Bump dependency opencontainers/runc@v1.0.0-rc10

vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs2/io.go

@@ -0,0 +1,124 @@
+// +build linux
+
+package fs2
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/opencontainers/runc/libcontainer/cgroups"
+	"github.com/opencontainers/runc/libcontainer/cgroups/fscommon"
+	"github.com/opencontainers/runc/libcontainer/configs"
+)
+
+func setIo(dirPath string, cgroup *configs.Cgroup) error {
+	if cgroup.Resources.BlkioWeight != 0 {
+		filename := "io.bfq.weight"
+		if err := fscommon.WriteFile(dirPath, filename, strconv.FormatUint(uint64(cgroup.Resources.BlkioWeight), 10)); err != nil {
+			return err
+		}
+	}
+
+	for _, td := range cgroup.Resources.BlkioThrottleReadBpsDevice {
+		if err := fscommon.WriteFile(dirPath, "io.max", td.StringName("rbps")); err != nil {
+			return err
+		}
+	}
+	for _, td := range cgroup.Resources.BlkioThrottleWriteBpsDevice {
+		if err := fscommon.WriteFile(dirPath, "io.max", td.StringName("wbps")); err != nil {
+			return err
+		}
+	}
+	for _, td := range cgroup.Resources.BlkioThrottleReadIOPSDevice {
+		if err := fscommon.WriteFile(dirPath, "io.max", td.StringName("riops")); err != nil {
+			return err
+		}
+	}
+	for _, td := range cgroup.Resources.BlkioThrottleWriteIOPSDevice {
+		if err := fscommon.WriteFile(dirPath, "io.max", td.StringName("wiops")); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func readCgroup2MapFile(dirPath string, name string) (map[string][]string, error) {
+	ret := map[string][]string{}
+	p := filepath.Join(dirPath, name)
+	f, err := os.Open(p)
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+	scanner := bufio.NewScanner(f)
+	for scanner.Scan() {
+		line := scanner.Text()
+		parts := strings.Fields(line)
+		if len(parts) < 2 {
+			continue
+		}
+		ret[parts[0]] = parts[1:]
+	}
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+	return ret, nil
+}
+
+func statIo(dirPath string, stats *cgroups.Stats) error {
+	// more details on the io.stat file format: https://www.kernel.org/doc/Documentation/cgroup-v2.txt
+	var ioServiceBytesRecursive []cgroups.BlkioStatEntry
+	values, err := readCgroup2MapFile(dirPath, "io.stat")
+	if err != nil {
+		return err
+	}
+	for k, v := range values {
+		d := strings.Split(k, ":")
+		if len(d) != 2 {
+			continue
+		}
+		minor, err := strconv.ParseUint(d[0], 10, 0)
+		if err != nil {
+			return err
+		}
+		major, err := strconv.ParseUint(d[1], 10, 0)
+		if err != nil {
+			return err
+		}
+
+		for _, item := range v {
+			d := strings.Split(item, "=")
+			if len(d) != 2 {
+				continue
+			}
+			op := d[0]
+
+			// Accommodate the cgroup v1 naming
+			switch op {
+			case "rbytes":
+				op = "read"
+			case "wbytes":
+				op = "write"
+			}
+
+			value, err := strconv.ParseUint(d[1], 10, 0)
+			if err != nil {
+				return err
+			}
+
+			entry := cgroups.BlkioStatEntry{
+				Op:    op,
+				Major: major,
+				Minor: minor,
+				Value: value,
+			}
+			ioServiceBytesRecursive = append(ioServiceBytesRecursive, entry)
+		}
+	}
+	stats.BlkioStats = cgroups.BlkioStats{IoServiceBytesRecursive: ioServiceBytesRecursive}
+	return nil
+}