fuse: add type glue for v22 and v23 protocol extensions.

fuse/opcode.go

@@ -51,6 +51,7 @@ const (
 	_OP_BATCH_FORGET = int32(42)
 	_OP_FALLOCATE    = int32(43) // protocol version 19.
 	_OP_READDIRPLUS  = int32(44) // protocol version 21.
+	_OP_FUSE_RENAME2 = int32(45) // protocol version 23.
 
 	// The following entries don't have to be compatible across Go-FUSE versions.
 	_OP_NOTIFY_ENTRY  = int32(100)
@@ -98,6 +99,14 @@ func doInit(server *Server, req *request) {
 		out.Minor = input.Minor
 	}
 
+	if out.Minor <= 22 {
+		tweaked := *req.handler
+
+		// v8-v22 don't have TimeGran and further fields.
+		tweaked.OutputSize = 24
+		req.handler = &tweaked
+	}
+
 	req.outData = unsafe.Pointer(out)
 	req.status = OK
 }

fuse/print.go

@@ -39,6 +39,9 @@ func init() {
 		CAP_AUTO_INVAL_DATA:      "AUTO_INVAL_DATA",
 		CAP_READDIRPLUS:          "READDIRPLUS",
 		CAP_READDIRPLUS_AUTO:     "READDIRPLUS_AUTO",
+		CAP_FUSE_ASYNC_DIO:       "ASYNC_DIO",
+		CAP_FUSE_WRITEBACK_CACHE: "WRITEBACK_CACHE",
+		CAP_FUSE_NO_OPEN_SUPPORT: "NO_OPEN_SUPPORT",
 	}
 	releaseFlagNames = map[int64]string{
 		RELEASE_FLUSH: "FLUSH",
@@ -155,10 +158,11 @@ func (me *InitIn) string() string {
 }
 
 func (me *InitOut) string() string {
-	return fmt.Sprintf("{%d.%d Ra 0x%x %s %d/%d Wr 0x%x}",
+	return fmt.Sprintf("{%d.%d Ra 0x%x %s %d/%d Wr 0x%x Tg 0x%x}",
 		me.Major, me.Minor, me.MaxReadAhead,
 		FlagString(initFlagNames, int64(me.Flags), ""),
-		me.CongestionThreshold, me.MaxBackground, me.MaxWrite)
+		me.CongestionThreshold, me.MaxBackground, me.MaxWrite,
+		me.TimeGran)
 }
 
 func (s *FsyncIn) string() string {

fuse/types.go

@@ -61,6 +61,13 @@ type RenameIn struct {
 	Newdir uint64
 }
 
+type Rename2In struct {
+	InHeader
+	Newdir  uint64
+	Flags   uint32
+	Padding uint32
+}
+
 type LinkIn struct {
 	InHeader
 	Oldnodeid uint64
@@ -82,6 +89,7 @@ const ( // SetAttrIn.Valid
 	FATTR_ATIME_NOW = (1 << 7)
 	FATTR_MTIME_NOW = (1 << 8)
 	FATTR_LOCKOWNER = (1 << 9)
+	FATTR_CTIME     = (1 << 10)
 )
 
 type SetAttrInCommon struct {
@@ -94,10 +102,10 @@ type SetAttrInCommon struct {
 	LockOwner uint64
 	Atime     uint64
 	Mtime     uint64
-	Unused2   uint64
+	Ctime     uint64
 	Atimensec uint32
 	Mtimensec uint32
-	Unused3   uint32
+	Ctimensec uint32
 	Mode      uint32
 	Unused4   uint32
 	Owner
@@ -150,6 +158,9 @@ const (
 	CAP_AUTO_INVAL_DATA      = (1 << 12)
 	CAP_READDIRPLUS          = (1 << 13)
 	CAP_READDIRPLUS_AUTO     = (1 << 14)
+	CAP_FUSE_ASYNC_DIO       = (1 << 15)
+	CAP_FUSE_WRITEBACK_CACHE = (1 << 16)
+	CAP_FUSE_NO_OPEN_SUPPORT = (1 << 17)
 )
 
 type InitIn struct {
@@ -169,6 +180,8 @@ type InitOut struct {
 	MaxBackground       uint16
 	CongestionThreshold uint16
 	MaxWrite            uint32
+	TimeGran            uint32
+	Unused              [9]uint32
 }
 
 type _CuseInitIn struct {