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// Copyright (C) 2022 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package internal
import (
"fmt"
"time"
"git.lukeshu.com/btrfs-progs-ng/lib/binstruct"
"git.lukeshu.com/btrfs-progs-ng/lib/containers"
)
type Generation uint64
type Key struct {
ObjectID ObjID `bin:"off=0x0, siz=0x8"` // Each tree has its own set of Object IDs.
ItemType ItemType `bin:"off=0x8, siz=0x1"`
Offset uint64 `bin:"off=0x9, siz=0x8"` // The meaning depends on the item type.
binstruct.End `bin:"off=0x11"`
}
func (k Key) String() string {
return fmt.Sprintf("{%v %v %v}", k.ObjectID, k.ItemType, k.Offset)
}
func (a Key) Cmp(b Key) int {
if d := containers.CmpUint(a.ObjectID, b.ObjectID); d != 0 {
return d
}
if d := containers.CmpUint(a.ItemType, b.ItemType); d != 0 {
return d
}
return containers.CmpUint(a.Offset, b.Offset)
}
type Time struct {
Sec int64 `bin:"off=0x0, siz=0x8"` // Number of seconds since 1970-01-01T00:00:00Z.
NSec uint32 `bin:"off=0x8, siz=0x4"` // Number of nanoseconds since the beginning of the second.
binstruct.End `bin:"off=0xc"`
}
func (t Time) ToStd() time.Time {
return time.Unix(t.Sec, int64(t.NSec))
}
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