objids and gen

5 files changed, 133 insertions, 75 deletions

diff --git a/pkg/btrfs/Makefile b/pkg/btrfs/Makefile
index b29e033..33d3793 100644
--- a/pkg/btrfs/Makefile
+++ b/pkg/btrfs/Makefile
@@ -8,6 +8,8 @@ files += btrfsitem/items.txt
 
 btrfsitem/items_gen.go: btrfsitem/items.txt $(MAKEFILE_LIST)
 	{ \
+	  echo '// Code generated by Make.  DO NOT EDIT.'; \
+	  echo; \
 	  echo 'package $(@D)'; \
 	  echo 'import ('; \
 	  echo   '"reflect"'; \
@@ -26,6 +28,8 @@ files += btrfsitem/items_gen.go
 
 internal/itemtype.go: btrfsitem/items.txt $(MAKEFILE_LIST)
 	{ \
+	  echo '// Code generated by Make.  DO NOT EDIT.'; \
+	  echo; \
 	  echo 'package $(@D)'; \
 	  echo 'import "fmt"'; \
 	  echo 'type ItemType uint8'; \
@@ -44,6 +48,20 @@ internal/itemtype.go: btrfsitem/items.txt $(MAKEFILE_LIST)
 	} | gofmt >$@
 files += internal/itemtype.go
 
+internal_objid.go: internal/objid.go $(MAKEFILE_LIST)
+	{ \
+	  echo '// Code generated by Make.  DO NOT EDIT.'; \
+	  echo; \
+	  echo 'package btrfs'; \
+	  echo 'import ('; \
+	  echo   '"lukeshu.com/btrfs-tools/pkg/btrfs/internal"'; \
+	  echo ')'; \
+	  echo 'const('; \
+	  sed -En 's/^\s*(\S*_OBJECTID)\s*=.*/\1 = internal.\1/p' <$<; \
+	  echo ')'; \
+	} | gofmt >$@
+files += internal_objid.go
+
 all: $(files)
 .PHONY: all
 
diff --git a/pkg/btrfs/btrfsitem/items_gen.go b/pkg/btrfs/btrfsitem/items_gen.go
index 03faf8a..fc894d1 100644
--- a/pkg/btrfs/btrfsitem/items_gen.go
+++ b/pkg/btrfs/btrfsitem/items_gen.go
@@ -1,3 +1,5 @@
+// Code generated by Make.  DO NOT EDIT.
+
 package btrfsitem
 
 import (
diff --git a/pkg/btrfs/internal/itemtype.go b/pkg/btrfs/internal/itemtype.go
index 90fb2a7..5a8c10f 100644
--- a/pkg/btrfs/internal/itemtype.go
+++ b/pkg/btrfs/internal/itemtype.go
@@ -1,3 +1,5 @@
+// Code generated by Make.  DO NOT EDIT.
+
 package internal
 
 import "fmt"
diff --git a/pkg/btrfs/internal/objid.go b/pkg/btrfs/internal/objid.go
index c3b25f3..a53d61f 100644
--- a/pkg/btrfs/internal/objid.go
+++ b/pkg/btrfs/internal/objid.go
@@ -10,52 +10,52 @@ type ObjID uint64
 
