From 21a14e9532365fc5eb51a5796ab66cf7f007ede3 Mon Sep 17 00:00:00 2001
From: Jamie Liu <jamieliu@google.com>
Date: Fri, 20 Dec 2019 16:43:34 -0800
Subject: Add vfs.Dentry.Children().
PiperOrigin-RevId: 286660774
---
pkg/sentry/vfs/dentry.go | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/pkg/sentry/vfs/dentry.go b/pkg/sentry/vfs/dentry.go
index 40f4c1d09..6209eb053 100644
--- a/pkg/sentry/vfs/dentry.go
+++ b/pkg/sentry/vfs/dentry.go
@@ -85,12 +85,12 @@ type Dentry struct {
// mounts is accessed using atomic memory operations.
mounts uint32
- // mu synchronizes disowning and mounting over this Dentry.
- mu sync.Mutex
-
// children are child Dentries.
children map[string]*Dentry
+ // mu synchronizes disowning and mounting over this Dentry.
+ mu sync.Mutex
+
// impl is the DentryImpl associated with this Dentry. impl is immutable.
// This should be the last field in Dentry.
impl DentryImpl
@@ -199,6 +199,18 @@ func (d *Dentry) HasChildren() bool {
return len(d.children) != 0
}
+// Children returns a map containing all of d's children.
+func (d *Dentry) Children() map[string]*Dentry {
+ if !d.HasChildren() {
+ return nil
+ }
+ m := make(map[string]*Dentry)
+ for name, child := range d.children {
+ m[name] = child
+ }
+ return m
+}
+
// InsertChild makes child a child of d with the given name.
//
// InsertChild is a mutator of d and child.
--
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