diff --git a/unix/mkerrors.sh b/unix/mkerrors.sh
index 197301f..0d72dbb 100755
--- a/unix/mkerrors.sh
+++ b/unix/mkerrors.sh
@@ -94,6 +94,7 @@
 #include <sys/ioctl.h>
 #include <net/bpf.h>
 #include <net/if.h>
+#include <net/if_clone.h>
 #include <net/if_types.h>
 #include <net/route.h>
 #include <netinet/in.h>
diff --git a/unix/zerrors_dragonfly_amd64.go b/unix/zerrors_dragonfly_amd64.go
index 6130471..f5e91b7 100644
--- a/unix/zerrors_dragonfly_amd64.go
+++ b/unix/zerrors_dragonfly_amd64.go
@@ -62,6 +62,7 @@
 	B28800                            = 0x7080
 	B300                              = 0x12c
 	B38400                            = 0x9600
+	B460800                           = 0x70800
 	B4800                             = 0x12c0
 	B50                               = 0x32
 	B57600                            = 0xe100
@@ -69,12 +70,15 @@
 	B7200                             = 0x1c20
 	B75                               = 0x4b
 	B76800                            = 0x12c00
+	B921600                           = 0xe1000
 	B9600                             = 0x2580
+	BIOCFEEDBACK                      = 0x8004427d
 	BIOCFLUSH                         = 0x20004268
 	BIOCGBLEN                         = 0x40044266
 	BIOCGDLT                          = 0x4004426a
 	BIOCGDLTLIST                      = 0xc0104279
 	BIOCGETIF                         = 0x4020426b
+	BIOCGFEEDBACK                     = 0x4004427c
 	BIOCGHDRCMPLT                     = 0x40044274
 	BIOCGRSIG                         = 0x40044272
 	BIOCGRTIMEOUT                     = 0x4010426e
@@ -88,6 +92,7 @@
 	BIOCSETF                          = 0x80104267
 	BIOCSETIF                         = 0x8020426c
 	BIOCSETWF                         = 0x8010427b
+	BIOCSFEEDBACK                     = 0x8004427d
 	BIOCSHDRCMPLT                     = 0x80044275
 	BIOCSRSIG                         = 0x80044273
 	BIOCSRTIMEOUT                     = 0x8010426d
@@ -125,6 +130,7 @@
 	BPF_MINBUFSIZE                    = 0x20
 	BPF_MINOR_VERSION                 = 0x1
 	BPF_MISC                          = 0x7
+	BPF_MOD                           = 0x90
 	BPF_MSH                           = 0xa0
 	BPF_MUL                           = 0x20
 	BPF_NEG                           = 0x80
@@ -139,6 +145,7 @@
 	BPF_TXA                           = 0x80
 	BPF_W                             = 0x0
 	BPF_X                             = 0x8
+	BPF_XOR                           = 0xa0
 	BRKINT                            = 0x2
 	CFLUSH                            = 0xf
 	CLOCAL                            = 0x8000
@@ -156,6 +163,12 @@
 	CLOCK_UPTIME_FAST                 = 0x8
 	CLOCK_UPTIME_PRECISE              = 0x7
 	CLOCK_VIRTUAL                     = 0x1
+	CPUSTATES                         = 0x5
+	CP_IDLE                           = 0x4
+	CP_INTR                           = 0x3
+	CP_NICE                           = 0x1
+	CP_SYS                            = 0x2
+	CP_USER                           = 0x0
 	CREAD                             = 0x800
 	CRTSCTS                           = 0x30000
 	CS5                               = 0x0
@@ -175,6 +188,7 @@
 	DLT_A429                          = 0xb8
 	DLT_A653_ICM                      = 0xb9
 	DLT_AIRONET_HEADER                = 0x78
+	DLT_AOS                           = 0xde
 	DLT_APPLE_IP_OVER_IEEE1394        = 0x8a
 	DLT_ARCNET                        = 0x7
 	DLT_ARCNET_LINUX                  = 0x81
@@ -184,22 +198,33 @@
 	DLT_AX25                          = 0x3
 	DLT_AX25_KISS                     = 0xca
 	DLT_BACNET_MS_TP                  = 0xa5
+	DLT_BLUETOOTH_BREDR_BB            = 0xff
 	DLT_BLUETOOTH_HCI_H4              = 0xbb
 	DLT_BLUETOOTH_HCI_H4_WITH_PHDR    = 0xc9
+	DLT_BLUETOOTH_LE_LL               = 0xfb
+	DLT_BLUETOOTH_LE_LL_WITH_PHDR     = 0x100
+	DLT_BLUETOOTH_LINUX_MONITOR       = 0xfe
 	DLT_CAN20B                        = 0xbe
+	DLT_CAN_SOCKETCAN                 = 0xe3
 	DLT_CHAOS                         = 0x5
 	DLT_CHDLC                         = 0x68
 	DLT_CISCO_IOS                     = 0x76
 	DLT_C_HDLC                        = 0x68
 	DLT_C_HDLC_WITH_DIR               = 0xcd
+	DLT_DBUS                          = 0xe7
+	DLT_DECT                          = 0xdd
 	DLT_DOCSIS                        = 0x8f
+	DLT_DVB_CI                        = 0xeb
