func CloseExecFrom(minFd int) error {
 		// Intentionally ignore errors from unix.CloseOnExec -- the cases where
 		// this might fail are basically file descriptors that have already
 		// been closed (including and especially the one that was created when
-		// ioutil.ReadDir did the "opendir" syscall).
+		// os.ReadDir did the "opendir" syscall).
 		unix.CloseOnExec(fd)
 	}
 	return nil

vendor/github.com/seccomp/libseccomp-golang/.travis.yml

@@ -19,19 +19,39 @@ os:
 
 language: go
 
+jobs:
+  include:
+    - name: "last libseccomp 2.5.0"
+      env:
+      - SECCOMP_VER=2.5.0
+      - SECCOMP_SHA256SUM=1ffa7038d2720ad191919816db3479295a4bcca1ec14e02f672539f4983014f3
+    - name: "compat libseccomp 2.4.4"
+      env:
+      - SECCOMP_VER=2.4.4
+      - SECCOMP_SHA256SUM=4e79738d1ef3c9b7ca9769f1f8b8d84fc17143c2c1c432e53b9c64787e0ff3eb
+    - name: "compat libseccomp 2.2.1"
+      env:
+      - SECCOMP_VER=2.2.1
+      - SECCOMP_SHA256SUM=0ba1789f54786c644af54cdffc9fd0dd0a8bb2b2ee153933f658855d2851a740
+
 addons:
   apt:
     packages:
       - build-essential
-      # TODO: use the main libseccomp git repo instead of a distro package
+      - astyle
-      - libseccomp2
+      - golint
-      - libseccomp-dev
+      - gperf
 
 install:
   - go get -u golang.org/x/lint/golint
 
 # run all of the tests independently, fail if any of the tests error
 script:
+  - wget https://github.com/seccomp/libseccomp/releases/download/v$SECCOMP_VER/libseccomp-$SECCOMP_VER.tar.gz
+  - echo $SECCOMP_SHA256SUM libseccomp-$SECCOMP_VER.tar.gz | sha256sum -c
+  - tar xf libseccomp-$SECCOMP_VER.tar.gz
+  - pushd libseccomp-$SECCOMP_VER && ./configure --prefix=/opt/libseccomp-$SECCOMP_VER && make && sudo make install && popd
   - make check-syntax
   - make lint
-  - make check
+  - PKG_CONFIG_PATH=/opt/libseccomp-$SECCOMP_VER/lib/pkgconfig LD_LIBRARY_PATH=/opt/libseccomp-$SECCOMP_VER/lib make vet
+  - PKG_CONFIG_PATH=/opt/libseccomp-$SECCOMP_VER/lib/pkgconfig LD_LIBRARY_PATH=/opt/libseccomp-$SECCOMP_VER/lib make test

vendor/github.com/seccomp/libseccomp-golang/Makefile

@@ -18,8 +18,14 @@ fix-syntax:
 vet:
 	go vet -v
 
+# Previous bugs have made the tests freeze until the timeout. Golang default
+# timeout for tests is 10 minutes, which is too long, considering current tests
+# can be executed in less than 1 second. Reduce the timeout, so problems can
+# be noticed earlier in the CI.
+TEST_TIMEOUT=10s
+
 test:
-	go test -v
+	go test -v -timeout $(TEST_TIMEOUT)
 
 lint:
 	@$(if $(shell which golint),true,$(error "install golint and include it in your PATH"))

vendor/github.com/seccomp/libseccomp-golang/README.md

@@ -2,7 +2,7 @@
 ===============================================================================
 https://github.com/seccomp/libseccomp-golang
 
-[![Build Status](https://img.shields.io/travis/seccomp/libseccomp-golang/master.svg)](https://travis-ci.org/seccomp/libseccomp-golang)
+[![Build Status](https://img.shields.io/travis/seccomp/libseccomp-golang/main.svg)](https://travis-ci.org/seccomp/libseccomp-golang)
 
 The libseccomp library provides an easy to use, platform independent, interface
 to the Linux Kernel's syscall filtering mechanism.  The libseccomp API is

vendor/github.com/seccomp/libseccomp-golang/seccomp.go

@@ -20,6 +20,13 @@ import (
 
 // C wrapping code
 
+// To compile libseccomp-golang against a specific version of libseccomp:
+// cd ../libseccomp && mkdir -p prefix
+// ./configure --prefix=$PWD/prefix && make && make install
+// cd ../libseccomp-golang
+// PKG_CONFIG_PATH=$PWD/../libseccomp/prefix/lib/pkgconfig/ make
+// LD_PRELOAD=$PWD/../libseccomp/prefix/lib/libseccomp.so.2.5.0 PKG_CONFIG_PATH=$PWD/../libseccomp/prefix/lib/pkgconfig/ make test
+
 // #cgo pkg-config: libseccomp
 // #include <stdlib.h>
 // #include <seccomp.h>
@@ -34,19 +41,25 @@ type VersionError struct {
 	minimum string
 }
 
