diff options
Diffstat (limited to 'pkg/sentry/fsimpl/tmpfs/filesystem.go')
| -rw-r--r-- | pkg/sentry/fsimpl/tmpfs/filesystem.go | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/pkg/sentry/fsimpl/tmpfs/filesystem.go b/pkg/sentry/fsimpl/tmpfs/filesystem.go index 99277093e..1362c1602 100644 --- a/pkg/sentry/fsimpl/tmpfs/filesystem.go +++ b/pkg/sentry/fsimpl/tmpfs/filesystem.go @@ -865,8 +865,16 @@ func (fs *filesystem) PrependPath(ctx context.Context, vfsroot, vd vfs.VirtualDe } if d.parent == nil { if d.name != "" { - // This must be an anonymous memfd file. + // This file must have been created by + // newUnlinkedRegularFileDescription(). In Linux, + // mm/shmem.c:__shmem_file_setup() => + // fs/file_table.c:alloc_file_pseudo() sets the created + // dentry's dentry_operations to anon_ops, for which d_dname == + // simple_dname. fs/d_path.c:simple_dname() defines the + // dentry's pathname to be its name, prefixed with "/" and + // suffixed with " (deleted)". b.PrependComponent("/" + d.name) + b.AppendString(" (deleted)") return vfs.PrependPathSyntheticError{} } return vfs.PrependPathAtNonMountRootError{} |