Update vendors.

Signed-off-by: Lantao Liu <lantaol@google.com>

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/consts.go

@@ -0,0 +1,12 @@
+package seccomp
+
+const (
+	seccompOverwrite = "overwrite"
+	seccompAppend    = "append"
+	nothing          = "nothing"
+	kill             = "kill"
+	trap             = "trap"
+	trace            = "trace"
+	allow            = "allow"
+	errno            = "errno"
+)

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/parse_action.go

@@ -0,0 +1,135 @@
+package seccomp
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+// SyscallOpts contain options for parsing syscall rules
+type SyscallOpts struct {
+	Action   string
+	Syscall  string
+	Index    string
+	Value    string
+	ValueTwo string
+	Operator string
+}
+
+// ParseSyscallFlag takes a SyscallOpts struct and the seccomp configuration
+// and sets the new syscall rule accordingly
+func ParseSyscallFlag(args SyscallOpts, config *rspec.LinuxSeccomp) error {
+	var arguments []string
+	if args.Index != "" && args.Value != "" && args.ValueTwo != "" && args.Operator != "" {
+		arguments = []string{args.Action, args.Syscall, args.Index, args.Value,
+			args.ValueTwo, args.Operator}
+	} else {
+		arguments = []string{args.Action, args.Syscall}
+	}
+
+	action, _ := parseAction(arguments[0])
+	if action == config.DefaultAction && args.argsAreEmpty() {
+		// default already set, no need to make changes
+		return nil
+	}
+
+	var newSyscall rspec.LinuxSyscall
+	numOfArgs := len(arguments)
+	if numOfArgs == 6 || numOfArgs == 2 {
+		argStruct, err := parseArguments(arguments[1:])
+		if err != nil {
+			return err
+		}
+		newSyscall = newSyscallStruct(arguments[1], action, argStruct)
+	} else {
+		return fmt.Errorf("incorrect number of arguments to ParseSyscall: %d", numOfArgs)
+	}
+
+	descison, err := decideCourseOfAction(&newSyscall, config.Syscalls)
+	if err != nil {
+		return err
+	}
+	delimDescison := strings.Split(descison, ":")
+
+	if delimDescison[0] == seccompAppend {
+		config.Syscalls = append(config.Syscalls, newSyscall)
+	}
+
+	if delimDescison[0] == seccompOverwrite {
+		indexForOverwrite, err := strconv.ParseInt(delimDescison[1], 10, 32)
+		if err != nil {
+			return err
+		}
+		config.Syscalls[indexForOverwrite] = newSyscall
+	}
+
+	return nil
+}
+
+var actions = map[string]rspec.LinuxSeccompAction{
+	"allow": rspec.ActAllow,
+	"errno": rspec.ActErrno,
+	"kill":  rspec.ActKill,
+	"trace": rspec.ActTrace,
+	"trap":  rspec.ActTrap,
+}
+
+// Take passed action, return the SCMP_ACT_<ACTION> version of it
+func parseAction(action string) (rspec.LinuxSeccompAction, error) {
+	a, ok := actions[action]
+	if !ok {
+		return "", fmt.Errorf("unrecognized action: %s", action)
+	}
+	return a, nil
+}
+
+// ParseDefaultAction sets the default action of the seccomp configuration
+// and then removes any rules that were already specified with this action
+func ParseDefaultAction(action string, config *rspec.LinuxSeccomp) error {
+	if action == "" {
+		return nil
+	}
+
+	defaultAction, err := parseAction(action)
+	if err != nil {
+		return err
+	}
+	config.DefaultAction = defaultAction
+	err = RemoveAllMatchingRules(config, defaultAction)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// ParseDefaultActionForce simply sets the default action of the seccomp configuration
+func ParseDefaultActionForce(action string, config *rspec.LinuxSeccomp) error {
+	if action == "" {
+		return nil
+	}
+
+	defaultAction, err := parseAction(action)
+	if err != nil {
+		return err
+	}
+	config.DefaultAction = defaultAction
+	return nil
+}
+
+func newSyscallStruct(name string, action rspec.LinuxSeccompAction, args []rspec.LinuxSeccompArg) rspec.LinuxSyscall {
+	syscallStruct := rspec.LinuxSyscall{
+		Names:  []string{name},
+		Action: action,
+		Args:   args,
+	}
+	return syscallStruct
+}
+
+func (s SyscallOpts) argsAreEmpty() bool {
+	return (s.Index == "" &&
+		s.Value == "" &&
+		s.ValueTwo == "" &&
+		s.Operator == "")
+}