+func init() {
+	// This forces the cgo libseccomp to initialize its internal API support state,
+	// which is necessary on older versions of libseccomp in order to work
+	// correctly.
+	GetAPI()
+}
+
 func (e VersionError) Error() string {
-	format := "Libseccomp version too low: "
+	messageStr := ""
 	if e.message != "" {
-		format += e.message + ": "
+		messageStr = e.message + ": "
 	}
-	format += "minimum supported is "
+	minimumStr := ""
 	if e.minimum != "" {
-		format += e.minimum + ": "
+		minimumStr = e.minimum
 	} else {
-		format += "2.2.0: "
+		minimumStr = "2.2.0"
 	}
-	format += "detected %d.%d.%d"
+	return fmt.Sprintf("Libseccomp version too low: %sminimum supported is %s: detected %d.%d.%d", messageStr, minimumStr, verMajor, verMinor, verMicro)
-	return fmt.Sprintf(format, verMajor, verMinor, verMicro)
 }
 
 // ScmpArch represents a CPU architecture. Seccomp can restrict syscalls on a
@@ -69,9 +82,61 @@ type ScmpCondition struct {
 	Operand2 uint64        `json:"operand_two,omitempty"`
 }
 
-// ScmpSyscall represents a Linux System Call
+// Seccomp userspace notification structures associated with filters that use the ActNotify action.
+
+// ScmpSyscall identifies a Linux System Call by its number.
 type ScmpSyscall int32
 
+// ScmpFd represents a file-descriptor used for seccomp userspace notifications.
+type ScmpFd int32
+
+// ScmpNotifData describes the system call context that triggered a notification.
+//
+// Syscall:      the syscall number
+// Arch:         the filter architecture
+// InstrPointer: address of the instruction that triggered a notification
+// Args:         arguments (up to 6) for the syscall
+//
+type ScmpNotifData struct {
+	Syscall      ScmpSyscall `json:"syscall,omitempty"`
+	Arch         ScmpArch    `json:"arch,omitempty"`
+	InstrPointer uint64      `json:"instr_pointer,omitempty"`
+	Args         []uint64    `json:"args,omitempty"`
+}
+
+// ScmpNotifReq represents a seccomp userspace notification. See NotifReceive() for
+// info on how to pull such a notification.
+//
+// ID:    notification ID
+// Pid:   process that triggered the notification event
+// Flags: filter flags (see seccomp(2))
+// Data:  system call context that triggered the notification
+//
+type ScmpNotifReq struct {
+	ID    uint64        `json:"id,omitempty"`
+	Pid   uint32        `json:"pid,omitempty"`
+	Flags uint32        `json:"flags,omitempty"`
+	Data  ScmpNotifData `json:"data,omitempty"`
+}
+
+// ScmpNotifResp represents a seccomp userspace notification response. See NotifRespond()
+// for info on how to push such a response.
+//
+// ID:    notification ID (must match the corresponding ScmpNotifReq ID)
+// Error: must be 0 if no error occurred, or an error constant from package
+//        syscall (e.g., syscall.EPERM, etc). In the latter case, it's used
+//        as an error return from the syscall that created the notification.
+// Val:   return value for the syscall that created the notification. Only
+//        relevant if Error is 0.
+// Flags: userspace notification response flag (e.g., NotifRespFlagContinue)
+//
+type ScmpNotifResp struct {
+	ID    uint64 `json:"id,omitempty"`
+	Error int32  `json:"error,omitempty"`
+	Val   uint64 `json:"val,omitempty"`
+	Flags uint32 `json:"flags,omitempty"`
+}
+
 // Exported Constants
 
 const (
@@ -117,6 +182,10 @@ const (
 	ArchS390 ScmpArch = iota
 	// ArchS390X represents 64-bit System z/390 syscalls
 	ArchS390X ScmpArch = iota
+	// ArchPARISC represents 32-bit PA-RISC
+	ArchPARISC ScmpArch = iota
+	// ArchPARISC64 represents 64-bit PA-RISC
+	ArchPARISC64 ScmpArch = iota
 )
 
 const (
@@ -130,6 +199,9 @@ const (
 	ActKill ScmpAction = iota
 	// ActTrap throws SIGSYS
 	ActTrap ScmpAction = iota
+	// ActNotify triggers a userspace notification. This action is only usable when
+	// libseccomp API level 6 or higher is supported.
+	ActNotify ScmpAction = iota
 	// ActErrno causes the syscall to return a negative error code. This
 	// code can be set with the SetReturnCode method
 	ActErrno ScmpAction = iota
@@ -181,6 +253,21 @@ const (
 	CompareMaskedEqual ScmpCompareOp = iota
 )
 
