X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/8296c0784c70660e0a7247ba000741d37bda38fd..81b8420a261a095a269a46d965b2fc0ee6ecf793:/sdk/go/arvados/fs_base.go

diff --git a/sdk/go/arvados/fs_base.go b/sdk/go/arvados/fs_base.go
index 369b4bb942..3058a7609c 100644
--- a/sdk/go/arvados/fs_base.go
+++ b/sdk/go/arvados/fs_base.go
@@ -103,6 +103,9 @@ type inode interface {
 
 	// Child() performs lookups and updates of named child nodes.
 	//
+	// (The term "child" here is used strictly. This means name is
+	// not "." or "..", and name does not contain "/".)
+	//
 	// If replace is non-nil, Child calls replace(x) where x is
 	// the current child inode with the given name. If possible,
 	// the child inode is replaced with the one returned by
@@ -449,7 +452,7 @@ func (fs *fileSystem) Rename(oldname, newname string) error {
 	// call nca.FS().Rename() instead of proceeding. Until then
 	// it's awkward for filesystems to implement their own Rename
 	// methods effectively: the only one that runs is the one on
-	// the root filesystem exposed to the caller (webdav, fuse,
+	// the root FileSystem exposed to the caller (webdav, fuse,
 	// etc).
 
 	// When acquiring locks on multiple inodes, avoid deadlock by
@@ -586,3 +589,7 @@ func rlookup(start inode, path string) (node inode, err error) {
 	}
 	return
 }
+
+func permittedName(name string) bool {
+	return name != "" && name != "." && name != ".." && !strings.Contains(name, "/")
+}