unix: don't export padding fields on DragonflyBSD

Re-run ./mkall.sh to avoid exporting Pad_cgo* fields on dragonfly/amd64.
This also adds some additional RLIMIT_* constants.

Updates golang/go#18632

Change-Id: I7969d8ab12c07befd7b1ff0d1dbc67f6622c39b1
Reviewed-on: https://go-review.googlesource.com/100595
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

unix/zerrors_dragonfly_amd64.go

@@ -980,7 +980,10 @@ const (
 	RLIMIT_CPU                        = 0x0
 	RLIMIT_DATA                       = 0x2
 	RLIMIT_FSIZE                      = 0x1
+	RLIMIT_MEMLOCK                    = 0x6
 	RLIMIT_NOFILE                     = 0x8
+	RLIMIT_NPROC                      = 0x7
+	RLIMIT_RSS                        = 0x5
 	RLIMIT_STACK                      = 0x3
 	RLIM_INFINITY                     = 0x7fffffffffffffff
 	RTAX_AUTHOR                       = 0x6

unix/ztypes_dragonfly_amd64.go

@@ -108,7 +108,7 @@ type Statfs_t struct {
 	Owner       uint32
 	Type        int32
 	Flags       int32
-	Pad_cgo_0   [4]byte
+	_           [4]byte
 	Syncwrites  int64
 	Asyncwrites int64
 	Fstypename  [16]int8
@@ -118,7 +118,7 @@ type Statfs_t struct {
 	Spares1     int16
 	Mntfromname [80]int8
 	Spares2     int16
-	Pad_cgo_1   [4]byte
+	_           [4]byte
 	Spare       [2]int64
 }
 
@@ -219,10 +219,10 @@ type IPv6Mreq struct {
 type Msghdr struct {
 	Name       *byte
 	Namelen    uint32
-	Pad_cgo_0  [4]byte
+	_          [4]byte
 	Iov        *Iovec
 	Iovlen     int32
-	Pad_cgo_1  [4]byte
+	_          [4]byte
 	Control    *byte
 	Controllen uint32
 	Flags      int32
@@ -294,14 +294,14 @@ const (
 )
 
 type IfMsghdr struct {
-	Msglen    uint16
-	Version   uint8
-	Type      uint8
-	Addrs     int32
-	Flags     int32
-	Index     uint16
-	Pad_cgo_0 [2]byte
-	Data      IfData
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
+	Data    IfData
 }
 
 type IfData struct {
@@ -311,7 +311,7 @@ type IfData struct {
 	Hdrlen     uint8
 	Recvquota  uint8
 	Xmitquota  uint8
-	Pad_cgo_0  [2]byte
+	_          [2]byte
 	Mtu        uint64
 	Metric     uint64
 	Link_state uint64
@@ -333,24 +333,24 @@ type IfData struct {
 }
 
 type IfaMsghdr struct {
-	Msglen    uint16
-	Version   uint8
-	Type      uint8
-	Addrs     int32
-	Flags     int32
-	Index     uint16
-	Pad_cgo_0 [2]byte
-	Metric    int32
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
+	Metric  int32
 }
 
 type IfmaMsghdr struct {
-	Msglen    uint16
-	Version   uint8
-	Type      uint8
-	Addrs     int32
-	Flags     int32
-	Index     uint16
-	Pad_cgo_0 [2]byte
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
 }
 
 type IfAnnounceMsghdr struct {
@@ -363,19 +363,19 @@ type IfAnnounceMsghdr struct {
 }
 
 type RtMsghdr struct {
-	Msglen    uint16
-	Version   uint8
-	Type      uint8
-	Index     uint16
-	Pad_cgo_0 [2]byte
-	Flags     int32
-	Addrs     int32
-	Pid       int32
-	Seq       int32
-	Errno     int32
-	Use       int32
-	Inits     uint64
-	Rmx       RtMetrics
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Index   uint16
+	_       [2]byte
+	Flags   int32
+	Addrs   int32
+	Pid     int32
+	Seq     int32
+	Errno   int32
+	Use     int32
+	Inits   uint64
+	Rmx     RtMetrics
 }
 
 type RtMetrics struct {
@@ -391,7 +391,7 @@ type RtMetrics struct {
 	Hopcount  uint64
 	Mssopt    uint16
 	Pad       uint16
-	Pad_cgo_0 [4]byte
+	_         [4]byte
 	Msl       uint64
 	Iwmaxsegs uint64
 	Iwcapsegs uint64
@@ -416,9 +416,9 @@ type BpfStat struct {
 }
 
 type BpfProgram struct {
-	Len       uint32
-	Pad_cgo_0 [4]byte
-	Insns     *BpfInsn
+	Len   uint32
+	_     [4]byte
+	Insns *BpfInsn
 }
 
 type BpfInsn struct {
@@ -429,11 +429,11 @@ type BpfInsn struct {
 }
 
 type BpfHdr struct {
-	Tstamp    Timeval
-	Caplen    uint32
-	Datalen   uint32
-	Hdrlen    uint16
-	Pad_cgo_0 [6]byte
+	Tstamp  Timeval
+	Caplen  uint32
+	Datalen uint32
+	Hdrlen  uint16
+	_       [6]byte
 }
 
 type Termios struct {