+var (
+	// ErrSyscallDoesNotExist represents an error condition where
+	// libseccomp is unable to resolve the syscall
+	ErrSyscallDoesNotExist = fmt.Errorf("could not resolve syscall name")
+)
+
+const (
+	// Userspace notification response flags
+
+	// NotifRespFlagContinue tells the kernel to continue executing the system
+	// call that triggered the notification. Must only be used when the notication
+	// response's error is 0.
+	NotifRespFlagContinue uint32 = 1
+)
+
 // Helpers for types
 
 // GetArchFromString returns an ScmpArch constant from a string representing an
@@ -223,6 +310,10 @@ func GetArchFromString(arch string) (ScmpArch, error) {
 		return ArchS390, nil
 	case "s390x":
 		return ArchS390X, nil
+	case "parisc":
+		return ArchPARISC, nil
+	case "parisc64":
+		return ArchPARISC64, nil
 	default:
 		return ArchInvalid, fmt.Errorf("cannot convert unrecognized string %q", arch)
 	}
@@ -263,6 +354,10 @@ func (a ScmpArch) String() string {
 		return "s390"
 	case ArchS390X:
 		return "s390x"
+	case ArchPARISC:
+		return "parisc"
+	case ArchPARISC64:
+		return "parisc64"
 	case ArchNative:
 		return "native"
 	case ArchInvalid:
@@ -310,6 +405,8 @@ func (a ScmpAction) String() string {
 	case ActTrace:
 		return fmt.Sprintf("Action: Notify tracing processes with code %d",
 			(a >> 16))
+	case ActNotify:
+		return "Action: Notify userspace"
 	case ActLog:
 		return "Action: Log system call"
 	case ActAllow:
@@ -349,7 +446,7 @@ func GetLibraryVersion() (major, minor, micro uint) {
 // Returns a positive int containing the API level, or 0 with an error if the
 // API level could not be detected due to the library being older than v2.4.0.
 // See the seccomp_api_get(3) man page for details on available API levels:
-// https://github.com/seccomp/libseccomp/blob/master/doc/man/man3/seccomp_api_get.3
+// https://github.com/seccomp/libseccomp/blob/main/doc/man/man3/seccomp_api_get.3
 func GetAPI() (uint, error) {
 	return getAPI()
 }
@@ -359,7 +456,7 @@ func GetAPI() (uint, error) {
 // Returns an error if the API level could not be set. An error is always
 // returned if the library is older than v2.4.0
 // See the seccomp_api_get(3) man page for details on available API levels:
-// https://github.com/seccomp/libseccomp/blob/master/doc/man/man3/seccomp_api_get.3
+// https://github.com/seccomp/libseccomp/blob/main/doc/man/man3/seccomp_api_get.3
 func SetAPI(api uint) error {
 	return setAPI(api)
 }
@@ -386,7 +483,7 @@ func (s ScmpSyscall) GetNameByArch(arch ScmpArch) (string, error) {
 
 	cString := C.seccomp_syscall_resolve_num_arch(arch.toNative(), C.int(s))
 	if cString == nil {
-		return "", fmt.Errorf("could not resolve syscall name for %#x", int32(s))
+		return "", ErrSyscallDoesNotExist
 	}
 	defer C.free(unsafe.Pointer(cString))
 
@@ -409,7 +506,7 @@ func GetSyscallFromName(name string) (ScmpSyscall, error) {
 
 	result := C.seccomp_syscall_resolve_name(cString)
 	if result == scmpError {
-		return 0, fmt.Errorf("could not resolve name to syscall: %q", name)
+		return 0, ErrSyscallDoesNotExist
 	}
 
 	return ScmpSyscall(result), nil
@@ -433,7 +530,7 @@ func GetSyscallFromNameByArch(name string, arch ScmpArch) (ScmpSyscall, error) {
 
 	result := C.seccomp_syscall_resolve_name_arch(arch.toNative(), cString)
 	if result == scmpError {
-		return 0, fmt.Errorf("could not resolve name to syscall: %q on %v", name, arch)
+		return 0, ErrSyscallDoesNotExist
 	}
 
 	return ScmpSyscall(result), nil
@@ -506,11 +603,10 @@ type ScmpFilter struct {
 	lock      sync.Mutex
 }
 
