Import docker/docker/pkg/mount into runc

This will help get rid of docker/docker dependency in runc 👼

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

libcontainer/factory_linux.go

@@ -11,13 +11,13 @@ import (
 	"runtime/debug"
 	"strconv"
 
-	"github.com/docker/docker/pkg/mount"
 	"github.com/opencontainers/runc/libcontainer/cgroups"
 	"github.com/opencontainers/runc/libcontainer/cgroups/fs"
 	"github.com/opencontainers/runc/libcontainer/cgroups/systemd"
 	"github.com/opencontainers/runc/libcontainer/configs"
 	"github.com/opencontainers/runc/libcontainer/configs/validate"
 	"github.com/opencontainers/runc/libcontainer/intelrdt"
+	"github.com/opencontainers/runc/libcontainer/mount"
 	"github.com/opencontainers/runc/libcontainer/utils"
 
 	"golang.org/x/sys/unix"

libcontainer/factory_linux_test.go

@@ -9,8 +9,8 @@ import (
 	"reflect"
 	"testing"
 
-	"github.com/docker/docker/pkg/mount"
 	"github.com/opencontainers/runc/libcontainer/configs"
+	"github.com/opencontainers/runc/libcontainer/mount"
 	"github.com/opencontainers/runc/libcontainer/utils"
 
 	"golang.org/x/sys/unix"

libcontainer/mount/mount.go

@@ -0,0 +1,23 @@
+package mount
+
+// GetMounts retrieves a list of mounts for the current running process.
+func GetMounts() ([]*Info, error) {
+	return parseMountTable()
+}
+
+// Mounted looks at /proc/self/mountinfo to determine of the specified
+// mountpoint has been mounted
+func Mounted(mountpoint string) (bool, error) {
+	entries, err := parseMountTable()
+	if err != nil {
+		return false, err
+	}
+
+	// Search the table for the mountpoint
+	for _, e := range entries {
+		if e.Mountpoint == mountpoint {
+			return true, nil
+		}
+	}
+	return false, nil
+}

vendor/github.com/docker/docker/pkg/mount/mountinfo_linux.go → libcontainer/mount/mount_linux.go

@@ -80,16 +80,3 @@ func parseInfoFile(r io.Reader) ([]*Info, error) {
 	}
 	return out, nil
 }
-
-// PidMountInfo collects the mounts for a specific process ID. If the process
-// ID is unknown, it is better to use `GetMounts` which will inspect
-// "/proc/self/mountinfo" instead.
-func PidMountInfo(pid int) ([]*Info, error) {
-	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	return parseInfoFile(f)
-}

libcontainer/rootfs_linux.go

@@ -14,10 +14,10 @@ import (
 	"time"
 
 	"github.com/cyphar/filepath-securejoin"
-	"github.com/docker/docker/pkg/mount"
 	"github.com/mrunalp/fileutils"
 	"github.com/opencontainers/runc/libcontainer/cgroups"
 	"github.com/opencontainers/runc/libcontainer/configs"
+	"github.com/opencontainers/runc/libcontainer/mount"
 	"github.com/opencontainers/runc/libcontainer/system"
 	libcontainerUtils "github.com/opencontainers/runc/libcontainer/utils"
 	"github.com/opencontainers/selinux/go-selinux/label"