Merge pull request #5676 from kolyshkin/volume-flags-alt

Fix/improve pkg/storage.InitFSMounts

2 files changed, 13 insertions, 69 deletions

diff --git a/pkg/spec/spec.go b/pkg/spec/spec.go
index 4732af757..5de07fc28 100644
--- a/pkg/spec/spec.go
+++ b/pkg/spec/spec.go
@@ -381,11 +381,9 @@ func (config *CreateConfig) createConfigToOCISpec(runtime *libpod.Runtime, userM
 	// BIND MOUNTS
 	configSpec.Mounts = SupercedeUserMounts(userMounts, configSpec.Mounts)
 	// Process mounts to ensure correct options
-	finalMounts, err := InitFSMounts(configSpec.Mounts)
-	if err != nil {
+	if err := InitFSMounts(configSpec.Mounts); err != nil {
 		return nil, err
 	}
-	configSpec.Mounts = finalMounts
 
 	// BLOCK IO
 	blkio, err := config.CreateBlockIO()
diff --git a/pkg/spec/storage.go b/pkg/spec/storage.go
index b0687b4c2..68a84d638 100644
--- a/pkg/spec/storage.go
+++ b/pkg/spec/storage.go
@@ -10,7 +10,6 @@ import (
 	"github.com/containers/buildah/pkg/parse"
 	"github.com/containers/libpod/libpod"
 	"github.com/containers/libpod/pkg/util"
-	pmount "github.com/containers/storage/pkg/mount"
 	spec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -855,75 +854,22 @@ func SupercedeUserMounts(mounts []spec.Mount, configMount []spec.Mount) []spec.M
 }
 
 // Ensure mount options on all mounts are correct
-func InitFSMounts(inputMounts []spec.Mount) ([]spec.Mount, error) {
-	// We need to look up mounts so we can figure out the proper mount flags
-	// to apply.
-	systemMounts, err := pmount.GetMounts()
-	if err != nil {
-		return nil, errors.Wrapf(err, "error retrieving system mounts to look up mount options")
-	}
-
-	// TODO: We probably don't need to re-build the mounts array
-	var mounts []spec.Mount
-	for _, m := range inputMounts {
-		if m.Type == TypeBind {
-			baseMnt, err := findMount(m.Destination, systemMounts)
+func InitFSMounts(mounts []spec.Mount) error {
+	for i, m := range mounts {
+		switch {
+		case m.Type == TypeBind:
+			opts, err := util.ProcessOptions(m.Options, false, m.Source)
 			if err != nil {
-				return nil, errors.Wrapf(err, "error looking up mountpoint for mount %s", m.Destination)
-			}
-			var noexec, nosuid, nodev bool
-			for _, baseOpt := range strings.Split(baseMnt.Opts, ",") {
-				switch baseOpt {
-				case "noexec":
-					noexec = true
-				case "nosuid":
-					nosuid = true
-				case "nodev":
-					nodev = true
-				}
+				return err
 			}
-
-			defaultMountOpts := new(util.DefaultMountOptions)
-			defaultMountOpts.Noexec = noexec
-			defaultMountOpts.Nosuid = nosuid
-			defaultMountOpts.Nodev = nodev
-
-			opts, err := util.ProcessOptions(m.Options, false, defaultMountOpts)
+			mounts[i].Options = opts
+		case m.Type == TypeTmpfs && filepath.Clean(m.Destination) != "/dev":
+			opts, err := util.ProcessOptions(m.Options, true, "")
 			if err != nil {
-				return nil, err
+				return err
 			}
-			m.Options = opts
-		}
-		if m.Type == TypeTmpfs && filepath.Clean(m.Destination) != "/dev" {
-			opts, err := util.ProcessOptions(m.Options, true, nil)
-			if err != nil {
-				return nil, err
-			}
-			m.Options = opts
-		}
-
-		mounts = append(mounts, m)
-	}
-	return mounts, nil
-}
-
-// TODO: We could make this a bit faster by building a tree of the mountpoints
-// and traversing it to identify the correct mount.
-func findMount(target string, mounts []*pmount.Info) (*pmount.Info, error) {
-	var err error
-	target, err = filepath.Abs(target)
-	if err != nil {
-		return nil, errors.Wrapf(err, "cannot resolve %s", target)
-	}
-	var bestSoFar *pmount.Info
-	for _, i := range mounts {
-		if bestSoFar != nil && len(bestSoFar.Mountpoint) > len(i.Mountpoint) {
-			// Won't be better than what we have already found
-			continue
-		}
-		if strings.HasPrefix(target, i.Mountpoint) {
-			bestSoFar = i
+			mounts[i].Options = opts
 		}
 	}
-	return bestSoFar, nil
+	return nil
 }