-// NewFilter creates and returns a new filter context.
+// NewFilter creates and returns a new filter context.  Accepts a default action to be
-// Accepts a default action to be taken for syscalls which match no rules in
+// taken for syscalls which match no rules in the filter.
-// the filter.
+// Returns a reference to a valid filter context, or nil and an error
-// Returns a reference to a valid filter context, or nil and an error if the
+// if the filter context could not be created or an invalid default action was given.
-// filter context could not be created or an invalid default action was given.
 func NewFilter(defaultAction ScmpAction) (*ScmpFilter, error) {
 	if err := ensureSupportedVersion(); err != nil {
 		return nil, err
@@ -530,8 +626,8 @@ func NewFilter(defaultAction ScmpAction) (*ScmpFilter, error) {
 	filter.valid = true
 	runtime.SetFinalizer(filter, filterFinalizer)
 
-	// Enable TSync so all goroutines will receive the same rules
+	// Enable TSync so all goroutines will receive the same rules.
-	// If the kernel does not support TSYNC, allow us to continue without error
+	// If the kernel does not support TSYNC, allow us to continue without error.
 	if err := filter.setFilterAttr(filterAttrTsync, 0x1); err != nil && err != syscall.ENOTSUP {
 		filter.Release()
 		return nil, fmt.Errorf("could not create filter - error setting tsync bit: %v", err)
@@ -778,8 +874,9 @@ func (f *ScmpFilter) GetNoNewPrivsBit() (bool, error) {
 func (f *ScmpFilter) GetLogBit() (bool, error) {
 	log, err := f.getFilterAttr(filterAttrLog)
 	if err != nil {
-		api, apiErr := getAPI()
+		// Ignore error, if not supported returns apiLevel == 0
-		if (apiErr != nil && api == 0) || (apiErr == nil && api < 3) {
+		apiLevel, _ := GetAPI()
+		if apiLevel < 3 {
 			return false, fmt.Errorf("getting the log bit is only supported in libseccomp 2.4.0 and newer with API level 3 or higher")
 		}
 
@@ -793,6 +890,30 @@ func (f *ScmpFilter) GetLogBit() (bool, error) {
 	return true, nil
 }
 
+// GetSSB returns the current state the SSB bit will be set to on the filter
+// being loaded, or an error if an issue was encountered retrieving the value.
+// The SSB bit tells the kernel that a seccomp user is not interested in enabling
+// Speculative Store Bypass mitigation.
+// The SSB bit is only usable when libseccomp API level 4 or higher is
+// supported.
+func (f *ScmpFilter) GetSSB() (bool, error) {
+	ssb, err := f.getFilterAttr(filterAttrSSB)
+	if err != nil {
+		api, apiErr := getAPI()
+		if (apiErr != nil && api == 0) || (apiErr == nil && api < 4) {
+			return false, fmt.Errorf("getting the SSB flag is only supported in libseccomp 2.5.0 and newer with API level 4 or higher")
+		}
+
+		return false, err
+	}
+
+	if ssb == 0 {
+		return false, nil
+	}
+
+	return true, nil
+}
+
 // SetBadArchAction sets the default action taken on a syscall for an
 // architecture not in the filter, or an error if an issue was encountered
 // setting the value.
@@ -832,8 +953,9 @@ func (f *ScmpFilter) SetLogBit(state bool) error {
 
 	err := f.setFilterAttr(filterAttrLog, toSet)
 	if err != nil {
-		api, apiErr := getAPI()
+		// Ignore error, if not supported returns apiLevel == 0
-		if (apiErr != nil && api == 0) || (apiErr == nil && api < 3) {
+		apiLevel, _ := GetAPI()
+		if apiLevel < 3 {
 			return fmt.Errorf("setting the log bit is only supported in libseccomp 2.4.0 and newer with API level 3 or higher")
 		}
 	}
@@ -841,6 +963,28 @@ func (f *ScmpFilter) SetLogBit(state bool) error {
 	return err
 }
 
