From 79cb12dde9352331c15724b7d0892fd4ce5ea342 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Sun, 12 Feb 2023 13:14:43 -0700
Subject: btrfsitem, btrfsinspect/print_tree: Implement the QGroup types

---
 lib/btrfs/btrfsitem/item_qgrouplimit.go | 46 +++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 lib/btrfs/btrfsitem/item_qgrouplimit.go

(limited to 'lib/btrfs/btrfsitem/item_qgrouplimit.go')

diff --git a/lib/btrfs/btrfsitem/item_qgrouplimit.go b/lib/btrfs/btrfsitem/item_qgrouplimit.go
new file mode 100644
index 0000000..9d1e05f
--- /dev/null
+++ b/lib/btrfs/btrfsitem/item_qgrouplimit.go
@@ -0,0 +1,46 @@
+// Copyright (C) 2023  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package btrfsitem
+
+import (
+	"git.lukeshu.com/btrfs-progs-ng/lib/binstruct"
+	"git.lukeshu.com/btrfs-progs-ng/lib/fmtutil"
+)
+
+type QGroupLimitFlags uint64
+
+const (
+	QGroupLimitFlagMaxRfer = 1 << iota
+	QGroupLimitFlagMaxExcl
+	QGroupLimitFlagRsvRfer
+	QGroupLimitFlagRsvExcl
+	QGroupLimitFlagRferCmpr
+	QGroupLimitFlagExclCmpr
+)
+
+var qgroupLimitFlagNames = []string{
+	"MAX_RFER",
+	"MAX_EXCL",
+	"RSV_RFER",
+	"RSV_EXCL",
+	"RFER_CMPR",
+	"EXCL_CMPR",
+}
+
+func (f QGroupLimitFlags) Has(req QGroupLimitFlags) bool { return f&req == req }
+func (f QGroupLimitFlags) String() string {
+	return fmtutil.BitfieldString(f, qgroupLimitFlagNames, fmtutil.HexNone)
+}
+
+// key.objectid = 0
+// key.offset = ID of the qgroup
+type QGroupLimit struct { // QGROUP_LIMIT=244
+	Flags         QGroupLimitFlags `bin:"off=0, siz=8"`
+	MaxReferenced uint64           `bin:"off=8, siz=8"`
+	MaxExclusive  uint64           `bin:"off=16, siz=8"`
+	RsvReferenced uint64           `bin:"off=24, siz=8"`
+	RsvExclusive  uint64           `bin:"off=32, siz=8"`
+	binstruct.End `bin:"off=40"`
+}
-- 
cgit v1.2.3-2-g168b