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/parse_architecture.go

@@ -0,0 +1,55 @@
+package seccomp
+
+import (
+	"fmt"
+
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+// ParseArchitectureFlag takes the raw string passed with the --arch flag, parses it
+// and updates the Seccomp config accordingly
+func ParseArchitectureFlag(architectureArg string, config *rspec.LinuxSeccomp) error {
+	correctedArch, err := parseArch(architectureArg)
+	if err != nil {
+		return err
+	}
+
+	shouldAppend := true
+	for _, alreadySpecified := range config.Architectures {
+		if correctedArch == alreadySpecified {
+			shouldAppend = false
+		}
+	}
+	if shouldAppend {
+		config.Architectures = append(config.Architectures, correctedArch)
+	}
+	return nil
+}
+
+func parseArch(arch string) (rspec.Arch, error) {
+	arches := map[string]rspec.Arch{
+		"x86":         rspec.ArchX86,
+		"amd64":       rspec.ArchX86_64,
+		"x32":         rspec.ArchX32,
+		"arm":         rspec.ArchARM,
+		"arm64":       rspec.ArchAARCH64,
+		"mips":        rspec.ArchMIPS,
+		"mips64":      rspec.ArchMIPS64,
+		"mips64n32":   rspec.ArchMIPS64N32,
+		"mipsel":      rspec.ArchMIPSEL,
+		"mipsel64":    rspec.ArchMIPSEL64,
+		"mipsel64n32": rspec.ArchMIPSEL64N32,
+		"parisc":      rspec.ArchPARISC,
+		"parisc64":    rspec.ArchPARISC64,
+		"ppc":         rspec.ArchPPC,
+		"ppc64":       rspec.ArchPPC64,
+		"ppc64le":     rspec.ArchPPC64LE,
+		"s390":        rspec.ArchS390,
+		"s390x":       rspec.ArchS390X,
+	}
+	a, ok := arches[arch]
+	if !ok {
+		return "", fmt.Errorf("unrecognized architecture: %s", arch)
+	}
+	return a, nil
+}

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/parse_arguments.go

@@ -0,0 +1,73 @@
+package seccomp
+
+import (
+	"fmt"
+	"strconv"
+
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+// parseArguments takes a list of arguments (delimArgs). It parses and fills out
+// the argument information and returns a slice of arg structs
+func parseArguments(delimArgs []string) ([]rspec.LinuxSeccompArg, error) {
+	nilArgSlice := []rspec.LinuxSeccompArg{}
+	numberOfArgs := len(delimArgs)
+
+	// No parameters passed with syscall
+	if numberOfArgs == 1 {
+		return nilArgSlice, nil
+	}
+
+	// Correct number of parameters passed with syscall
+	if numberOfArgs == 5 {
+		syscallIndex, err := strconv.ParseUint(delimArgs[1], 10, 0)
+		if err != nil {
+			return nilArgSlice, err
+		}
+
+		syscallValue, err := strconv.ParseUint(delimArgs[2], 10, 64)
+		if err != nil {
+			return nilArgSlice, err
+		}
+
+		syscallValueTwo, err := strconv.ParseUint(delimArgs[3], 10, 64)
+		if err != nil {
+			return nilArgSlice, err
+		}
+
+		syscallOp, err := parseOperator(delimArgs[4])
+		if err != nil {
+			return nilArgSlice, err
+		}
+
+		argStruct := rspec.LinuxSeccompArg{
+			Index:    uint(syscallIndex),
+			Value:    syscallValue,
+			ValueTwo: syscallValueTwo,
+			Op:       syscallOp,
+		}
+
+		argSlice := []rspec.LinuxSeccompArg{}
+		argSlice = append(argSlice, argStruct)
+		return argSlice, nil
+	}
+
+	return nilArgSlice, fmt.Errorf("incorrect number of arguments passed with syscall: %d", numberOfArgs)
+}
+
+func parseOperator(operator string) (rspec.LinuxSeccompOperator, error) {
+	operators := map[string]rspec.LinuxSeccompOperator{
+		"NE": rspec.OpNotEqual,
+		"LT": rspec.OpLessThan,
+		"LE": rspec.OpLessEqual,
+		"EQ": rspec.OpEqualTo,
+		"GE": rspec.OpGreaterEqual,
+		"GT": rspec.OpGreaterThan,
+		"ME": rspec.OpMaskedEqual,
+	}
+	o, ok := operators[operator]
+	if !ok {
+		return "", fmt.Errorf("unrecognized operator: %s", operator)
+	}
+	return o, nil
+}

