pkg/compiler: generate complex len targets

Change the generated format for len type to support multiple path elements.

1 files changed, 103 insertions, 103 deletions

diff --git a/sys/openbsd/gen/amd64.go b/sys/openbsd/gen/amd64.go
index 2ddd4c293..a05ffd498 100644
--- a/sys/openbsd/gen/amd64.go
+++ b/sys/openbsd/gen/amd64.go
@@ -45,12 +45,12 @@ var structDescs_amd64 = []*KeyedStruct{
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "k", TypeSize: 4}}},
 	}}},
 	{Key: StructKey{Name: "bpf_dltlist", Dir: 1}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "bpf_dltlist", TypeSize: 16, ArgDir: 1}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "bfl_len", TypeSize: 4, ArgDir: 1}}, Buf: "bfl_list"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "bfl_len", TypeSize: 4, ArgDir: 1}}, Path: []string{"bfl_list"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "bfl_list", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", TypeSize: 4}}}}},
 	}}},
 	{Key: StructKey{Name: "bpf_program"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "bpf_program", TypeSize: 16}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "bf_len", TypeSize: 4}}, Buf: "bf_insns"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "bf_len", TypeSize: 4}}, Path: []string{"bf_insns"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "bf_insns", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "bf_insns"}}}},
 	}}},
@@ -63,7 +63,7 @@ var structDescs_amd64 = []*KeyedStruct{
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int16", FldName: "bv_minor", TypeSize: 2, ArgDir: 1}}},
 	}}},
 	{Key: StructKey{Name: "cmsghdr"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "cmsghdr", IsVarlen: true}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "cmsg_len", TypeSize: 8}}, Buf: "parent"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "cmsg_len", TypeSize: 8}}, Path: []string{"parent"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "cmsg_levels", FldName: "cmsg_level", TypeSize: 4}}, Vals: []uint64{65535, 1}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "cmsg_type", TypeSize: 4}}},
 		&BufferType{TypeCommon: TypeCommon{TypeName: "array", FldName: "data", IsVarlen: true}},
@@ -73,7 +73,7 @@ var structDescs_amd64 = []*KeyedStruct{
 		&StructType{Key: StructKey{Name: "cmsghdr_un_cred"}, FldName: "cred"},
 	}}},
 	{Key: StructKey{Name: "cmsghdr_un_cred"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "cmsghdr_un_cred", TypeSize: 32}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "parent"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"parent"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 4}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "type", TypeSize: 4}}},
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "pid", FldName: "pid", TypeSize: 4}},
@@ -82,7 +82,7 @@ var structDescs_amd64 = []*KeyedStruct{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 	}, AlignAttr: 8}},
 	{Key: StructKey{Name: "cmsghdr_un_rights"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "cmsghdr_un_rights", IsVarlen: true}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "parent"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"parent"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 4}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "type", TypeSize: 4}}, Val: 1},
 		&ArrayType{TypeCommon: TypeCommon{TypeName: "array", FldName: "fds", IsVarlen: true}, Type: &ResourceType{TypeCommon: TypeCommon{TypeName: "fd", TypeSize: 4}}},
@@ -129,11 +129,11 @@ var structDescs_amd64 = []*KeyedStruct{
 	}}},
 	{Key: StructKey{Name: "iovec_in"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "iovec_in", TypeSize: 16}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 	}}},
 	{Key: StructKey{Name: "iovec_out"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "iovec_out", TypeSize: 16}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 	}}},
 	{Key: StructKey{Name: "ipc_perm"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipc_perm", TypeSize: 48}, Fields: []Type{
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "key", TypeSize: 4}}},
@@ -201,12 +201,12 @@ var structDescs_amd64 = []*KeyedStruct{
 	}}},
 	{Key: StructKey{Name: "msghdr_un"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "msghdr_un", TypeSize: 56}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 4}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 4}}, Path: []string{"addr"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "vec", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_in"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Buf: "vec"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Path: []string{"vec"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "ctrl", TypeSize: 8, IsOptional: true}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &UnionType{Key: StructKey{Name: "cmsghdr_un"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "bytesize", FldName: "ctrllen", TypeSize: 8}}, BitSize: 8, Buf: "ctrl"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "bytesize", FldName: "ctrllen", TypeSize: 8}}, BitSize: 8, Path: []string{"ctrl"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "send_flags", FldName: "f", TypeSize: 4}}, Vals: []uint64{1, 2, 4, 8, 1024}, BitMask: true},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 	}}},
@@ -240,7 +240,7 @@ var structDescs_amd64 = []*KeyedStruct{