+// SetSSB sets the state of the SSB bit, which will be applied on filter
+// load, or an error if an issue was encountered setting the value.
+// The SSB bit is only usable when libseccomp API level 4 or higher is
+// supported.
+func (f *ScmpFilter) SetSSB(state bool) error {
+	var toSet C.uint32_t = 0x0
+
+	if state {
+		toSet = 0x1
+	}
+
+	err := f.setFilterAttr(filterAttrSSB, toSet)
+	if err != nil {
+		api, apiErr := getAPI()
+		if (apiErr != nil && api == 0) || (apiErr == nil && api < 4) {
+			return fmt.Errorf("setting the SSB flag is only supported in libseccomp 2.5.0 and newer with API level 4 or higher")
+		}
+	}
+
+	return err
+}
+
 // SetSyscallPriority sets a syscall's priority.
 // This provides a hint to the filter generator in libseccomp about the
 // importance of this syscall. High-priority syscalls are placed
@@ -947,3 +1091,36 @@ func (f *ScmpFilter) ExportBPF(file *os.File) error {
 
 	return nil
 }
+
+// Userspace Notification API
+
+// GetNotifFd returns the userspace notification file descriptor associated with the given
+// filter context. Such a file descriptor is only valid after the filter has been loaded
+// and only when the filter uses the ActNotify action. The file descriptor can be used to
+// retrieve and respond to notifications associated with the filter (see NotifReceive(),
+// NotifRespond(), and NotifIDValid()).
+func (f *ScmpFilter) GetNotifFd() (ScmpFd, error) {
+	return f.getNotifFd()
+}
+
+// NotifReceive retrieves a seccomp userspace notification from a filter whose ActNotify
+// action has triggered. The caller is expected to process the notification and return a
+// response via NotifRespond(). Each invocation of this function returns one
+// notification. As multiple notifications may be pending at any time, this function is
+// normally called within a polling loop.
+func NotifReceive(fd ScmpFd) (*ScmpNotifReq, error) {
+	return notifReceive(fd)
+}
+
+// NotifRespond responds to a notification retrieved via NotifReceive(). The response Id
+// must match that of the corresponding notification retrieved via NotifReceive().
+func NotifRespond(fd ScmpFd, scmpResp *ScmpNotifResp) error {
+	return notifRespond(fd, scmpResp)
+}
+
+// NotifIDValid checks if a notification is still valid. An return value of nil means the
+// notification is still valid. Otherwise the notification is not valid. This can be used
+// to mitigate time-of-check-time-of-use (TOCTOU) attacks as described in seccomp_notify_id_valid(2).
+func NotifIDValid(fd ScmpFd, id uint64) error {
+	return notifIDValid(fd, id)
+}

vendor/github.com/seccomp/libseccomp-golang/seccomp_internal.go

@@ -14,6 +14,13 @@ import (
 // Get the seccomp header in scope
 // Need stdlib.h for free() on cstrings
 
+// To compile libseccomp-golang against a specific version of libseccomp:
+// cd ../libseccomp && mkdir -p prefix
+// ./configure --prefix=$PWD/prefix && make && make install
+// cd ../libseccomp-golang
+// PKG_CONFIG_PATH=$PWD/../libseccomp/prefix/lib/pkgconfig/ make
+// LD_PRELOAD=$PWD/../libseccomp/prefix/lib/libseccomp.so.2.5.0 PKG_CONFIG_PATH=$PWD/../libseccomp/prefix/lib/pkgconfig/ make test
+
 // #cgo pkg-config: libseccomp
 /*
 #include <errno.h>
@@ -50,6 +57,14 @@ const uint32_t C_ARCH_BAD = ARCH_BAD;
 #define SCMP_ARCH_S390X ARCH_BAD
 #endif
 
+#ifndef SCMP_ARCH_PARISC
+#define SCMP_ARCH_PARISC ARCH_BAD
+#endif
+
+#ifndef SCMP_ARCH_PARISC64
+#define SCMP_ARCH_PARISC64 ARCH_BAD
+#endif
+
 const uint32_t C_ARCH_NATIVE       = SCMP_ARCH_NATIVE;
 const uint32_t C_ARCH_X86          = SCMP_ARCH_X86;
 const uint32_t C_ARCH_X86_64       = SCMP_ARCH_X86_64;
@@ -67,6 +82,8 @@ const uint32_t C_ARCH_PPC64        = SCMP_ARCH_PPC64;
 const uint32_t C_ARCH_PPC64LE      = SCMP_ARCH_PPC64LE;
 const uint32_t C_ARCH_S390         = SCMP_ARCH_S390;
 const uint32_t C_ARCH_S390X        = SCMP_ARCH_S390X;
+const uint32_t C_ARCH_PARISC       = SCMP_ARCH_PARISC;
+const uint32_t C_ARCH_PARISC64     = SCMP_ARCH_PARISC64;
 
