package app

import "golang.org/x/sys/unix"

func raiseFileLimits() (uint64, error) {
	rlimit := unix.Rlimit{}
	if err := unix.Getrlimit(unix.RLIMIT_NOFILE, &rlimit); err != nil {
		return 0, err
	}
	rlimit.Cur = rlimit.Max
	if err := unix.Setrlimit(unix.RLIMIT_NOFILE, &rlimit); err != nil {
		return 0, err
	}

	return rlimit.Cur, nil

import (
	"strconv"
	"testing"

	v1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/resource"
	"k8s.io/kubernetes/pkg/apis/scheduling"
)

const (
	standardMemoryAmount = 8000000000
)

var (
	cpuLimit = v1.Pod{
		Spec: v1.PodSpec{
			Containers: []v1.Container{
				{
					Resources: v1.ResourceRequirements{
						Limits: v1.ResourceList{
							v1.ResourceName(v1.ResourceCPU): resource.MustParse("10"),
						},

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package pidlimit

import (
	statsapi "k8s.io/kubelet/pkg/apis/stats/v1alpha1"
)

// Stats provides basic information about max and current process count
func Stats() (*statsapi.RlimitStats, error) {
	return nil, nil

	copy(mappedArgs[:], ev.Args[:])

	switch ev.Type {
	case oldtrace.EvGomaxprocs:
		mappedType = go122.EvProcsChange
		if it.preInit {
			// The first EvGomaxprocs signals the end of trace initialization. At this point we've seen
			// all goroutines that already existed at trace begin.
			it.preInit = false
			for gid := range it.createdPreInit {
				// These are goroutines that already existed when tracing started but for which we

    case $MAX_FD in #(
      max*)
        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
        # shellcheck disable=SC2039,SC3045
        MAX_FD=$( ulimit -H -n ) ||
            warn "Could not query maximum file descriptor limit"
    esac
    case $MAX_FD in  #(
      '' | soft) :;; #(
      *)
        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.

			cpuLimitAndPeriod, cgroupPath, errScan)
	}
	cpuLimit := int64(-1)
	if cpuLimitStr != Cgroup2MaxCpuLimit {
		cpuLimit, err = strconv.ParseInt(cpuLimitStr, 10, 64)
		if err != nil {
			return nil, fmt.Errorf("failed to convert CPU limit as integer for cgroup %v: %v", cgroupPath, err)
		}
	}
	cpuPeriod, errPeriod := strconv.ParseUint(cpuPeriodStr, 10, 64)

	default:
		setNproc = false
	case "aix":
		nproc = 9
	case "linux":
		nproc = 6
	case "darwin", "dragonfly", "freebsd", "netbsd", "openbsd":
		nproc = 7
	}
	if setNproc {
		var rlim syscall.Rlimit
		if syscall.Getrlimit(nproc, &rlim) == nil {
			max := int(rlim.Cur) / (threads + 5)
			if attempts > max {
				t.Logf("lowering attempts from %d to %d for RLIMIT_NPROC", attempts, max)
				attempts = max
			}
		}

//sysnb	Getpgid(pid int) (pgid int, err error)
//sysnb	Getpgrp() (pgrp int)
//sysnb	Getpid() (pid int)
//sysnb	Getppid() (ppid int)
//sys	Getpriority(which int, who int) (prio int, err error)
//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Getuid() (uid int)
//sys	Issetugid() (tainted bool)

				}
			}
		}
	}
	if rlimit := summary.Node.Rlimit; rlimit != nil {
		if rlimit.NumOfRunningProcesses != nil && rlimit.MaxPID != nil {
			available := int64(*rlimit.MaxPID) - int64(*rlimit.NumOfRunningProcesses)
			result[evictionapi.SignalPIDAvailable] = signalObservation{
				available: resource.NewQuantity(available, resource.DecimalSI),
				capacity:  resource.NewQuantity(int64(*rlimit.MaxPID), resource.DecimalSI),

//sysnb	Getpgid(pid int) (pgid int, err error)
//sysnb	Getpgrp() (pgrp int)
//sysnb	Getpid() (pid int)
//sysnb	Getppid() (ppid int)
//sys	Getpriority(which int, who int) (prio int, err error)
//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
//sysnb	Getrusage(who int, rusage *Rusage) (err error)
//sysnb	Getsid(pid int) (sid int, err error)
//sysnb	Gettimeofday(tv *Timeval) (err error)
//sysnb	Getuid() (uid int)
//sys	Issetugid() (tainted bool)