 const (
 	// The IDs of the various trees
-	BTRFS_ROOT_TREE_OBJECTID        = ObjID(1) // holds pointers to all of the tree roots
-	BTRFS_EXTENT_TREE_OBJECTID      = ObjID(2) // stores information about which extents are in use, and reference counts
-	BTRFS_CHUNK_TREE_OBJECTID       = ObjID(3) // chunk tree stores translations from logical -> physical block numbering
-	BTRFS_DEV_TREE_OBJECTID         = ObjID(4) // stores info about which areas of a given device are in use; one per device
-	BTRFS_FS_TREE_OBJECTID          = ObjID(5) // one per subvolume, storing files and directories
-	BTRFS_ROOT_TREE_DIR_OBJECTID    = ObjID(6) // directory objectid inside the root tree
-	BTRFS_CSUM_TREE_OBJECTID        = ObjID(7) // holds checksums of all the data extents
-	BTRFS_QUOTA_TREE_OBJECTID       = ObjID(8)
-	BTRFS_UUID_TREE_OBJECTID        = ObjID(9)  // for storing items that use the BTRFS_UUID_*_KEY
-	BTRFS_FREE_SPACE_TREE_OBJECTID  = ObjID(10) // tracks free space in block groups.
-	BTRFS_BLOCK_GROUP_TREE_OBJECTID = ObjID(11) // hold the block group items.
+	ROOT_TREE_OBJECTID        = ObjID(1) // holds pointers to all of the tree roots
+	EXTENT_TREE_OBJECTID      = ObjID(2) // stores information about which extents are in use, and reference counts
+	CHUNK_TREE_OBJECTID       = ObjID(3) // chunk tree stores translations from logical -> physical block numbering
+	DEV_TREE_OBJECTID         = ObjID(4) // stores info about which areas of a given device are in use; one per device
+	FS_TREE_OBJECTID          = ObjID(5) // one per subvolume, storing files and directories
+	ROOT_TREE_DIR_OBJECTID    = ObjID(6) // directory objectid inside the root tree
+	CSUM_TREE_OBJECTID        = ObjID(7) // holds checksums of all the data extents
+	QUOTA_TREE_OBJECTID       = ObjID(8)
+	UUID_TREE_OBJECTID        = ObjID(9)  // for storing items that use the UUID_*_KEY
+	FREE_SPACE_TREE_OBJECTID  = ObjID(10) // tracks free space in block groups.
+	BLOCK_GROUP_TREE_OBJECTID = ObjID(11) // hold the block group items.
 
 	// Objects in the DEV_TREE
-	BTRFS_DEV_STATS_OBJECTID = ObjID(0) // device stats in the device tree
+	DEV_STATS_OBJECTID = ObjID(0) // device stats in the device tree
 
 	// ???
-	BTRFS_BALANCE_OBJECTID         = ObjID(util.MaxUint64pp - 4) // for storing balance parameters in the root tree
-	BTRFS_ORPHAN_OBJECTID          = ObjID(util.MaxUint64pp - 5) // orphan objectid for tracking unlinked/truncated files
-	BTRFS_TREE_LOG_OBJECTID        = ObjID(util.MaxUint64pp - 6) // does write ahead logging to speed up fsyncs
-	BTRFS_TREE_LOG_FIXUP_OBJECTID  = ObjID(util.MaxUint64pp - 7)
-	BTRFS_TREE_RELOC_OBJECTID      = ObjID(util.MaxUint64pp - 8) // space balancing
-	BTRFS_DATA_RELOC_TREE_OBJECTID = ObjID(util.MaxUint64pp - 9)
-	BTRFS_EXTENT_CSUM_OBJECTID     = ObjID(util.MaxUint64pp - 10) // extent checksums all have this objectid
-	BTRFS_FREE_SPACE_OBJECTID      = ObjID(util.MaxUint64pp - 11) // For storing free space cache
-	BTRFS_FREE_INO_OBJECTID        = ObjID(util.MaxUint64pp - 12) // stores the inode number for the free-ino cache
-
-	BTRFS_MULTIPLE_OBJECTIDS = ObjID(util.MaxUint64pp - 255) // dummy objectid represents multiple objectids
+	BALANCE_OBJECTID         = ObjID(util.MaxUint64pp - 4) // for storing balance parameters in the root tree
+	ORPHAN_OBJECTID          = ObjID(util.MaxUint64pp - 5) // orphan objectid for tracking unlinked/truncated files
+	TREE_LOG_OBJECTID        = ObjID(util.MaxUint64pp - 6) // does write ahead logging to speed up fsyncs
+	TREE_LOG_FIXUP_OBJECTID  = ObjID(util.MaxUint64pp - 7)
+	TREE_RELOC_OBJECTID      = ObjID(util.MaxUint64pp - 8) // space balancing
+	DATA_RELOC_TREE_OBJECTID = ObjID(util.MaxUint64pp - 9)
+	EXTENT_CSUM_OBJECTID     = ObjID(util.MaxUint64pp - 10) // extent checksums all have this objectid
+	FREE_SPACE_OBJECTID      = ObjID(util.MaxUint64pp - 11) // For storing free space cache
+	FREE_INO_OBJECTID        = ObjID(util.MaxUint64pp - 12) // stores the inode number for the free-ino cache
+
+	MULTIPLE_OBJECTIDS = ObjID(util.MaxUint64pp - 255) // dummy objectid represents multiple objectids
 