 	{Key: StructKey{Name: "pci_rom", Dir: 1}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "pci_rom", TypeSize: 16, ArgDir: 1}, Fields: []Type{
 		&StructType{Key: StructKey{Name: "pcisel", Dir: 1}, FldName: "pr_sel"},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 1}}, IsPad: true},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "pr_romlen", TypeSize: 4, ArgDir: 1}}, Buf: "pr_rom"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "pr_romlen", TypeSize: 4, ArgDir: 1}}, Path: []string{"pr_rom"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "pr_rom", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}, Type: &IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", TypeSize: 4, ArgDir: 1}}}}},
 	}}},
 	{Key: StructKey{Name: "pcisel"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "pcisel", TypeSize: 3}, Fields: []Type{
@@ -264,12 +264,12 @@ var structDescs_amd64 = []*KeyedStruct{
 	}}},
 	{Key: StructKey{Name: "recv_msghdr", Dir: 2}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "recv_msghdr", TypeSize: 56, ArgDir: 2}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msg_name", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage", Dir: 1}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_namelen", TypeSize: 4, ArgDir: 2}}, Buf: "msg_name"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_namelen", TypeSize: 4, ArgDir: 2}}, Path: []string{"msg_name"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msg_iov", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_out"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_iovlen", TypeSize: 8, ArgDir: 2}}, Buf: "msg_iov"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_iovlen", TypeSize: 8, ArgDir: 2}}, Path: []string{"msg_iov"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msg_control", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_controllen", TypeSize: 8, ArgDir: 2}}, Buf: "msg_control"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_controllen", TypeSize: 8, ArgDir: 2}}, Path: []string{"msg_control"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "msg_flags", TypeSize: 4, ArgDir: 2}}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 	}}},
@@ -314,12 +314,12 @@ var structDescs_amd64 = []*KeyedStruct{
 	}}},
 	{Key: StructKey{Name: "send_msghdr"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "send_msghdr", TypeSize: 56}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msg_name", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_namelen", TypeSize: 4}}, Buf: "msg_name"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_namelen", TypeSize: 4}}, Path: []string{"msg_name"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msg_iov", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_in"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_iovlen", TypeSize: 8}}, Buf: "msg_iov"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "msg_iovlen", TypeSize: 8}}, Path: []string{"msg_iov"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msg_control", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "cmsghdr"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "bytesize", FldName: "msg_controllen", TypeSize: 8}}, BitSize: 8, Buf: "msg_control"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "bytesize", FldName: "msg_controllen", TypeSize: 8}}, BitSize: 8, Path: []string{"msg_control"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "msg_flags", TypeSize: 4}}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 	}}},
@@ -533,9 +533,9 @@ var structDescs_amd64 = []*KeyedStruct{
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int64", FldName: "vsi_base", TypeSize: 8, ArgDir: 2}}},
 	}}},
 	{Key: StructKey{Name: "vm_create_params"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "vm_create_params", TypeSize: 1280}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vcp_nmemranges", TypeSize: 8}}, Buf: "vcp_memranges"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vcp_nmemranges", TypeSize: 8}}, Path: []string{"vcp_memranges"}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int64", FldName: "vcp_ncpus", TypeSize: 8}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vcp_ndisks", TypeSize: 8}}, Buf: "vcp_disks"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vcp_ndisks", TypeSize: 8}}, Path: []string{"vcp_disks"}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int64", FldName: "vcp_nnics", TypeSize: 8}}},
 		&ArrayType{TypeCommon: TypeCommon{TypeName: "array", FldName: "vcp_memranges", TypeSize: 384}, Type: &StructType{Key: StructKey{Name: "vm_mem_range"}}, Kind: 1, RangeBegin: 16, RangeEnd: 16},
 		&ArrayType{TypeCommon: TypeCommon{TypeName: "array", FldName: "vcp_disks", TypeSize: 512}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "filename", TypeSize: 128}, Kind: 3}, Kind: 1, RangeBegin: 4, RangeEnd: 4},
@@ -562,7 +562,7 @@ var structDescs_amd64 = []*KeyedStruct{
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "vei_data", TypeSize: 4, ArgDir: 2}}},
 	}}},
 	{Key: StructKey{Name: "vm_info_params", Dir: 1}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "vm_info_params", TypeSize: 24, ArgDir: 1}, Fields: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vip_size", TypeSize: 8, ArgDir: 1}}, Buf: "vip_info"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vip_size", TypeSize: 8, ArgDir: 1}}, Path: []string{"vip_info"}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int64", FldName: "vip_info_ct", TypeSize: 8, ArgDir: 1}}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "vip_info", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