 #ifndef SCMP_ACT_LOG
 #define SCMP_ACT_LOG 0x7ffc0000U
@@ -80,6 +97,10 @@ const uint32_t C_ARCH_S390X        = SCMP_ARCH_S390X;
 #define SCMP_ACT_KILL_THREAD	0x00000000U
 #endif
 
+#ifndef SCMP_ACT_NOTIFY
+#define SCMP_ACT_NOTIFY 0x7fc00000U
+#endif
+
 const uint32_t C_ACT_KILL          = SCMP_ACT_KILL;
 const uint32_t C_ACT_KILL_PROCESS  = SCMP_ACT_KILL_PROCESS;
 const uint32_t C_ACT_KILL_THREAD   = SCMP_ACT_KILL_THREAD;
@@ -88,6 +109,7 @@ const uint32_t C_ACT_ERRNO         = SCMP_ACT_ERRNO(0);
 const uint32_t C_ACT_TRACE         = SCMP_ACT_TRACE(0);
 const uint32_t C_ACT_LOG           = SCMP_ACT_LOG;
 const uint32_t C_ACT_ALLOW         = SCMP_ACT_ALLOW;
+const uint32_t C_ACT_NOTIFY        = SCMP_ACT_NOTIFY;
 
 // The libseccomp SCMP_FLTATR_CTL_LOG member of the scmp_filter_attr enum was
 // added in v2.4.0
@@ -95,12 +117,16 @@ const uint32_t C_ACT_ALLOW         = SCMP_ACT_ALLOW;
     (SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR < 4)
 #define SCMP_FLTATR_CTL_LOG _SCMP_FLTATR_MIN
 #endif
+#if SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR < 5
+#define SCMP_FLTATR_CTL_SSB _SCMP_FLTATR_MIN
+#endif
 
 const uint32_t C_ATTRIBUTE_DEFAULT = (uint32_t)SCMP_FLTATR_ACT_DEFAULT;
 const uint32_t C_ATTRIBUTE_BADARCH = (uint32_t)SCMP_FLTATR_ACT_BADARCH;
 const uint32_t C_ATTRIBUTE_NNP     = (uint32_t)SCMP_FLTATR_CTL_NNP;
 const uint32_t C_ATTRIBUTE_TSYNC   = (uint32_t)SCMP_FLTATR_CTL_TSYNC;
 const uint32_t C_ATTRIBUTE_LOG     = (uint32_t)SCMP_FLTATR_CTL_LOG;
+const uint32_t C_ATTRIBUTE_SSB     = (uint32_t)SCMP_FLTATR_CTL_SSB;
 
 const int      C_CMP_NE            = (int)SCMP_CMP_NE;
 const int      C_CMP_LT            = (int)SCMP_CMP_LT;
@@ -189,6 +215,51 @@ void add_struct_arg_cmp(
 
         return;
 }
+
+// The seccomp notify API functions were added in v2.5.0
+#if (SCMP_VER_MAJOR < 2) || \
+    (SCMP_VER_MAJOR == 2 && SCMP_VER_MINOR < 5)
+
+struct seccomp_data {
+	int nr;
+	__u32 arch;
+	__u64 instruction_pointer;
+	__u64 args[6];
+};
+
+struct seccomp_notif {
+	__u64 id;
+	__u32 pid;
+	__u32 flags;
+	struct seccomp_data data;
+};
+
+struct seccomp_notif_resp {
+	__u64 id;
+	__s64 val;
+	__s32 error;
+	__u32 flags;
+};
+
+int seccomp_notify_alloc(struct seccomp_notif **req, struct seccomp_notif_resp **resp) {
+	return -EOPNOTSUPP;
+}
+int seccomp_notify_fd(const scmp_filter_ctx ctx) {
+	return -EOPNOTSUPP;
+}
+void seccomp_notify_free(struct seccomp_notif *req, struct seccomp_notif_resp *resp) {
+}
+int seccomp_notify_id_valid(int fd, uint64_t id) {
+	return -EOPNOTSUPP;
+}
+int seccomp_notify_receive(int fd, struct seccomp_notif *req) {
+	return -EOPNOTSUPP;
+}
+int seccomp_notify_respond(int fd, struct seccomp_notif_resp *resp) {
+	return -EOPNOTSUPP;
+}
+
+#endif
 */
 import "C"
 