 	// All files have objectids in this range.
-	BTRFS_FIRST_FREE_OBJECTID = ObjID(256)
-	BTRFS_LAST_FREE_OBJECTID  = ObjID(util.MaxUint64pp - 256)
+	FIRST_FREE_OBJECTID = ObjID(256)
+	LAST_FREE_OBJECTID  = ObjID(util.MaxUint64pp - 256)
 
-	BTRFS_FIRST_CHUNK_TREE_OBJECTID = ObjID(256)
+	FIRST_CHUNK_TREE_OBJECTID = ObjID(256)
 
 	// Objects in the CHUNK_TREE
-	BTRFS_DEV_ITEMS_OBJECTID = ObjID(1)
+	DEV_ITEMS_OBJECTID = ObjID(1)
 
 	// ???
-	BTRFS_EMPTY_SUBVOL_DIR_OBJECTID = ObjID(2)
+	EMPTY_SUBVOL_DIR_OBJECTID = ObjID(2)
 )
 
 func (id ObjID) Format(typ ItemType) string {
 	switch typ {
 	case PERSISTENT_ITEM_KEY:
 		names := map[ObjID]string{
-			BTRFS_DEV_STATS_OBJECTID: "DEV_STATS",
+			DEV_STATS_OBJECTID: "DEV_STATS",
 		}
 		if name, ok := names[id]; ok {
 			return name
@@ -71,18 +71,18 @@ func (id ObjID) Format(typ ItemType) string {
 		return fmt.Sprintf("0x%016x", uint64(id))
 	case DEV_ITEM_KEY:
 		names := map[ObjID]string{
-			BTRFS_BALANCE_OBJECTID:         "BALANCE",
-			BTRFS_ORPHAN_OBJECTID:          "ORPHAN",
-			BTRFS_TREE_LOG_OBJECTID:        "TREE_LOG",
-			BTRFS_TREE_LOG_FIXUP_OBJECTID:  "TREE_LOG_FIXUP",
-			BTRFS_TREE_RELOC_OBJECTID:      "TREE_RELOC",
-			BTRFS_DATA_RELOC_TREE_OBJECTID: "DATA_RELOC_TREE",
-			BTRFS_EXTENT_CSUM_OBJECTID:     "EXTENT_CSUM",
-			BTRFS_FREE_SPACE_OBJECTID:      "FREE_SPACE",
-			BTRFS_FREE_INO_OBJECTID:        "FREE_INO",
-			BTRFS_MULTIPLE_OBJECTIDS:       "MULTIPLE",
-
-			BTRFS_DEV_ITEMS_OBJECTID: "DEV_ITEMS",
+			BALANCE_OBJECTID:         "BALANCE",
+			ORPHAN_OBJECTID:          "ORPHAN",
+			TREE_LOG_OBJECTID:        "TREE_LOG",
+			TREE_LOG_FIXUP_OBJECTID:  "TREE_LOG_FIXUP",
+			TREE_RELOC_OBJECTID:      "TREE_RELOC",
+			DATA_RELOC_TREE_OBJECTID: "DATA_RELOC_TREE",
+			EXTENT_CSUM_OBJECTID:     "EXTENT_CSUM",
+			FREE_SPACE_OBJECTID:      "FREE_SPACE",
+			FREE_INO_OBJECTID:        "FREE_INO",
+			MULTIPLE_OBJECTIDS:       "MULTIPLE",
+
+			DEV_ITEMS_OBJECTID: "DEV_ITEMS",
 		}
 		if name, ok := names[id]; ok {
 			return name
@@ -90,18 +90,18 @@ func (id ObjID) Format(typ ItemType) string {
 		return fmt.Sprintf("%d", int64(id))
 	case CHUNK_ITEM_KEY:
 		names := map[ObjID]string{
-			BTRFS_BALANCE_OBJECTID:         "BALANCE",
-			BTRFS_ORPHAN_OBJECTID:          "ORPHAN",
-			BTRFS_TREE_LOG_OBJECTID:        "TREE_LOG",
-			BTRFS_TREE_LOG_FIXUP_OBJECTID:  "TREE_LOG_FIXUP",
-			BTRFS_TREE_RELOC_OBJECTID:      "TREE_RELOC",
-			BTRFS_DATA_RELOC_TREE_OBJECTID: "DATA_RELOC_TREE",