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/parse_remove.go

@@ -0,0 +1,52 @@
+package seccomp
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+// RemoveAction takes the argument string that was passed with the --remove flag,
+// parses it, and updates the Seccomp config accordingly
+func RemoveAction(arguments string, config *rspec.LinuxSeccomp) error {
+	if config == nil {
+		return fmt.Errorf("Cannot remove action from nil Seccomp pointer")
+	}
+
+	syscallsToRemove := strings.Split(arguments, ",")
+
+	for counter, syscallStruct := range config.Syscalls {
+		if reflect.DeepEqual(syscallsToRemove, syscallStruct.Names) {
+			config.Syscalls = append(config.Syscalls[:counter], config.Syscalls[counter+1:]...)
+		}
+	}
+
+	return nil
+}
+
+// RemoveAllSeccompRules removes all seccomp syscall rules
+func RemoveAllSeccompRules(config *rspec.LinuxSeccomp) error {
+	if config == nil {
+		return fmt.Errorf("Cannot remove action from nil Seccomp pointer")
+	}
+	newSyscallSlice := []rspec.LinuxSyscall{}
+	config.Syscalls = newSyscallSlice
+	return nil
+}
+
+// RemoveAllMatchingRules will remove any syscall rules that match the specified action
+func RemoveAllMatchingRules(config *rspec.LinuxSeccomp, seccompAction rspec.LinuxSeccompAction) error {
+	if config == nil {
+		return fmt.Errorf("Cannot remove action from nil Seccomp pointer")
+	}
+
+	for _, syscall := range config.Syscalls {
+		if reflect.DeepEqual(syscall.Action, seccompAction) {
+			RemoveAction(strings.Join(syscall.Names, ","), config)
+		}
+	}
+
+	return nil
+}

