Initial commit

vendor/github.com/hyperhq/hypercli/daemon/daemon_linux.go

@@ -0,0 +1,60 @@
+package daemon
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/hyperhq/hypercli/pkg/mount"
+)
+
+// cleanupMounts umounts shm/mqueue mounts for old containers
+func (daemon *Daemon) cleanupMounts() error {
+	logrus.Debugf("Cleaning up old shm/mqueue mounts: start.")
+	f, err := os.Open("/proc/self/mountinfo")
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	return daemon.cleanupMountsFromReader(f, mount.Unmount)
+}
+
+func (daemon *Daemon) cleanupMountsFromReader(reader io.Reader, unmount func(target string) error) error {
+	if daemon.repository == "" {
+		return nil
+	}
+	sc := bufio.NewScanner(reader)
+	var errors []string
+	for sc.Scan() {
+		line := sc.Text()
+		fields := strings.Fields(line)
+		if strings.HasPrefix(fields[4], daemon.repository) {
+			logrus.Debugf("Mount base: %v, repository %s", fields[4], daemon.repository)
+			mnt := fields[4]
+			mountBase := filepath.Base(mnt)
+			if mountBase == "mqueue" || mountBase == "shm" {
+				logrus.Debugf("Unmounting %v", mnt)
+				if err := unmount(mnt); err != nil {
+					logrus.Error(err)
+					errors = append(errors, err.Error())
+				}
+			}
+		}
+	}
+
+	if err := sc.Err(); err != nil {
+		return err
+	}
+
+	if len(errors) > 0 {
+		return fmt.Errorf("Error cleaningup mounts:\n%v", strings.Join(errors, "\n"))
+	}
+
+	logrus.Debugf("Cleaning up old shm/mqueue mounts: done.")
+	return nil
+}