-			BTRFS_EXTENT_CSUM_OBJECTID:     "EXTENT_CSUM",
-			BTRFS_FREE_SPACE_OBJECTID:      "FREE_SPACE",
-			BTRFS_FREE_INO_OBJECTID:        "FREE_INO",
-			BTRFS_MULTIPLE_OBJECTIDS:       "MULTIPLE",
-
-			BTRFS_FIRST_CHUNK_TREE_OBJECTID: "FIRST_CHUNK_TREE",
+			BALANCE_OBJECTID:         "BALANCE",
+			ORPHAN_OBJECTID:          "ORPHAN",
+			TREE_LOG_OBJECTID:        "TREE_LOG",
+			TREE_LOG_FIXUP_OBJECTID:  "TREE_LOG_FIXUP",
+			TREE_RELOC_OBJECTID:      "TREE_RELOC",
+			DATA_RELOC_TREE_OBJECTID: "DATA_RELOC_TREE",
+			EXTENT_CSUM_OBJECTID:     "EXTENT_CSUM",
+			FREE_SPACE_OBJECTID:      "FREE_SPACE",
+			FREE_INO_OBJECTID:        "FREE_INO",
+			MULTIPLE_OBJECTIDS:       "MULTIPLE",
+
+			FIRST_CHUNK_TREE_OBJECTID: "FIRST_CHUNK_TREE",
 		}
 		if name, ok := names[id]; ok {
 			return name
@@ -109,28 +109,28 @@ func (id ObjID) Format(typ ItemType) string {
 		return fmt.Sprintf("%d", int64(id))
 	default:
 		names := map[ObjID]string{
-			BTRFS_BALANCE_OBJECTID:         "BALANCE",
-			BTRFS_ORPHAN_OBJECTID:          "ORPHAN",
-			BTRFS_TREE_LOG_OBJECTID:        "TREE_LOG",
-			BTRFS_TREE_LOG_FIXUP_OBJECTID:  "TREE_LOG_FIXUP",
-			BTRFS_TREE_RELOC_OBJECTID:      "TREE_RELOC",
-			BTRFS_DATA_RELOC_TREE_OBJECTID: "DATA_RELOC_TREE",
-			BTRFS_EXTENT_CSUM_OBJECTID:     "EXTENT_CSUM",
-			BTRFS_FREE_SPACE_OBJECTID:      "FREE_SPACE",
-			BTRFS_FREE_INO_OBJECTID:        "FREE_INO",
-			BTRFS_MULTIPLE_OBJECTIDS:       "MULTIPLE",
-
-			BTRFS_ROOT_TREE_OBJECTID:        "ROOT_TREE",
-			BTRFS_EXTENT_TREE_OBJECTID:      "EXTENT_TREE",
-			BTRFS_CHUNK_TREE_OBJECTID:       "CHUNK_TREE",
-			BTRFS_DEV_TREE_OBJECTID:         "DEV_TREE",
-			BTRFS_FS_TREE_OBJECTID:          "FS_TREE",
-			BTRFS_ROOT_TREE_DIR_OBJECTID:    "ROOT_TREE_DIR",
-			BTRFS_CSUM_TREE_OBJECTID:        "CSUM_TREE",
-			BTRFS_QUOTA_TREE_OBJECTID:       "QUOTA_TREE",
-			BTRFS_UUID_TREE_OBJECTID:        "UUID_TREE",
-			BTRFS_FREE_SPACE_TREE_OBJECTID:  "FREE_SPACE_TREE",
-			BTRFS_BLOCK_GROUP_TREE_OBJECTID: "BLOCK_GROUP_TREE",
+			BALANCE_OBJECTID:         "BALANCE",
+			ORPHAN_OBJECTID:          "ORPHAN",
+			TREE_LOG_OBJECTID:        "TREE_LOG",
+			TREE_LOG_FIXUP_OBJECTID:  "TREE_LOG_FIXUP",
+			TREE_RELOC_OBJECTID:      "TREE_RELOC",
+			DATA_RELOC_TREE_OBJECTID: "DATA_RELOC_TREE",
+			EXTENT_CSUM_OBJECTID:     "EXTENT_CSUM",
+			FREE_SPACE_OBJECTID:      "FREE_SPACE",
+			FREE_INO_OBJECTID:        "FREE_INO",