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/seccomp_default.go

@@ -0,0 +1,577 @@
+package seccomp
+
+import (
+	"runtime"
+	"syscall"
+
+	"github.com/opencontainers/runtime-spec/specs-go"
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+func arches() []rspec.Arch {
+	native := runtime.GOARCH
+
+	switch native {
+	case "amd64":
+		return []rspec.Arch{rspec.ArchX86_64, rspec.ArchX86, rspec.ArchX32}
+	case "arm64":
+		return []rspec.Arch{rspec.ArchARM, rspec.ArchAARCH64}
+	case "mips64":
+		return []rspec.Arch{rspec.ArchMIPS, rspec.ArchMIPS64, rspec.ArchMIPS64N32}
+	case "mips64n32":
+		return []rspec.Arch{rspec.ArchMIPS, rspec.ArchMIPS64, rspec.ArchMIPS64N32}
+	case "mipsel64":
+		return []rspec.Arch{rspec.ArchMIPSEL, rspec.ArchMIPSEL64, rspec.ArchMIPSEL64N32}
+	case "mipsel64n32":
+		return []rspec.Arch{rspec.ArchMIPSEL, rspec.ArchMIPSEL64, rspec.ArchMIPSEL64N32}
+	case "s390x":
+		return []rspec.Arch{rspec.ArchS390, rspec.ArchS390X}
+	default:
+		return []rspec.Arch{}
+	}
+}
+
+// DefaultProfile defines the whitelist for the default seccomp profile.
+func DefaultProfile(rs *specs.Spec) *rspec.LinuxSeccomp {
+
+	syscalls := []rspec.LinuxSyscall{
+		{
+			Names: []string{
+				"accept",
+				"accept4",
+				"access",
+				"alarm",
+				"bind",
+				"brk",
+				"capget",
+				"capset",
+				"chdir",
+				"chmod",
+				"chown",
+				"chown32",
+				"clock_getres",
+				"clock_gettime",
+				"clock_nanosleep",
+				"close",
+				"connect",
+				"copy_file_range",
+				"creat",
+				"dup",
+				"dup2",
+				"dup3",
+				"epoll_create",
+				"epoll_create1",
+				"epoll_ctl",
+				"epoll_ctl_old",
+				"epoll_pwait",
+				"epoll_wait",
+				"epoll_wait_old",
+				"eventfd",
+				"eventfd2",
+				"execve",
+				"execveat",
+				"exit",
+				"exit_group",
+				"faccessat",
+				"fadvise64",
+				"fadvise64_64",
+				"fallocate",
+				"fanotify_mark",
+				"fchdir",
+				"fchmod",
+				"fchmodat",
+				"fchown",
+				"fchown32",
+				"fchownat",
+				"fcntl",
+				"fcntl64",
+				"fdatasync",
+				"fgetxattr",
+				"flistxattr",
+				"flock",
+				"fork",
+				"fremovexattr",
+				"fsetxattr",
+				"fstat",
+				"fstat64",
+				"fstatat64",
+				"fstatfs",
+				"fstatfs64",
+				"fsync",
+				"ftruncate",
+				"ftruncate64",
+				"futex",
+				"futimesat",
+				"getcpu",
+				"getcwd",
+				"getdents",
+				"getdents64",
+				"getegid",
+				"getegid32",
+				"geteuid",
+				"geteuid32",
+				"getgid",
+				"getgid32",
+				"getgroups",
+				"getgroups32",
+				"getitimer",
+				"getpeername",
+				"getpgid",
+				"getpgrp",
+				"getpid",
+				"getppid",
+				"getpriority",
+				"getrandom",
+				"getresgid",
+				"getresgid32",
+				"getresuid",
+				"getresuid32",
+				"getrlimit",
+				"get_robust_list",
+				"getrusage",
+				"getsid",
+				"getsockname",
+				"getsockopt",
+				"get_thread_area",
+				"gettid",
+				"gettimeofday",
+				"getuid",
+				"getuid32",
+				"getxattr",
+				"inotify_add_watch",
+				"inotify_init",
+				"inotify_init1",
+				"inotify_rm_watch",
+				"io_cancel",
+				"ioctl",
+				"io_destroy",
+				"io_getevents",
+				"ioprio_get",
+				"ioprio_set",
+				"io_setup",
+				"io_submit",
+				"ipc",
+				"kill",
+				"lchown",
+				"lchown32",
+				"lgetxattr",
+				"link",
+				"linkat",
+				"listen",
+				"listxattr",
+				"llistxattr",
+				"_llseek",
+				"lremovexattr",
+				"lseek",
+				"lsetxattr",
+				"lstat",
+				"lstat64",
+				"madvise",
+				"memfd_create",
+				"mincore",
+				"mkdir",
+				"mkdirat",
+				"mknod",
+				"mknodat",
+				"mlock",
+				"mlock2",
+				"mlockall",
+				"mmap",
+				"mmap2",
+				"mprotect",
+				"mq_getsetattr",
+				"mq_notify",
+				"mq_open",
+				"mq_timedreceive",
+				"mq_timedsend",
+				"mq_unlink",