 	}}},
@@ -708,12 +708,12 @@ var structDescs_amd64 = []*KeyedStruct{
 	}}},
 	{Key: StructKey{Name: "wsmouse_parameters"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "wsmouse_parameters", TypeSize: 16}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "params", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "wsmouse_param"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nparams", TypeSize: 4}}, Buf: "params"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nparams", TypeSize: 4}}, Path: []string{"params"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 	}}},
 	{Key: StructKey{Name: "wsmouse_parameters", Dir: 1}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "wsmouse_parameters", TypeSize: 16, ArgDir: 1}, Fields: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "params", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "wsmouse_param"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nparams", TypeSize: 4, ArgDir: 1}}, Buf: "params"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nparams", TypeSize: 4, ArgDir: 1}}, Path: []string{"params"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 4}}, IsPad: true},
 	}}},
 	{Key: StructKey{Name: "wsmux_device"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "wsmux_device", TypeSize: 8}, Fields: []Type{
@@ -730,42 +730,42 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 30, Name: "accept", CallName: "accept", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}, Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 30, Name: "accept$inet", CallName: "accept", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8, IsOptional: true}, Type: &StructType{Key: StructKey{Name: "sockaddr_in", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}, Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 30, Name: "accept$inet6", CallName: "accept", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8, IsOptional: true}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}, Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 30, Name: "accept$unix", CallName: "accept", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}, Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 104, Name: "bind", CallName: "bind", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 104, Name: "bind$inet", CallName: "bind", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 104, Name: "bind$inet6", CallName: "bind", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 104, Name: "bind$unix", CallName: "bind", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 12, Name: "chdir", CallName: "chdir", Args: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "dir", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "filename", IsVarlen: true}, Kind: 3}},
@@ -810,22 +810,22 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 98, Name: "connect", CallName: "connect", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 98, Name: "connect$inet", CallName: "connect", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 98, Name: "connect$inet6", CallName: "connect", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 98, Name: "connect$unix", CallName: "connect", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 41, Name: "dup", CallName: "dup", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "oldfd", TypeSize: 4}},
@@ -922,13 +922,13 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 99, Name: "getdents", CallName: "getdents", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd_dir", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "ent", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "count", TypeSize: 8}}, Buf: "ent"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "count", TypeSize: 8}}, Path: []string{"ent"}},
 	}},
 	{NR: 43, Name: "getegid", CallName: "getegid", Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "gid", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 25, Name: "geteuid", CallName: "geteuid", Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "uid", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 47, Name: "getgid", CallName: "getgid", Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "gid", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 79, Name: "getgroups", CallName: "getgroups", Args: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Buf: "list"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Path: []string{"list"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "list", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 2, IsVarlen: true}, Type: &ResourceType{TypeCommon: TypeCommon{TypeName: "gid", TypeSize: 4, ArgDir: 2}}}},
 	}},
 	{NR: 70, Name: "getitimer", CallName: "getitimer", Args: []Type{
@@ -938,22 +938,22 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 31, Name: "getpeername", CallName: "getpeername", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}},
 	{NR: 31, Name: "getpeername$inet", CallName: "getpeername", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}},
 	{NR: 31, Name: "getpeername$inet6", CallName: "getpeername", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}},
 	{NR: 31, Name: "getpeername$unix", CallName: "getpeername", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peer", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "peer"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "peerlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"peer"}}},