@@ -203,6 +274,7 @@ const (
 	filterAttrNNP        scmpFilterAttr = iota
 	filterAttrTsync      scmpFilterAttr = iota
 	filterAttrLog        scmpFilterAttr = iota
+	filterAttrSSB        scmpFilterAttr = iota
 )
 
 const (
@@ -210,7 +282,7 @@ const (
 	scmpError C.int = -1
 	// Comparison boundaries to check for architecture validity
 	archStart ScmpArch = ArchNative
-	archEnd   ScmpArch = ArchS390X
+	archEnd   ScmpArch = ArchPARISC64
 	// Comparison boundaries to check for action validity
 	actionStart ScmpAction = ActKill
 	actionEnd   ScmpAction = ActKillProcess
@@ -460,6 +532,10 @@ func archFromNative(a C.uint32_t) (ScmpArch, error) {
 		return ArchS390, nil
 	case C.C_ARCH_S390X:
 		return ArchS390X, nil
+	case C.C_ARCH_PARISC:
+		return ArchPARISC, nil
+	case C.C_ARCH_PARISC64:
+		return ArchPARISC64, nil
 	default:
 		return 0x0, fmt.Errorf("unrecognized architecture %#x", uint32(a))
 	}
@@ -500,6 +576,10 @@ func (a ScmpArch) toNative() C.uint32_t {
 		return C.C_ARCH_S390
 	case ArchS390X:
 		return C.C_ARCH_S390X
+	case ArchPARISC:
+		return C.C_ARCH_PARISC
+	case ArchPARISC64:
+		return C.C_ARCH_PARISC64
 	case ArchNative:
 		return C.C_ARCH_NATIVE
 	default:
@@ -548,6 +628,8 @@ func actionFromNative(a C.uint32_t) (ScmpAction, error) {
 		return ActLog, nil
 	case C.C_ACT_ALLOW:
 		return ActAllow, nil
+	case C.C_ACT_NOTIFY:
+		return ActNotify, nil
 	default:
 		return 0x0, fmt.Errorf("unrecognized action %#x", uint32(a))
 	}
@@ -572,6 +654,8 @@ func (a ScmpAction) toNative() C.uint32_t {
 		return C.C_ACT_LOG
 	case ActAllow:
 		return C.C_ACT_ALLOW
+	case ActNotify:
+		return C.C_ACT_NOTIFY
 	default:
 		return 0x0
 	}
@@ -590,7 +674,181 @@ func (a scmpFilterAttr) toNative() uint32 {
 		return uint32(C.C_ATTRIBUTE_TSYNC)
 	case filterAttrLog:
 		return uint32(C.C_ATTRIBUTE_LOG)
+	case filterAttrSSB:
+		return uint32(C.C_ATTRIBUTE_SSB)
 	default:
 		return 0x0
 	}
 }
+
+func (a ScmpSyscall) toNative() C.uint32_t {
+	return C.uint32_t(a)
+}
+
+func syscallFromNative(a C.int) ScmpSyscall {
+	return ScmpSyscall(a)
+}
+
+func notifReqFromNative(req *C.struct_seccomp_notif) (*ScmpNotifReq, error) {
+	scmpArgs := make([]uint64, 6)
+	for i := 0; i < len(scmpArgs); i++ {
+		scmpArgs[i] = uint64(req.data.args[i])
+	}
+
+	arch, err := archFromNative(req.data.arch)
+	if err != nil {
+		return nil, err
+	}
+
+	scmpData := ScmpNotifData{
+		Syscall:      syscallFromNative(req.data.nr),
+		Arch:         arch,
+		InstrPointer: uint64(req.data.instruction_pointer),
+		Args:         scmpArgs,
+	}
+
+	scmpReq := &ScmpNotifReq{
+		ID:    uint64(req.id),
+		Pid:   uint32(req.pid),
+		Flags: uint32(req.flags),
+		Data:  scmpData,
+	}
+
+	return scmpReq, nil
+}
+
+func (scmpResp *ScmpNotifResp) toNative(resp *C.struct_seccomp_notif_resp) {
+	resp.id = C.__u64(scmpResp.ID)
+	resp.val = C.__s64(scmpResp.Val)
+	resp.error = (C.__s32(scmpResp.Error) * -1) // kernel requires a negated value
+	resp.flags = C.__u32(scmpResp.Flags)
+}
+
+// Userspace Notification API
+// Calls to C.seccomp_notify* hidden from seccomp.go
+
+func (f *ScmpFilter) getNotifFd() (ScmpFd, error) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	if !f.valid {
+		return -1, errBadFilter
+	}
+
+	// Ignore error, if not supported returns apiLevel == 0
+	apiLevel, _ := GetAPI()
+	if apiLevel < 6 {
