1 files changed, 27 insertions, 9 deletions
diff --git a/pkg/abi/linux/fcntl.go b/pkg/abi/linux/fcntl.go
index 30902a8ca..f78315ebf 100644
--- a/pkg/abi/linux/fcntl.go
+++ b/pkg/abi/linux/fcntl.go
@@ -16,21 +16,39 @@ package linux
 
 // Commands from linux/fcntl.h.
 const (
-	F_DUPFD         = 0
-	F_GETFD         = 1
-	F_GETFL         = 3
-	F_GETOWN        = 9
-	F_SETFD         = 2
-	F_SETFL         = 4
-	F_SETLK         = 6
-	F_SETLKW        = 7
-	F_SETOWN        = 8
+	F_DUPFD         = 0x0
+	F_GETFD         = 0x1
+	F_SETFD         = 0x2
+	F_GETFL         = 0x3
+	F_SETFL         = 0x4
+	F_SETLK         = 0x6
+	F_SETLKW        = 0x7
+	F_SETOWN        = 0x8
+	F_GETOWN        = 0x9
 	F_DUPFD_CLOEXEC = 1024 + 6
 	F_SETPIPE_SZ    = 1024 + 7
 	F_GETPIPE_SZ    = 1024 + 8
 )
 
+// Commands for F_SETLK.
+const (
+	F_RDLCK = 0x0
+	F_WRLCK = 0x1
+	F_UNLCK = 0x2
+)
+
 // Flags for fcntl.
 const (
 	FD_CLOEXEC = 00000001
 )
+
+// Lock structure for F_SETLK.
+type Flock struct {
+	Type   int16
+	Whence int16
+	_      [4]byte
+	Start  int64
+	Len    int64
+	Pid    int32
+	_      [4]byte
+}