 	}},
 	{NR: 207, Name: "getpgid", CallName: "getpgid", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "pid", FldName: "pid", TypeSize: 4}},
@@ -972,71 +972,71 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 32, Name: "getsockname", CallName: "getsockname", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "addr"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"addr"}}},
 	}},
 	{NR: 32, Name: "getsockname$inet", CallName: "getsockname", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "addr"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"addr"}}},
 	}},
 	{NR: 32, Name: "getsockname$inet6", CallName: "getsockname", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "addr"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"addr"}}},
 	}},
 	{NR: 32, Name: "getsockname$unix", CallName: "getsockname", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "addr"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addrlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"addr"}}},
 	}},
 	{NR: 118, Name: "getsockopt", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "level", TypeSize: 4}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "optname", TypeSize: 4}}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "optval"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"optval"}}},
 	}},
 	{NR: 118, Name: "getsockopt$SO_PEERCRED", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 4130},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "ucred", Dir: 1}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 118, Name: "getsockopt$inet_opts", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "sockopt_opt_ip_opts", FldName: "optname", TypeSize: 8}}, Vals: []uint64{1}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "optval"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"optval"}}},
 	}},
 	{NR: 118, Name: "getsockopt$sock_cred", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 4130},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "ucred", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "optval"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"optval"}}},
 	}},
 	{NR: 118, Name: "getsockopt$sock_int", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "sockopt_opt_sock_int", FldName: "optname", TypeSize: 8}}, Vals: []uint64{1, 4, 512, 8, 16, 128, 32, 256, 4097, 4098, 4099, 4100, 2048, 4104, 4103}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", TypeSize: 4, ArgDir: 1}}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "optval"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"optval"}}},
 	}},
 	{NR: 118, Name: "getsockopt$sock_linger", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 128},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "linger", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "optval"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"optval"}}},
 	}},
 	{NR: 118, Name: "getsockopt$sock_timeval", CallName: "getsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "sockopt_opt_sock_timeval", FldName: "optname", TypeSize: 8}}, Vals: []uint64{4102, 4101}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "timeval", Dir: 1}}},
-		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Buf: "optval"}},
+		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optlen", TypeSize: 8}, Type: &LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", TypeSize: 4, ArgDir: 2}}, Path: []string{"optval"}}},
 	}},
 	{NR: 24, Name: "getuid", CallName: "getuid", Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "uid", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 54, Name: "ioctl$BIOCFLUSH", CallName: "ioctl", MissingArgs: 1, Args: []Type{
@@ -1635,12 +1635,12 @@ var syscalls_amd64 = []*Syscall{
 	}},
 	{NR: 75, Name: "madvise", CallName: "madvise", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "madvise_flags", FldName: "advice", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3, 4, 5, 6}},
 	}},
 	{NR: 250, Name: "minherit", CallName: "minherit", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "inherit_flags", FldName: "inherit", TypeSize: 8}}, Vals: []uint64{2, 1, 0, 3}},
 	}},
 	{NR: 136, Name: "mkdir", CallName: "mkdir", Args: []Type{
@@ -1670,14 +1670,14 @@ var syscalls_amd64 = []*Syscall{
 	}},
 	{NR: 203, Name: "mlock", CallName: "mlock", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 271, Name: "mlockall", CallName: "mlockall", Args: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "mlockall_flags", FldName: "flags", TypeSize: 8}}, Vals: []uint64{1, 2}, BitMask: true},
 	}},
 	{NR: 197, Name: "mmap", CallName: "mmap", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "mmap_prot", FldName: "prot", TypeSize: 8}}, Vals: []uint64{4, 1, 2, 0}, BitMask: true},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "mmap_flags", FldName: "flags", TypeSize: 8}}, Vals: []uint64{1, 2, 16, 4096, 16384, 8192, 2048}, BitMask: true},
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
@@ -1686,7 +1686,7 @@ var syscalls_amd64 = []*Syscall{
 	}},
 	{NR: 74, Name: "mprotect", CallName: "mprotect", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "mmap_prot", FldName: "prot", TypeSize: 8}}, Vals: []uint64{4, 1, 2, 0}, BitMask: true},
 	}},
 	{NR: 297, Name: "msgctl$IPC_RMID", CallName: "msgctl", MissingArgs: 1, Args: []Type{
