diff options
| author | Luke Shumaker <lukeshu@lukeshu.com> | 2023-03-15 21:38:56 -0600 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@lukeshu.com> | 2023-03-15 21:41:00 -0600 |
| commit | 0cc16b8d1da61c0bfb8743c8b68888b0ba73d4bb (patch) | |
| tree | 8a210fcb602af13fc4175338fc0bda2101838e92 | |
| parent | c42e8ea5d77a39d096d97600359bd91657da2f05 (diff) | |
btrfsprim: Add "max" constants for ObjID, ItemType, and offset
| -rw-r--r-- | lib/btrfs/Makefile | 7 | ||||
| -rw-r--r-- | lib/btrfs/btrfsprim/itemtype.go | 7 | ||||
| -rw-r--r-- | lib/btrfs/btrfsprim/key.go | 2 | ||||
| -rw-r--r-- | lib/btrfs/btrfsprim/objid.go | 3 |
4 files changed, 17 insertions, 2 deletions
diff --git a/lib/btrfs/Makefile b/lib/btrfs/Makefile index b98a1b7..2c70363 100644 --- a/lib/btrfs/Makefile +++ b/lib/btrfs/Makefile @@ -74,10 +74,15 @@ btrfsprim/itemtype.go: btrfsitem/items.txt $(MAKEFILE_LIST) echo '// Code generated by Make. DO NOT EDIT.'; \ echo; \ echo 'package $(@D)'; \ - echo 'import "fmt"'; \ + echo 'import ('; \ + echo ' "fmt"'; \ + echo ' "math"'; \ + echo ')'; \ echo 'type ItemType uint8'; \ echo 'const ('; \ sed -E 's,(.*)=([^:]*)(:.*)? (trivial|complex) (.*),\1_KEY ItemType=\2,' $< | uniq; \ + echo; \ + echo 'MAX_KEY ItemType = math.MaxUint8'; \ echo ')'; \ echo 'func (t ItemType) String() string {'; \ echo ' switch t {'; \ diff --git a/lib/btrfs/btrfsprim/itemtype.go b/lib/btrfs/btrfsprim/itemtype.go index f33179a..682fecd 100644 --- a/lib/btrfs/btrfsprim/itemtype.go +++ b/lib/btrfs/btrfsprim/itemtype.go @@ -2,7 +2,10 @@ package btrfsprim -import "fmt" +import ( + "fmt" + "math" +) type ItemType uint8 @@ -39,6 +42,8 @@ const ( UUID_RECEIVED_SUBVOL_KEY ItemType = 252 UUID_SUBVOL_KEY ItemType = 251 XATTR_ITEM_KEY ItemType = 24 + + MAX_KEY ItemType = math.MaxUint8 ) func (t ItemType) String() string { diff --git a/lib/btrfs/btrfsprim/key.go b/lib/btrfs/btrfsprim/key.go index 55f7c05..7a3cc5c 100644 --- a/lib/btrfs/btrfsprim/key.go +++ b/lib/btrfs/btrfsprim/key.go @@ -19,6 +19,8 @@ type Key struct { binstruct.End `bin:"off=0x11"` } +const MaxOffset uint64 = math.MaxUint64 + // mimics print-tree.c:btrfs_print_key() func (key Key) Format(tree ObjID) string { switch tree { diff --git a/lib/btrfs/btrfsprim/objid.go b/lib/btrfs/btrfsprim/objid.go index 1aea030..f364957 100644 --- a/lib/btrfs/btrfsprim/objid.go +++ b/lib/btrfs/btrfsprim/objid.go @@ -6,6 +6,7 @@ package btrfsprim import ( "fmt" + "math" ) type ObjID uint64 @@ -52,6 +53,8 @@ const ( // ??? EMPTY_SUBVOL_DIR_OBJECTID ObjID = 2 + + MAX_OBJECTID ObjID = math.MaxUint64 ) var ( |