From 87e03869065f0784bf9ed76855205693128f65a4 Mon Sep 17 00:00:00 2001
From: Dean Deng <deandeng@google.com>
Date: Tue, 25 Aug 2020 21:01:45 -0700
Subject: Use new reference count utility throughout gvisor.

This uses the refs_vfs2 template in vfs2 as well as objects common to vfs1 and
vfs2. Note that vfs1-only refcounts are not replaced, since vfs1 will be deleted
soon anyway.

The following structs now use the new tool, with leak check enabled:
devpts:rootInode
fuse:inode
kernfs:Dentry
kernfs:dir
kernfs:readonlyDir
kernfs:StaticDirectory
proc:fdDirInode
proc:fdInfoDirInode
proc:subtasksInode
proc:taskInode
proc:tasksInode
vfs:FileDescription
vfs:MountNamespace
vfs:Filesystem
sys:dir
kernel:FSContext
kernel:ProcessGroup
kernel:Session
shm:Shm
mm:aioMappable
mm:SpecialMappable
transport:queue

And the following use the template, but because they currently are not leak
checked, a TODO is left instead of enabling leak check in this patch:
kernel:FDTable
tun:tunEndpoint

Updates #1486.

PiperOrigin-RevId: 328460377
---
 pkg/sentry/kernel/fd_table_unsafe.go | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'pkg/sentry/kernel/fd_table_unsafe.go')

diff --git a/pkg/sentry/kernel/fd_table_unsafe.go b/pkg/sentry/kernel/fd_table_unsafe.go
index 7fd97dc53..6b8feb107 100644
--- a/pkg/sentry/kernel/fd_table_unsafe.go
+++ b/pkg/sentry/kernel/fd_table_unsafe.go
@@ -31,6 +31,8 @@ type descriptorTable struct {
 }
 
 // init initializes the table.
+//
+// TODO(gvisor.dev/1486): Enable leak check for FDTable.
 func (f *FDTable) init() {
 	var slice []unsafe.Pointer // Empty slice.
 	atomic.StorePointer(&f.slice, unsafe.Pointer(&slice))
-- 
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