+			MULTIPLE_OBJECTIDS:       "MULTIPLE",
+
+			ROOT_TREE_OBJECTID:        "ROOT_TREE",
+			EXTENT_TREE_OBJECTID:      "EXTENT_TREE",
+			CHUNK_TREE_OBJECTID:       "CHUNK_TREE",
+			DEV_TREE_OBJECTID:         "DEV_TREE",
+			FS_TREE_OBJECTID:          "FS_TREE",
+			ROOT_TREE_DIR_OBJECTID:    "ROOT_TREE_DIR",
+			CSUM_TREE_OBJECTID:        "CSUM_TREE",
+			QUOTA_TREE_OBJECTID:       "QUOTA_TREE",
+			UUID_TREE_OBJECTID:        "UUID_TREE",
+			FREE_SPACE_TREE_OBJECTID:  "FREE_SPACE_TREE",
+			BLOCK_GROUP_TREE_OBJECTID: "BLOCK_GROUP_TREE",
 		}
 		if name, ok := names[id]; ok {
 			return name
diff --git a/pkg/btrfs/internal_objid.go b/pkg/btrfs/internal_objid.go
new file mode 100644
index 0000000..c101eb6
--- /dev/null
+++ b/pkg/btrfs/internal_objid.go
@@ -0,0 +1,36 @@
+// Code generated by Make.  DO NOT EDIT.
+
+package btrfs
+
+import (
+	"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
+)
+
+const (
+	ROOT_TREE_OBJECTID        = internal.ROOT_TREE_OBJECTID
+	EXTENT_TREE_OBJECTID      = internal.EXTENT_TREE_OBJECTID
+	CHUNK_TREE_OBJECTID       = internal.CHUNK_TREE_OBJECTID
+	DEV_TREE_OBJECTID         = internal.DEV_TREE_OBJECTID
+	FS_TREE_OBJECTID          = internal.FS_TREE_OBJECTID
+	ROOT_TREE_DIR_OBJECTID    = internal.ROOT_TREE_DIR_OBJECTID
+	CSUM_TREE_OBJECTID        = internal.CSUM_TREE_OBJECTID
+	QUOTA_TREE_OBJECTID       = internal.QUOTA_TREE_OBJECTID
+	UUID_TREE_OBJECTID        = internal.UUID_TREE_OBJECTID
+	FREE_SPACE_TREE_OBJECTID  = internal.FREE_SPACE_TREE_OBJECTID
+	BLOCK_GROUP_TREE_OBJECTID = internal.BLOCK_GROUP_TREE_OBJECTID
+	DEV_STATS_OBJECTID        = internal.DEV_STATS_OBJECTID
+	BALANCE_OBJECTID          = internal.BALANCE_OBJECTID
+	ORPHAN_OBJECTID           = internal.ORPHAN_OBJECTID
+	TREE_LOG_OBJECTID         = internal.TREE_LOG_OBJECTID
+	TREE_LOG_FIXUP_OBJECTID   = internal.TREE_LOG_FIXUP_OBJECTID
+	TREE_RELOC_OBJECTID       = internal.TREE_RELOC_OBJECTID
+	DATA_RELOC_TREE_OBJECTID  = internal.DATA_RELOC_TREE_OBJECTID
+	EXTENT_CSUM_OBJECTID      = internal.EXTENT_CSUM_OBJECTID
+	FREE_SPACE_OBJECTID       = internal.FREE_SPACE_OBJECTID
+	FREE_INO_OBJECTID         = internal.FREE_INO_OBJECTID
+	FIRST_FREE_OBJECTID       = internal.FIRST_FREE_OBJECTID
+	LAST_FREE_OBJECTID        = internal.LAST_FREE_OBJECTID
+	FIRST_CHUNK_TREE_OBJECTID = internal.FIRST_CHUNK_TREE_OBJECTID
+	DEV_ITEMS_OBJECTID        = internal.DEV_ITEMS_OBJECTID
+	EMPTY_SUBVOL_DIR_OBJECTID = internal.EMPTY_SUBVOL_DIR_OBJECTID
+)