@@ -1714,24 +1714,24 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 227, Name: "msgrcv", CallName: "msgrcv", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "ipc_msq", FldName: "msqid", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msgp", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "msgbuf", Dir: 1}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "sz", TypeSize: 8}}, Buf: "msgp"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "sz", TypeSize: 8}}, Path: []string{"msgp"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "msgbuf_type", FldName: "typ", TypeSize: 8}}, Vals: []uint64{0, 1, 2, 3}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "msgrcv_flags", FldName: "flags", TypeSize: 8}}, Vals: []uint64{2048, 4096}, BitMask: true},
 	}},
 	{NR: 226, Name: "msgsnd", CallName: "msgsnd", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "ipc_msq", FldName: "msqid", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "msgp", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "msgbuf"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "sz", TypeSize: 8}}, Buf: "msgp"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "sz", TypeSize: 8}}, Path: []string{"msgp"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "msgsnd_flags", FldName: "flags", TypeSize: 8}}, Vals: []uint64{2048}, BitMask: true},
 	}},
 	{NR: 204, Name: "munlock", CallName: "munlock", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 272, Name: "munlockall", CallName: "munlockall"},
 	{NR: 73, Name: "munmap", CallName: "munmap", Args: []Type{
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "addr", TypeSize: 8}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 91, Name: "nanosleep", CallName: "nanosleep", Args: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "req", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "timespec"}}},
@@ -1832,89 +1832,89 @@ var syscalls_amd64 = []*Syscall{
 	}},
 	{NR: 252, Name: "poll", CallName: "poll", Args: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "fds", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "pollfd"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nfds", TypeSize: 8}}, Buf: "fds"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nfds", TypeSize: 8}}, Path: []string{"fds"}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "timeout", TypeSize: 4}}},
 	}},
 	{NR: 173, Name: "pread", CallName: "pread", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nbyte", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nbyte", TypeSize: 8}}, Path: []string{"buf"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "pad", TypeSize: 8}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "fileoff", FldName: "off", TypeSize: 8}}, Kind: 1},
 	}},
 	{NR: 267, Name: "preadv", CallName: "preadv", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "vec", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_out"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Buf: "vec"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Path: []string{"vec"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "pad", TypeSize: 8}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "fileoff", FldName: "off", TypeSize: 8}}, Kind: 1},
 	}},
 	{NR: 174, Name: "pwrite", CallName: "pwrite", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nbyte", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nbyte", TypeSize: 8}}, Path: []string{"buf"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "pad", TypeSize: 8}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "fileoff", FldName: "off", TypeSize: 8}}, Kind: 1},
 	}},
 	{NR: 268, Name: "pwritev", CallName: "pwritev", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "vec", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_in"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Buf: "vec"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Path: []string{"vec"}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "pad", TypeSize: 8}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "fileoff", FldName: "off", TypeSize: 8}}, Kind: 1},
 	}},
 	{NR: 3, Name: "read", CallName: "read", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "count", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "count", TypeSize: 8}}, Path: []string{"buf"}},
 	}},
 	{NR: 58, Name: "readlink", CallName: "readlink", Args: []Type{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "path", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "filename", IsVarlen: true}, Kind: 3}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "siz", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "siz", TypeSize: 8}}, Path: []string{"buf"}},
 	}},
 	{NR: 322, Name: "readlinkat", CallName: "readlinkat", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd_dir", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "path", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "filename", IsVarlen: true}, Kind: 3}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "siz", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "siz", TypeSize: 8}}, Path: []string{"buf"}},
 	}},
 	{NR: 120, Name: "readv", CallName: "readv", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "vec", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_out"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Buf: "vec"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Path: []string{"vec"}},
 	}},