+				"mremap",
+				"msgctl",
+				"msgget",
+				"msgrcv",
+				"msgsnd",
+				"msync",
+				"munlock",
+				"munlockall",
+				"munmap",
+				"nanosleep",
+				"newfstatat",
+				"_newselect",
+				"open",
+				"openat",
+				"pause",
+				"pipe",
+				"pipe2",
+				"poll",
+				"ppoll",
+				"prctl",
+				"pread64",
+				"preadv",
+				"prlimit64",
+				"pselect6",
+				"pwrite64",
+				"pwritev",
+				"read",
+				"readahead",
+				"readlink",
+				"readlinkat",
+				"readv",
+				"recv",
+				"recvfrom",
+				"recvmmsg",
+				"recvmsg",
+				"remap_file_pages",
+				"removexattr",
+				"rename",
+				"renameat",
+				"renameat2",
+				"restart_syscall",
+				"rmdir",
+				"rt_sigaction",
+				"rt_sigpending",
+				"rt_sigprocmask",
+				"rt_sigqueueinfo",
+				"rt_sigreturn",
+				"rt_sigsuspend",
+				"rt_sigtimedwait",
+				"rt_tgsigqueueinfo",
+				"sched_getaffinity",
+				"sched_getattr",
+				"sched_getparam",
+				"sched_get_priority_max",
+				"sched_get_priority_min",
+				"sched_getscheduler",
+				"sched_rr_get_interval",
+				"sched_setaffinity",
+				"sched_setattr",
+				"sched_setparam",
+				"sched_setscheduler",
+				"sched_yield",
+				"seccomp",
+				"select",
+				"semctl",
+				"semget",
+				"semop",
+				"semtimedop",
+				"send",
+				"sendfile",
+				"sendfile64",
+				"sendmmsg",
+				"sendmsg",
+				"sendto",
+				"setfsgid",
+				"setfsgid32",
+				"setfsuid",
+				"setfsuid32",
+				"setgid",
+				"setgid32",
+				"setgroups",
+				"setgroups32",
+				"setitimer",
+				"setpgid",
+				"setpriority",
+				"setregid",
+				"setregid32",
+				"setresgid",
+				"setresgid32",
+				"setresuid",
+				"setresuid32",
+				"setreuid",
+				"setreuid32",
+				"setrlimit",
+				"set_robust_list",
+				"setsid",
+				"setsockopt",
+				"set_thread_area",
+				"set_tid_address",
+				"setuid",
+				"setuid32",
+				"setxattr",
+				"shmat",
+				"shmctl",
+				"shmdt",
+				"shmget",
+				"shutdown",
+				"sigaltstack",
+				"signalfd",
+				"signalfd4",
+				"sigreturn",
+				"socket",
+				"socketcall",
+				"socketpair",
+				"splice",
+				"stat",
+				"stat64",
+				"statfs",
+				"statfs64",
+				"symlink",
+				"symlinkat",
+				"sync",
+				"sync_file_range",
+				"syncfs",
+				"sysinfo",
+				"syslog",
+				"tee",
+				"tgkill",
+				"time",
+				"timer_create",
+				"timer_delete",
+				"timerfd_create",
+				"timerfd_gettime",
+				"timerfd_settime",
+				"timer_getoverrun",
+				"timer_gettime",
+				"timer_settime",
+				"times",
+				"tkill",
+				"truncate",
+				"truncate64",
+				"ugetrlimit",
+				"umask",
+				"uname",
+				"unlink",
+				"unlinkat",
+				"utime",
+				"utimensat",
+				"utimes",
+				"vfork",
+				"vmsplice",
+				"wait4",
+				"waitid",
+				"waitpid",
+				"write",
+				"writev",
+			},
+			Action: rspec.ActAllow,
+			Args:   []rspec.LinuxSeccompArg{},
+		},
+		{
+			Names:  []string{"personality"},
+			Action: rspec.ActAllow,
+			Args: []rspec.LinuxSeccompArg{
+				{
+					Index: 0,
+					Value: 0x0,
+					Op:    rspec.OpEqualTo,
+				},
+				{
+					Index: 0,
+					Value: 0x0008,
+					Op:    rspec.OpEqualTo,
+				},
+				{
+					Index: 0,
+					Value: 0xffffffff,
+					Op:    rspec.OpEqualTo,
+				},
+			},
+		},
+	}
+	var sysCloneFlagsIndex uint
+
+	capSysAdmin := false
+	caps := make(map[string]bool)
+
+	for _, cap := range rs.Process.Capabilities.Bounding {
+		caps[cap] = true
+	}
+	for _, cap := range rs.Process.Capabilities.Effective {
+		caps[cap] = true
+	}
+	for _, cap := range rs.Process.Capabilities.Inheritable {
+		caps[cap] = true
+	}
+	for _, cap := range rs.Process.Capabilities.Permitted {
+		caps[cap] = true
+	}
+	for _, cap := range rs.Process.Capabilities.Ambient {
+		caps[cap] = true
+	}
+
+	for cap := range caps {
