diff --git a/unix/linux/types.go b/unix/linux/types.go
index 3855ce3c..2c282c49 100644
--- a/unix/linux/types.go
+++ b/unix/linux/types.go
@@ -477,6 +477,41 @@ type ItimerSpec C.struct_itimerspec
 
 type Itimerval C.struct_itimerval
 
+const (
+	ADJ_OFFSET            = C.ADJ_OFFSET
+	ADJ_FREQUENCY         = C.ADJ_FREQUENCY
+	ADJ_MAXERROR          = C.ADJ_MAXERROR
+	ADJ_ESTERROR          = C.ADJ_ESTERROR
+	ADJ_STATUS            = C.ADJ_STATUS
+	ADJ_TIMECONST         = C.ADJ_TIMECONST
+	ADJ_TAI               = C.ADJ_TAI
+	ADJ_SETOFFSET         = C.ADJ_SETOFFSET
+	ADJ_MICRO             = C.ADJ_MICRO
+	ADJ_NANO              = C.ADJ_NANO
+	ADJ_TICK              = C.ADJ_TICK
+	ADJ_OFFSET_SINGLESHOT = C.ADJ_OFFSET_SINGLESHOT
+	ADJ_OFFSET_SS_READ    = C.ADJ_OFFSET_SS_READ
+)
+
+const (
+	STA_PLL       = C.STA_PLL
+	STA_PPSFREQ   = C.STA_PPSFREQ
+	STA_PPSTIME   = C.STA_PPSTIME
+	STA_FLL       = C.STA_FLL
+	STA_INS       = C.STA_INS
+	STA_DEL       = C.STA_DEL
+	STA_UNSYNC    = C.STA_UNSYNC
+	STA_FREQHOLD  = C.STA_FREQHOLD
+	STA_PPSSIGNAL = C.STA_PPSSIGNAL
+	STA_PPSJITTER = C.STA_PPSJITTER
+	STA_PPSWANDER = C.STA_PPSWANDER
+	STA_PPSERROR  = C.STA_PPSERROR
+	STA_CLOCKERR  = C.STA_CLOCKERR
+	STA_NANO      = C.STA_NANO
+	STA_MODE      = C.STA_MODE
+	STA_CLK       = C.STA_CLK
+)
+
 const (
 	TIME_OK    = C.TIME_OK
 	TIME_INS   = C.TIME_INS
diff --git a/unix/ztypes_linux.go b/unix/ztypes_linux.go
index bacf1d96..7d9fc8f1 100644
--- a/unix/ztypes_linux.go
+++ b/unix/ztypes_linux.go
@@ -29,6 +29,41 @@ type Itimerval struct {
 	Value    Timeval
 }
 
+const (
+	ADJ_OFFSET            = 0x1
+	ADJ_FREQUENCY         = 0x2
+	ADJ_MAXERROR          = 0x4
+	ADJ_ESTERROR          = 0x8
+	ADJ_STATUS            = 0x10
+	ADJ_TIMECONST         = 0x20
+	ADJ_TAI               = 0x80
+	ADJ_SETOFFSET         = 0x100
+	ADJ_MICRO             = 0x1000
+	ADJ_NANO              = 0x2000
+	ADJ_TICK              = 0x4000
+	ADJ_OFFSET_SINGLESHOT = 0x8001
+	ADJ_OFFSET_SS_READ    = 0xa001
+)
+
+const (
+	STA_PLL       = 0x1
+	STA_PPSFREQ   = 0x2
+	STA_PPSTIME   = 0x4
+	STA_FLL       = 0x8
+	STA_INS       = 0x10
+	STA_DEL       = 0x20
+	STA_UNSYNC    = 0x40
+	STA_FREQHOLD  = 0x80
+	STA_PPSSIGNAL = 0x100
+	STA_PPSJITTER = 0x200
+	STA_PPSWANDER = 0x400
+	STA_PPSERROR  = 0x800
+	STA_CLOCKERR  = 0x1000
+	STA_NANO      = 0x2000
+	STA_MODE      = 0x4000
+	STA_CLK       = 0x8000
+)
+
 const (
 	TIME_OK    = 0x0
 	TIME_INS   = 0x1