 	{NR: 29, Name: "recvfrom", CallName: "recvfrom", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "recv_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{2048, 1, 2, 64}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 29, Name: "recvfrom$inet", CallName: "recvfrom", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "recv_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{2048, 1, 2, 64}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &StructType{Key: StructKey{Name: "sockaddr_in"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 29, Name: "recvfrom$inet6", CallName: "recvfrom", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "recv_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{2048, 1, 2, 64}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 29, Name: "recvfrom$unix", CallName: "recvfrom", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", ArgDir: 1, IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "recv_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{2048, 1, 2, 64}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 27, Name: "recvmsg", CallName: "recvmsg", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
@@ -1935,7 +1935,7 @@ var syscalls_amd64 = []*Syscall{
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "path", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "filename", IsVarlen: true}, Kind: 3}},
 	}},
 	{NR: 71, Name: "select", CallName: "select", Args: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "n", TypeSize: 8}}, Buf: "inp"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "n", TypeSize: 8}}, Path: []string{"inp"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "inp", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "fd_set", Dir: 2}}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "outp", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "fd_set", Dir: 2}}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "exp", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "fd_set", Dir: 2}}},
@@ -2013,7 +2013,7 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 290, Name: "semop", CallName: "semop", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "ipc_sem", FldName: "semid", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "ops", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "sembuf"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nops", TypeSize: 8}}, Buf: "ops"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "nops", TypeSize: 8}}, Path: []string{"ops"}},
 	}},
 	{NR: 28, Name: "sendmsg", CallName: "sendmsg", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
@@ -2028,34 +2028,34 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 133, Name: "sendto", CallName: "sendto", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "send_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{1, 2, 4, 8, 1024}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_storage"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 133, Name: "sendto$inet", CallName: "sendto", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "send_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{1, 2, 4, 8, 1024}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &StructType{Key: StructKey{Name: "sockaddr_in"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 133, Name: "sendto$inet6", CallName: "sendto", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "send_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{1, 2, 4, 8, 1024}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &StructType{Key: StructKey{Name: "sockaddr_in6"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 133, Name: "sendto$unix", CallName: "sendto", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_unix", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"buf"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "send_flags", FldName: "f", TypeSize: 8}}, Vals: []uint64{1, 2, 4, 8, 1024}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "addr", TypeSize: 8, IsOptional: true}, Type: &UnionType{Key: StructKey{Name: "sockaddr_un"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Buf: "addr"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "addrlen", TypeSize: 8}}, Path: []string{"addr"}},
 	}},
 	{NR: 182, Name: "setegid", CallName: "setegid", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "gid", FldName: "egid", TypeSize: 4}},
@@ -2067,7 +2067,7 @@ var syscalls_amd64 = []*Syscall{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "gid", FldName: "gid", TypeSize: 4}},
 	}},
 	{NR: 80, Name: "setgroups", CallName: "setgroups", Args: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Buf: "list"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Path: []string{"list"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "list", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &ResourceType{TypeCommon: TypeCommon{TypeName: "gid", TypeSize: 4}}}},
 	}},
 	{NR: 69, Name: "setitimer", CallName: "setitimer", Args: []Type{
@@ -2096,63 +2096,63 @@ var syscalls_amd64 = []*Syscall{