+		switch cap {
+		case "CAP_DAC_READ_SEARCH":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names:  []string{"open_by_handle_at"},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_ADMIN":
+			capSysAdmin = true
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names: []string{
+						"bpf",
+						"clone",
+						"fanotify_init",
+						"lookup_dcookie",
+						"mount",
+						"name_to_handle_at",
+						"perf_event_open",
+						"setdomainname",
+						"sethostname",
+						"setns",
+						"umount",
+						"umount2",
+						"unshare",
+					},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_BOOT":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names:  []string{"reboot"},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_CHROOT":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names:  []string{"chroot"},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_MODULE":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names: []string{
+						"delete_module",
+						"init_module",
+						"finit_module",
+						"query_module",
+					},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_PACCT":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names:  []string{"acct"},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_PTRACE":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names: []string{
+						"kcmp",
+						"process_vm_readv",
+						"process_vm_writev",
+						"ptrace",
+					},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_RAWIO":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names: []string{
+						"iopl",
+						"ioperm",
+					},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_TIME":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names: []string{
+						"settimeofday",
+						"stime",
+						"adjtimex",
+					},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		case "CAP_SYS_TTY_CONFIG":
+			syscalls = append(syscalls, []rspec.LinuxSyscall{
+				{
+					Names:  []string{"vhangup"},
+					Action: rspec.ActAllow,
+					Args:   []rspec.LinuxSeccompArg{},
+				},
+			}...)
+		}
+	}
+
+	if !capSysAdmin {
+		syscalls = append(syscalls, []rspec.LinuxSyscall{
+			{
+				Names:  []string{"clone"},
+				Action: rspec.ActAllow,
+				Args: []rspec.LinuxSeccompArg{
+					{
+						Index:    sysCloneFlagsIndex,
+						Value:    syscall.CLONE_NEWNS | syscall.CLONE_NEWUTS | syscall.CLONE_NEWIPC | syscall.CLONE_NEWUSER | syscall.CLONE_NEWPID | syscall.CLONE_NEWNET,
+						ValueTwo: 0,
+						Op:       rspec.OpMaskedEqual,
+					},
+				},
+			},
+		}...)
+
+	}
+
+	arch := runtime.GOARCH
+	switch arch {
+	case "arm", "arm64":
+		syscalls = append(syscalls, []rspec.LinuxSyscall{
+			{
+				Names: []string{
+					"breakpoint",
+					"cacheflush",
+					"set_tls",
+				},
+				Action: rspec.ActAllow,
+				Args:   []rspec.LinuxSeccompArg{},
+			},
+		}...)
+	case "amd64", "x32":
+		syscalls = append(syscalls, []rspec.LinuxSyscall{
+			{
+				Names:  []string{"arch_prctl"},
+				Action: rspec.ActAllow,
+				Args:   []rspec.LinuxSeccompArg{},
+			},
+		}...)
+		fallthrough
+	case "x86":
+		syscalls = append(syscalls, []rspec.LinuxSyscall{
+			{
+				Names:  []string{"modify_ldt"},
+				Action: rspec.ActAllow,
+				Args:   []rspec.LinuxSeccompArg{},
+			},
+		}...)
+	case "s390", "s390x":
+		syscalls = append(syscalls, []rspec.LinuxSyscall{
+			{
+				Names: []string{
+					"s390_pci_mmio_read",
+					"s390_pci_mmio_write",
+					"s390_runtime_instr",
+				},
+				Action: rspec.ActAllow,
+				Args:   []rspec.LinuxSeccompArg{},
+			},
+		}...)
+		/* Flags parameter of the clone syscall is the 2nd on s390 */
+	}
+
+	return &rspec.LinuxSeccomp{
+		DefaultAction: rspec.ActErrno,
+		Architectures: arches(),
+		Syscalls:      syscalls,
+	}
+}

