From 9c581316735f78c4fec9787aa4fd8635398b4c51 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Sat, 2 Jul 2022 12:49:24 -0600 Subject: wip ls-files --- pkg/btrfs/btrfsitem/item_dir.go | 4 ++++ pkg/btrfs/btrfsitem/item_inode.go | 33 ++++++++++++++-------------- pkg/btrfs/btrfsitem/item_root.go | 46 +++++++++++++++++++-------------------- 3 files changed, 44 insertions(+), 39 deletions(-) (limited to 'pkg/btrfs/btrfsitem') diff --git a/pkg/btrfs/btrfsitem/item_dir.go b/pkg/btrfs/btrfsitem/item_dir.go index d239332..253d257 100644 --- a/pkg/btrfs/btrfsitem/item_dir.go +++ b/pkg/btrfs/btrfsitem/item_dir.go @@ -7,6 +7,10 @@ import ( "lukeshu.com/btrfs-tools/pkg/btrfs/internal" ) +// key.objectid = inode of directory containing this entry +// key.offset = +// for DIR_ITEM and XATTR_ITEM = crc32c(name) +// for DIR_INDEX = index id in the directory (starting at 2, because "." and "..") type DirList []Dir // DIR_ITEM=84 DIR_INDEX=96 XATTR_ITEM=24 func (o *DirList) UnmarshalBinary(dat []byte) (int, error) { diff --git a/pkg/btrfs/btrfsitem/item_inode.go b/pkg/btrfs/btrfsitem/item_inode.go index 3b7d577..b41f288 100644 --- a/pkg/btrfs/btrfsitem/item_inode.go +++ b/pkg/btrfs/btrfsitem/item_inode.go @@ -3,27 +3,28 @@ package btrfsitem import ( "lukeshu.com/btrfs-tools/pkg/binstruct" "lukeshu.com/btrfs-tools/pkg/btrfs/internal" + "lukeshu.com/btrfs-tools/pkg/linux" "lukeshu.com/btrfs-tools/pkg/util" ) type Inode struct { // INODE_ITEM=1 - Generation internal.Generation `bin:"off=0x0, siz=0x8"` - TransID int64 `bin:"off=0x8, siz=0x8"` - Size int64 `bin:"off=0x10, siz=0x8"` - NumBytes int64 `bin:"off=0x18, siz=0x8"` - BlockGroup int64 `bin:"off=0x20, siz=0x8"` - NLink int32 `bin:"off=0x28, siz=0x4"` - UID int32 `bin:"off=0x2C, siz=0x4"` - GID int32 `bin:"off=0x30, siz=0x4"` - Mode int32 `bin:"off=0x34, siz=0x4"` - RDev int64 `bin:"off=0x38, siz=0x8"` - Flags InodeFlags `bin:"off=0x40, siz=0x8"` - Sequence int64 `bin:"off=0x48, siz=0x8"` + Generation internal.Generation `bin:"off=0x00, siz=0x08"` + TransID int64 `bin:"off=0x08, siz=0x08"` + Size int64 `bin:"off=0x10, siz=0x08"` // stat + NumBytes int64 `bin:"off=0x18, siz=0x08"` + BlockGroup int64 `bin:"off=0x20, siz=0x08"` + NLink int32 `bin:"off=0x28, siz=0x04"` // stat + UID int32 `bin:"off=0x2C, siz=0x04"` // stat + GID int32 `bin:"off=0x30, siz=0x04"` // stat + Mode linux.StatMode `bin:"off=0x34, siz=0x04"` // stat + RDev int64 `bin:"off=0x38, siz=0x08"` // stat + Flags InodeFlags `bin:"off=0x40, siz=0x08"` // statx.stx_attributes, sorta + Sequence int64 `bin:"off=0x48, siz=0x08"` // NFS Reserved [4]int64 `bin:"off=0x50, siz=0x20"` - ATime internal.Time `bin:"off=0x70, siz=0xc"` - CTime internal.Time `bin:"off=0x7c, siz=0xc"` - MTime internal.Time `bin:"off=0x88, siz=0xc"` - OTime internal.Time `bin:"off=0x94, siz=0xc"` + ATime internal.Time `bin:"off=0x70, siz=0x0c"` // stat + CTime internal.Time `bin:"off=0x7c, siz=0x0c"` // stat + MTime internal.Time `bin:"off=0x88, siz=0x0c"` // stat + OTime internal.Time `bin:"off=0x94, siz=0x0c"` // statx.stx_btime (why is this called "otime" instead of "btime"?) binstruct.End `bin:"off=0xa0"` } diff --git a/pkg/btrfs/btrfsitem/item_root.go b/pkg/btrfs/btrfsitem/item_root.go index bdf1b7b..de0a070 100644 --- a/pkg/btrfs/btrfsitem/item_root.go +++ b/pkg/btrfs/btrfsitem/item_root.go @@ -8,31 +8,31 @@ import ( ) type Root struct { // ROOT_ITEM=132 - Inode Inode `bin:"off=0x0, siz=0xa0"` - Generation internal.Generation `bin:"off=0xa0, siz=0x8"` - RootDirID int64 `bin:"off=0xa8, siz=0x8"` - ByteNr btrfsvol.LogicalAddr `bin:"off=0xb0, siz=0x8"` - ByteLimit int64 `bin:"off=0xb8, siz=0x8"` - BytesUsed int64 `bin:"off=0xc0, siz=0x8"` - LastSnapshot int64 `bin:"off=0xc8, siz=0x8"` - Flags RootFlags `bin:"off=0xd0, siz=0x8"` - Refs int32 `bin:"off=0xd8, siz=0x4"` - DropProgress internal.Key `bin:"off=0xdc, siz=0x11"` - DropLevel uint8 `bin:"off=0xed, siz=0x1"` - Level uint8 `bin:"off=0xee, siz=0x1"` - GenerationV2 internal.Generation `bin:"off=0xef, siz=0x8"` - UUID util.UUID `bin:"off=0xF7, siz=0x10"` + Inode Inode `bin:"off=0x000, siz=0xa0"` + Generation internal.Generation `bin:"off=0x0a0, siz=0x08"` + RootDirID internal.ObjID `bin:"off=0x0a8, siz=0x08"` + ByteNr btrfsvol.LogicalAddr `bin:"off=0x0b0, siz=0x08"` + ByteLimit int64 `bin:"off=0x0b8, siz=0x08"` + BytesUsed int64 `bin:"off=0x0c0, siz=0x08"` + LastSnapshot int64 `bin:"off=0x0c8, siz=0x08"` + Flags RootFlags `bin:"off=0x0d0, siz=0x08"` + Refs int32 `bin:"off=0x0d8, siz=0x04"` + DropProgress internal.Key `bin:"off=0x0dc, siz=0x11"` + DropLevel uint8 `bin:"off=0x0ed, siz=0x01"` + Level uint8 `bin:"off=0x0ee, siz=0x01"` + GenerationV2 internal.Generation `bin:"off=0x0ef, siz=0x08"` + UUID util.UUID `bin:"off=0x0f7, siz=0x10"` ParentUUID util.UUID `bin:"off=0x107, siz=0x10"` ReceivedUUID util.UUID `bin:"off=0x117, siz=0x10"` - CTransID int64 `bin:"off=0x127, siz=0x8"` - OTransID int64 `bin:"off=0x12f, siz=0x8"` - STransID int64 `bin:"off=0x137, siz=0x8"` - RTransID int64 `bin:"off=0x13f, siz=0x8"` - CTime internal.Time `bin:"off=0x147, siz=0xc"` - OTime internal.Time `bin:"off=0x153, siz=0xc"` - STime internal.Time `bin:"off=0x15F, siz=0xc"` - RTime internal.Time `bin:"off=0x16b, siz=0xc"` - GlobalTreeID internal.ObjID `bin:"off=0x177, siz=0x8"` + CTransID int64 `bin:"off=0x127, siz=0x08"` + OTransID int64 `bin:"off=0x12f, siz=0x08"` + STransID int64 `bin:"off=0x137, siz=0x08"` + RTransID int64 `bin:"off=0x13f, siz=0x08"` + CTime internal.Time `bin:"off=0x147, siz=0x0c"` + OTime internal.Time `bin:"off=0x153, siz=0x0c"` + STime internal.Time `bin:"off=0x15f, siz=0x0c"` + RTime internal.Time `bin:"off=0x16b, siz=0x0c"` + GlobalTreeID internal.ObjID `bin:"off=0x177, siz=0x08"` Reserved [7]int64 `bin:"off=0x17f, siz=0x38"` binstruct.End `bin:"off=0x1b7"` } -- cgit v1.2.3-2-g168b