diff --git a/unix/types_linux.go b/unix/types_linux.go
index 9a8d2b6f..abc5e5d7 100644
--- a/unix/types_linux.go
+++ b/unix/types_linux.go
@@ -55,6 +55,8 @@ package unix
 #include <unistd.h>
 #include <ustat.h>
 #include <utime.h>
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
 
 #ifdef TCSETS2
 // On systems that have "struct termios2" use this as type Termios.
diff --git a/unix/ztypes_linux_386.go b/unix/ztypes_linux_386.go
index 72c7f091..fb1257ae 100644
--- a/unix/ztypes_linux_386.go
+++ b/unix/ztypes_linux_386.go
@@ -151,6 +151,15 @@ type Flock_t struct {
 	Pid    int32
 }
 
+const (
+	FADV_NORMAL     = 0x0
+	FADV_RANDOM     = 0x1
+	FADV_SEQUENTIAL = 0x2
+	FADV_WILLNEED   = 0x3
+	FADV_DONTNEED   = 0x4
+	FADV_NOREUSE    = 0x5
+)
+
 type RawSockaddrInet4 struct {
 	Family uint16
 	Port   uint16
diff --git a/unix/ztypes_linux_amd64.go b/unix/ztypes_linux_amd64.go
index 70a443f4..34edb368 100644
--- a/unix/ztypes_linux_amd64.go
+++ b/unix/ztypes_linux_amd64.go
@@ -153,6 +153,15 @@ type Flock_t struct {
 	Pad_cgo_1 [4]byte
 }
 
+const (
+	FADV_NORMAL     = 0x0
+	FADV_RANDOM     = 0x1
+	FADV_SEQUENTIAL = 0x2
+	FADV_WILLNEED   = 0x3
+	FADV_DONTNEED   = 0x4
+	FADV_NOREUSE    = 0x5
+)
+
 type RawSockaddrInet4 struct {
 	Family uint16
 	Port   uint16