From 4ec351633206fdbd191bc3aef29a007925a731cc Mon Sep 17 00:00:00 2001
From: Nicolas Lacasse <nlacasse@google.com>
Date: Thu, 23 Jul 2020 17:40:46 -0700
Subject: Implement get/set_robust_list.

PiperOrigin-RevId: 322904430
---
 pkg/abi/linux/futex.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'pkg/abi/linux')

diff --git a/pkg/abi/linux/futex.go b/pkg/abi/linux/futex.go
index 08bfde3b5..8138088a6 100644
--- a/pkg/abi/linux/futex.go
+++ b/pkg/abi/linux/futex.go
@@ -60,3 +60,21 @@ const (
 	FUTEX_WAITERS    = 0x80000000
 	FUTEX_OWNER_DIED = 0x40000000
 )
+
+// FUTEX_BITSET_MATCH_ANY has all bits set.
+const FUTEX_BITSET_MATCH_ANY = 0xffffffff
+
+// ROBUST_LIST_LIMIT protects against a deliberately circular list.
+const ROBUST_LIST_LIMIT = 2048
+
+// RobustListHead corresponds to Linux's struct robust_list_head.
+//
+// +marshal
+type RobustListHead struct {
+	List          uint64
+	FutexOffset   uint64
+	ListOpPending uint64
+}
+
+// SizeOfRobustListHead is the size of a RobustListHead struct.
+var SizeOfRobustListHead = (*RobustListHead)(nil).SizeBytes()
-- 
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