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-rw-r--r--pkg/sentry/fs/mount.go11
-rw-r--r--pkg/sentry/fs/proc/mounts.go12
2 files changed, 9 insertions, 14 deletions
diff --git a/pkg/sentry/fs/mount.go b/pkg/sentry/fs/mount.go
index a169ea4c9..9740f1fc6 100644
--- a/pkg/sentry/fs/mount.go
+++ b/pkg/sentry/fs/mount.go
@@ -110,9 +110,8 @@ type MountSource struct {
// MountSourceOperations defines filesystem specific behavior.
MountSourceOperations
- // Filesystem is the filesystem backing the mount. Can be nil if there
- // is no filesystem backing the mount.
- Filesystem Filesystem
+ // FilesystemType is the type of the filesystem backing this mount.
+ FilesystemType string
// Flags are the flags that this filesystem was mounted with.
Flags MountSourceFlags
@@ -158,10 +157,14 @@ const DefaultDirentCacheSize uint64 = 1000
// NewMountSource returns a new MountSource. Filesystem may be nil if there is no
// filesystem backing the mount.
func NewMountSource(mops MountSourceOperations, filesystem Filesystem, flags MountSourceFlags) *MountSource {
+ fsType := "none"
+ if filesystem != nil {
+ fsType = filesystem.Name()
+ }
return &MountSource{
MountSourceOperations: mops,
Flags: flags,
- Filesystem: filesystem,
+ FilesystemType: fsType,
fscache: NewDirentCache(DefaultDirentCacheSize),
children: make(map[*MountSource]struct{}),
}
diff --git a/pkg/sentry/fs/proc/mounts.go b/pkg/sentry/fs/proc/mounts.go
index 37ed30724..b5e01301f 100644
--- a/pkg/sentry/fs/proc/mounts.go
+++ b/pkg/sentry/fs/proc/mounts.go
@@ -139,11 +139,7 @@ func (mif *mountInfoFile) ReadSeqFileData(ctx context.Context, handle seqfile.Se
fmt.Fprintf(&buf, "- ")
// (9) Filesystem type.
- name := "none"
- if m.Filesystem != nil {
- name = m.Filesystem.Name()
- }
- fmt.Fprintf(&buf, "%s ", name)
+ fmt.Fprintf(&buf, "%s ", m.FilesystemType)
// (10) Mount source: filesystem-specific information or "none".
fmt.Fprintf(&buf, "none ")
@@ -190,11 +186,7 @@ func (mf *mountsFile) ReadSeqFileData(ctx context.Context, handle seqfile.SeqHan
if m.Flags.ReadOnly {
opts = "ro"
}
- name := "none"
- if m.Filesystem != nil {
- name = m.Filesystem.Name()
- }
- fmt.Fprintf(&buf, "%s %s %s %s %d %d\n", "none", mountPath, name, opts, 0, 0)
+ fmt.Fprintf(&buf, "%s %s %s %s %d %d\n", "none", mountPath, m.FilesystemType, opts, 0, 0)
})
return []seqfile.SeqData{{Buf: buf.Bytes(), Handle: (*mountsFile)(nil)}}, 0