vendor/github.com/opencontainers/runtime-tools/generate/seccomp/syscall_compare.go

@@ -0,0 +1,140 @@
+package seccomp
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+// Determine if a new syscall rule should be appended, overwrite an existing rule
+// or if no action should be taken at all
+func decideCourseOfAction(newSyscall *rspec.LinuxSyscall, syscalls []rspec.LinuxSyscall) (string, error) {
+	ruleForSyscallAlreadyExists := false
+
+	var sliceOfDeterminedActions []string
+	for i, syscall := range syscalls {
+		if sameName(&syscall, newSyscall) {
+			ruleForSyscallAlreadyExists = true
+
+			if identical(newSyscall, &syscall) {
+				sliceOfDeterminedActions = append(sliceOfDeterminedActions, nothing)
+			}
+
+			if sameAction(newSyscall, &syscall) {
+				if bothHaveArgs(newSyscall, &syscall) {
+					sliceOfDeterminedActions = append(sliceOfDeterminedActions, seccompAppend)
+				}
+				if onlyOneHasArgs(newSyscall, &syscall) {
+					if firstParamOnlyHasArgs(newSyscall, &syscall) {
+						sliceOfDeterminedActions = append(sliceOfDeterminedActions, "overwrite:"+strconv.Itoa(i))
+					} else {
+						sliceOfDeterminedActions = append(sliceOfDeterminedActions, nothing)
+					}
+				}
+			}
+
+			if !sameAction(newSyscall, &syscall) {
+				if bothHaveArgs(newSyscall, &syscall) {
+					if sameArgs(newSyscall, &syscall) {
+						sliceOfDeterminedActions = append(sliceOfDeterminedActions, "overwrite:"+strconv.Itoa(i))
+					}
+					if !sameArgs(newSyscall, &syscall) {
+						sliceOfDeterminedActions = append(sliceOfDeterminedActions, seccompAppend)
+					}
+				}
+				if onlyOneHasArgs(newSyscall, &syscall) {
+					sliceOfDeterminedActions = append(sliceOfDeterminedActions, seccompAppend)
+				}
+				if neitherHasArgs(newSyscall, &syscall) {
+					sliceOfDeterminedActions = append(sliceOfDeterminedActions, "overwrite:"+strconv.Itoa(i))
+				}
+			}
+		}
+	}
+
+	if !ruleForSyscallAlreadyExists {
+		sliceOfDeterminedActions = append(sliceOfDeterminedActions, seccompAppend)
+	}
+
+	// Nothing has highest priority
+	for _, determinedAction := range sliceOfDeterminedActions {
+		if determinedAction == nothing {
+			return determinedAction, nil
+		}
+	}
+
+	// Overwrite has second highest priority
+	for _, determinedAction := range sliceOfDeterminedActions {
+		if strings.Contains(determinedAction, seccompOverwrite) {
+			return determinedAction, nil
+		}
+	}
+
+	// Append has the lowest priority
+	for _, determinedAction := range sliceOfDeterminedActions {
+		if determinedAction == seccompAppend {
+			return determinedAction, nil
+		}
+	}
+
+	return "", fmt.Errorf("Trouble determining action: %s", sliceOfDeterminedActions)
+}
+
+func hasArguments(config *rspec.LinuxSyscall) bool {
+	nilSyscall := new(rspec.LinuxSyscall)
+	return !sameArgs(nilSyscall, config)
+}
+
+func identical(config1, config2 *rspec.LinuxSyscall) bool {
+	return reflect.DeepEqual(config1, config2)
+}
+
+func identicalExceptAction(config1, config2 *rspec.LinuxSyscall) bool {
+	samename := sameName(config1, config2)
+	sameAction := sameAction(config1, config2)
+	sameArgs := sameArgs(config1, config2)
+
+	return samename && !sameAction && sameArgs
+}
+
+func identicalExceptArgs(config1, config2 *rspec.LinuxSyscall) bool {
+	samename := sameName(config1, config2)
+	sameAction := sameAction(config1, config2)
+	sameArgs := sameArgs(config1, config2)
+
+	return samename && sameAction && !sameArgs
+}
+
+func sameName(config1, config2 *rspec.LinuxSyscall) bool {
+	return reflect.DeepEqual(config1.Names, config2.Names)
+}
+
+func sameAction(config1, config2 *rspec.LinuxSyscall) bool {
+	return config1.Action == config2.Action
+}
+
+func sameArgs(config1, config2 *rspec.LinuxSyscall) bool {
+	return reflect.DeepEqual(config1.Args, config2.Args)
+}
+
+func bothHaveArgs(config1, config2 *rspec.LinuxSyscall) bool {
+	return hasArguments(config1) && hasArguments(config2)
+}
+
+func onlyOneHasArgs(config1, config2 *rspec.LinuxSyscall) bool {
+	conf1 := hasArguments(config1)
+	conf2 := hasArguments(config2)
+
+	return (conf1 && !conf2) || (!conf1 && conf2)
+}
+
+func neitherHasArgs(config1, config2 *rspec.LinuxSyscall) bool {
+	return !hasArguments(config1) && !hasArguments(config2)
+}
+
+func firstParamOnlyHasArgs(config1, config2 *rspec.LinuxSyscall) bool {
+	return !hasArguments(config1) && hasArguments(config2)
+}