+		return -1, fmt.Errorf("seccomp notification requires API level >= 6; current level = %d", apiLevel)
+	}
+
+	fd := C.seccomp_notify_fd(f.filterCtx)
+
+	return ScmpFd(fd), nil
+}
+
+func notifReceive(fd ScmpFd) (*ScmpNotifReq, error) {
+	var req *C.struct_seccomp_notif
+	var resp *C.struct_seccomp_notif_resp
+
+	// Ignore error, if not supported returns apiLevel == 0
+	apiLevel, _ := GetAPI()
+	if apiLevel < 6 {
+		return nil, fmt.Errorf("seccomp notification requires API level >= 6; current level = %d", apiLevel)
+	}
+
+	// we only use the request here; the response is unused
+	if retCode := C.seccomp_notify_alloc(&req, &resp); retCode != 0 {
+		return nil, errRc(retCode)
+	}
+
+	defer func() {
+		C.seccomp_notify_free(req, resp)
+	}()
+
+	for {
+		retCode, errno := C.seccomp_notify_receive(C.int(fd), req)
+		if retCode == 0 {
+			break
+		}
+
+		if errno == syscall.EINTR {
+			continue
+		}
+
+		if errno == syscall.ENOENT {
+			return nil, errno
+		}
+
+		return nil, errRc(retCode)
+	}
+
+	return notifReqFromNative(req)
+}
+
+func notifRespond(fd ScmpFd, scmpResp *ScmpNotifResp) error {
+	var req *C.struct_seccomp_notif
+	var resp *C.struct_seccomp_notif_resp
+
+	// Ignore error, if not supported returns apiLevel == 0
+	apiLevel, _ := GetAPI()
+	if apiLevel < 6 {
+		return fmt.Errorf("seccomp notification requires API level >= 6; current level = %d", apiLevel)
+	}
+
+	// we only use the reponse here; the request is discarded
+	if retCode := C.seccomp_notify_alloc(&req, &resp); retCode != 0 {
+		return errRc(retCode)
+	}
+
+	defer func() {
+		C.seccomp_notify_free(req, resp)
+	}()
+
+	scmpResp.toNative(resp)
+
+	for {
+		retCode, errno := C.seccomp_notify_respond(C.int(fd), resp)
+		if retCode == 0 {
+			break
+		}
+
+		if errno == syscall.EINTR {
+			continue
+		}
+
+		if errno == syscall.ENOENT {
+			return errno
+		}
+
+		return errRc(retCode)
+	}
+
+	return nil
+}
+
+func notifIDValid(fd ScmpFd, id uint64) error {
+	// Ignore error, if not supported returns apiLevel == 0
+	apiLevel, _ := GetAPI()
+	if apiLevel < 6 {
+		return fmt.Errorf("seccomp notification requires API level >= 6; current level = %d", apiLevel)
+	}
+
+	for {
+		retCode, errno := C.seccomp_notify_id_valid(C.int(fd), C.uint64_t(id))
+		if retCode == 0 {
+			break
+		}
+
+		if errno == syscall.EINTR {
+			continue
+		}
+
+		if errno == syscall.ENOENT {
+			return errno
+		}
+
+		return errRc(retCode)
+	}
+
+	return nil
+}

vendor/modules.txt

@@ -562,7 +562,7 @@ github.com/opencontainers/go-digest
 ## explicit
 github.com/opencontainers/image-spec/specs-go
 github.com/opencontainers/image-spec/specs-go/v1
-# github.com/opencontainers/runc v1.0.3
+# github.com/opencontainers/runc v1.1.0
 ## explicit
 github.com/opencontainers/runc/libcontainer/apparmor
 github.com/opencontainers/runc/libcontainer/cgroups
@@ -633,7 +633,7 @@ github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/tcp
 github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/udp
 github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/udp/udpproxy
 github.com/rootless-containers/rootlesskit/pkg/port/portutil
-# github.com/seccomp/libseccomp-golang v0.9.2-0.20200616122406-847368b35ebf
+# github.com/seccomp/libseccomp-golang v0.9.2-0.20210429002308-3879420cc921
 github.com/seccomp/libseccomp-golang
 # github.com/sirupsen/logrus v1.8.1
 ## explicit