ws-daemon: Returns no limit if cpu.max does not exist.

Signed-off-by: utam0k <k0ma@utam0k.jp>

components/ws-daemon/pkg/iws/iws.go

@@ -7,6 +7,7 @@ package iws
 import (
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"math"
@@ -1104,13 +1105,16 @@ func getCpuResourceInfoV2(mountPoint, cgroupPath string) (*api.Cpu, error) {
 	used := cpuUsage / totalTime * 1000
 
 	quota, period, err := cpu.Max()
-	if err != nil {
+	if errors.Is(err, os.ErrNotExist) {
+		quota = math.MaxUint64
+	} else if err != nil {
 		return nil, err
 	}
 
 	// if no cpu limit has been specified, use the number of cores
 	var limit uint64
 	if quota == math.MaxUint64 {
+        // TODO(toru): we have to check a parent cgroup instead of a host resources
 		cpuInfo, err := linuxproc.ReadCPUInfo("/proc/cpuinfo")
 		if err != nil {
 			return nil, err