19088: Export collection/project properties as x-amz-meta tags.

[arvados.git] / sdk / go / arvados / fs_base.go

diff --git a/sdk/go/arvados/fs_base.go b/sdk/go/arvados/fs_base.go
index ce9253ab3d4f5d5447273cfe02edca716afc52fd..0cde825b38834fffa945809c4609184b77923785 100644 (file)
--- a/sdk/go/arvados/fs_base.go
+++ b/sdk/go/arvados/fs_base.go
@@ -234,6 +234,15 @@ type fileinfo struct {
        mode    os.FileMode
        size    int64
        modTime time.Time
+       // Source data structure: *Collection, *Group, or
+       // nil. Currently populated only for project dirs and
+       // top-level collection dirs; *not* populated for
+       // /by_id/{uuid} dirs (only subdirs below that). Does not stay
+       // up to date with upstream changes.
+       //
+       // Intended to support keep-web's properties-as-s3-metadata
+       // feature (https://dev.arvados.org/issues/19088).
+       sys interface{}
 }
 
 // Name implements os.FileInfo.
@@ -261,9 +270,9 @@ func (fi fileinfo) Size() int64 {
        return fi.size
 }
 
-// Sys implements os.FileInfo.
+// Sys implements os.FileInfo. See comment in fileinfo struct.
 func (fi fileinfo) Sys() interface{} {
-       return nil
+       return fi.sys
 }
 
 type nullnode struct{}