vendor/github.com/opencontainers/runtime-tools/generate/spec.go

@@ -0,0 +1,109 @@
+package generate
+
+import (
+	rspec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+func (g *Generator) initSpec() {
+	if g.spec == nil {
+		g.spec = &rspec.Spec{}
+	}
+}
+
+func (g *Generator) initSpecProcess() {
+	g.initSpec()
+	if g.spec.Process == nil {
+		g.spec.Process = &rspec.Process{}
+	}
+}
+
+func (g *Generator) initSpecProcessConsoleSize() {
+	g.initSpecProcess()
+	if g.spec.Process.ConsoleSize == nil {
+		g.spec.Process.ConsoleSize = &rspec.Box{}
+	}
+}
+
+func (g *Generator) initSpecProcessCapabilities() {
+	g.initSpecProcess()
+	if g.spec.Process.Capabilities == nil {
+		g.spec.Process.Capabilities = &rspec.LinuxCapabilities{}
+	}
+}
+
+func (g *Generator) initSpecRoot() {
+	g.initSpec()
+	if g.spec.Root == nil {
+		g.spec.Root = &rspec.Root{}
+	}
+}
+
+func (g *Generator) initSpecAnnotations() {
+	g.initSpec()
+	if g.spec.Annotations == nil {
+		g.spec.Annotations = make(map[string]string)
+	}
+}
+
+func (g *Generator) initSpecHooks() {
+	g.initSpec()
+	if g.spec.Hooks == nil {
+		g.spec.Hooks = &rspec.Hooks{}
+	}
+}
+
+func (g *Generator) initSpecLinux() {
+	g.initSpec()
+	if g.spec.Linux == nil {
+		g.spec.Linux = &rspec.Linux{}
+	}
+}
+
+func (g *Generator) initSpecLinuxSysctl() {
+	g.initSpecLinux()
+	if g.spec.Linux.Sysctl == nil {
+		g.spec.Linux.Sysctl = make(map[string]string)
+	}
+}
+
+func (g *Generator) initSpecLinuxSeccomp() {
+	g.initSpecLinux()
+	if g.spec.Linux.Seccomp == nil {
+		g.spec.Linux.Seccomp = &rspec.LinuxSeccomp{}
+	}
+}
+
+func (g *Generator) initSpecLinuxResources() {
+	g.initSpecLinux()
+	if g.spec.Linux.Resources == nil {
+		g.spec.Linux.Resources = &rspec.LinuxResources{}
+	}
+}
+
+func (g *Generator) initSpecLinuxResourcesCPU() {
+	g.initSpecLinuxResources()
+	if g.spec.Linux.Resources.CPU == nil {
+		g.spec.Linux.Resources.CPU = &rspec.LinuxCPU{}
+	}
+}
+
+func (g *Generator) initSpecLinuxResourcesMemory() {
+	g.initSpecLinuxResources()
+	if g.spec.Linux.Resources.Memory == nil {
+		g.spec.Linux.Resources.Memory = &rspec.LinuxMemory{}
+	}
+}
+
+func (g *Generator) initSpecLinuxResourcesNetwork() {
+	g.initSpecLinuxResources()
+	if g.spec.Linux.Resources.Network == nil {
+		g.spec.Linux.Resources.Network = &rspec.LinuxNetwork{}
+	}
+}
+
+func (g *Generator) initSpecLinuxResourcesPids() {
+	g.initSpecLinuxResources()
+	if g.spec.Linux.Resources.Pids == nil {
+		g.spec.Linux.Resources.Pids = &rspec.LinuxPids{}
+	}
+}