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "level", TypeSize: 4}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", FldName: "optname", TypeSize: 4}}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$inet6_MRT6_ADD_MFC", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 41},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 104},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "mf6cctl"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$inet6_MRT6_ADD_MIF", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 41},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 102},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "mif6ctl"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$inet6_MRT6_DEL_MFC", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in6", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 41},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 105},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "mf6cctl"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$inet_opts", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock_in", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "sockopt_opt_ip_opts", FldName: "optname", TypeSize: 8}}, Vals: []uint64{1}, BitMask: true},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$sock_cred", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 4130},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "ucred"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$sock_int", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "sockopt_opt_sock_int", FldName: "optname", TypeSize: 8}}, Vals: []uint64{1, 4, 512, 8, 16, 128, 32, 256, 4097, 4098, 4099, 4100, 2048, 4104, 4103}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int32", TypeSize: 4}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$sock_linger", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "optname", TypeSize: 8}}, Val: 128},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "linger"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 105, Name: "setsockopt$sock_timeval", CallName: "setsockopt", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "sock", FldName: "fd", TypeSize: 4}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "level", TypeSize: 8}}, Val: 65535},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "sockopt_opt_sock_timeval", FldName: "optname", TypeSize: 8}}, Vals: []uint64{4102, 4101}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "optval", TypeSize: 8}, Type: &StructType{Key: StructKey{Name: "timeval"}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Buf: "optval"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "optlen", TypeSize: 8}}, Path: []string{"optval"}},
 	}},
 	{NR: 23, Name: "setuid", CallName: "setuid", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "uid", FldName: "uid", TypeSize: 4}},
@@ -2189,13 +2189,13 @@ var syscalls_amd64 = []*Syscall{
 	}},
 	{NR: 289, Name: "shmget", CallName: "shmget", Args: []Type{
 		&ProcType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "proc", FldName: "key", TypeSize: 8}}, ValuesStart: 2039339027, ValuesPerProc: 4},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Buf: "unused"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Path: []string{"unused"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "shmget_flags", FldName: "flags", TypeSize: 8}}, Vals: []uint64{512, 1024, 256, 128, 64, 32, 16, 8, 4, 2, 1}, BitMask: true},
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "unused", TypeSize: 8}},
 	}, Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "ipc_shm", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
 	{NR: 289, Name: "shmget$private", CallName: "shmget", Args: []Type{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "key", TypeSize: 8}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Buf: "unused"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "size", TypeSize: 8}}, Path: []string{"unused"}},
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "shmget_flags", FldName: "flags", TypeSize: 8}}, Vals: []uint64{512, 1024, 256, 128, 64, 32, 16, 8, 4, 2, 1}, BitMask: true},
 		&VmaType{TypeCommon: TypeCommon{TypeName: "vma", FldName: "unused", TypeSize: 8}},
 	}, Ret: &ResourceType{TypeCommon: TypeCommon{TypeName: "ipc_shm", FldName: "ret", TypeSize: 4, ArgDir: 1}}},
@@ -2250,7 +2250,7 @@ var syscalls_amd64 = []*Syscall{
 	}},
 	{NR: 36, Name: "sync", CallName: "sync"},
 	{Name: "syz_emit_ethernet", CallName: "syz_emit_ethernet", Args: []Type{
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Buf: "packet"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "len", TypeSize: 8}}, Path: []string{"packet"}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "packet", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
 	}},
 	{Name: "syz_execute_func", CallName: "syz_execute_func", Args: []Type{
@@ -2303,12 +2303,12 @@ var syscalls_amd64 = []*Syscall{
 	{NR: 4, Name: "write", CallName: "write", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "buf", TypeSize: 8}, Type: &BufferType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "count", TypeSize: 8}}, Buf: "buf"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "count", TypeSize: 8}}, Path: []string{"buf"}},
 	}},
 	{NR: 121, Name: "writev", CallName: "writev", Args: []Type{
 		&ResourceType{TypeCommon: TypeCommon{TypeName: "fd", FldName: "fd", TypeSize: 4}},
 		&PtrType{TypeCommon: TypeCommon{TypeName: "ptr", FldName: "vec", TypeSize: 8}, Type: &ArrayType{TypeCommon: TypeCommon{TypeName: "array", IsVarlen: true}, Type: &StructType{Key: StructKey{Name: "iovec_in"}}}},
-		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Buf: "vec"},
+		&LenType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "len", FldName: "vlen", TypeSize: 8}}, Path: []string{"vec"}},
 	}},
 }
 
@@ -2874,4 +2874,4 @@ var consts_amd64 = []ConstValue{
 	{Name: "__MAP_NOREPLACE", Value: 2048},
 }
 
-const revision_amd64 = "1b6671ad8d712ebbd04cdedcec2c7d0d224996b9"
+const revision_amd64 = "83fc77c2a3d59b3105442938cf3fa8bf6d8d1f43"