 	DLT_ECONET                        = 0x73
 	DLT_EN10MB                        = 0x1
 	DLT_EN3MB                         = 0x2
 	DLT_ENC                           = 0x6d
+	DLT_EPON                          = 0x103
 	DLT_ERF                           = 0xc5
 	DLT_ERF_ETH                       = 0xaf
 	DLT_ERF_POS                       = 0xb0
+	DLT_FC_2                          = 0xe0
+	DLT_FC_2_WITH_FRAME_DELIMS        = 0xe1
 	DLT_FDDI                          = 0xa
 	DLT_FLEXRAY                       = 0xd2
 	DLT_FRELAY                        = 0x6b
@@ -209,6 +234,8 @@
 	DLT_GPF_F                         = 0xab
 	DLT_GPF_T                         = 0xaa
 	DLT_GPRS_LLC                      = 0xa9
+	DLT_GSMTAP_ABIS                   = 0xda
+	DLT_GSMTAP_UM                     = 0xd9
 	DLT_HHDLC                         = 0x79
 	DLT_IBM_SN                        = 0x92
 	DLT_IBM_SP                        = 0x91
@@ -218,18 +245,28 @@
 	DLT_IEEE802_11_RADIO_AVS          = 0xa3
 	DLT_IEEE802_15_4                  = 0xc3
 	DLT_IEEE802_15_4_LINUX            = 0xbf
+	DLT_IEEE802_15_4_NOFCS            = 0xe6
 	DLT_IEEE802_15_4_NONASK_PHY       = 0xd7
 	DLT_IEEE802_16_MAC_CPS            = 0xbc
 	DLT_IEEE802_16_MAC_CPS_RADIO      = 0xc1
+	DLT_INFINIBAND                    = 0xf7
 	DLT_IPFILTER                      = 0x74
 	DLT_IPMB                          = 0xc7
 	DLT_IPMB_LINUX                    = 0xd1
+	DLT_IPMI_HPM_2                    = 0x104
+	DLT_IPNET                         = 0xe2
+	DLT_IPOIB                         = 0xf2
+	DLT_IPV4                          = 0xe4
+	DLT_IPV6                          = 0xe5
 	DLT_IP_OVER_FC                    = 0x7a
+	DLT_ISO_14443                     = 0x108
 	DLT_JUNIPER_ATM1                  = 0x89
 	DLT_JUNIPER_ATM2                  = 0x87
+	DLT_JUNIPER_ATM_CEMIC             = 0xee
 	DLT_JUNIPER_CHDLC                 = 0xb5
 	DLT_JUNIPER_ES                    = 0x84
 	DLT_JUNIPER_ETHER                 = 0xb2
+	DLT_JUNIPER_FIBRECHANNEL          = 0xea
 	DLT_JUNIPER_FRELAY                = 0xb4
 	DLT_JUNIPER_GGSN                  = 0x85
 	DLT_JUNIPER_ISM                   = 0xc2
@@ -242,25 +279,40 @@
 	DLT_JUNIPER_PPPOE                 = 0xa7
 	DLT_JUNIPER_PPPOE_ATM             = 0xa8
 	DLT_JUNIPER_SERVICES              = 0x88
+	DLT_JUNIPER_SRX_E2E               = 0xe9
 	DLT_JUNIPER_ST                    = 0xc8
 	DLT_JUNIPER_VP                    = 0xb7
+	DLT_JUNIPER_VS                    = 0xe8
 	DLT_LAPB_WITH_DIR                 = 0xcf
 	DLT_LAPD                          = 0xcb
 	DLT_LIN                           = 0xd4
+	DLT_LINUX_EVDEV                   = 0xd8
 	DLT_LINUX_IRDA                    = 0x90
 	DLT_LINUX_LAPD                    = 0xb1
 	DLT_LINUX_SLL                     = 0x71
 	DLT_LOOP                          = 0x6c
 	DLT_LTALK                         = 0x72
+	DLT_MATCHING_MAX                  = 0x109
+	DLT_MATCHING_MIN                  = 0x68
 	DLT_MFR                           = 0xb6
 	DLT_MOST                          = 0xd3
+	DLT_MPEG_2_TS                     = 0xf3
+	DLT_MPLS                          = 0xdb
 	DLT_MTP2                          = 0x8c
 	DLT_MTP2_WITH_PHDR                = 0x8b
 	DLT_MTP3                          = 0x8d
+	DLT_MUX27010                      = 0xec
+	DLT_NETANALYZER                   = 0xf0
+	DLT_NETANALYZER_TRANSPARENT       = 0xf1
+	DLT_NETLINK                       = 0xfd
+	DLT_NFC_LLCP                      = 0xf5
+	DLT_NFLOG                         = 0xef
+	DLT_NG40                          = 0xf4
 	DLT_NULL                          = 0x0
 	DLT_PCI_EXP                       = 0x7d
 	DLT_PFLOG                         = 0x75
 	DLT_PFSYNC                        = 0x12
+	DLT_PKTAP                         = 0x102
 	DLT_PPI                           = 0xc0
 	DLT_PPP                           = 0x9
 	DLT_PPP_BSDOS                     = 0x10
@@ -269,22 +321,51 @@
 	DLT_PPP_SERIAL                    = 0x32
 	DLT_PPP_WITH_DIR                  = 0xcc
 	DLT_PRISM_HEADER                  = 0x77
+	DLT_PROFIBUS_DL                   = 0x101
 	DLT_PRONET                        = 0x4
 	DLT_RAIF1                         = 0xc6
 	DLT_RAW                           = 0xc
+	DLT_RDS                           = 0x109
 	DLT_REDBACK_SMARTEDGE             = 0x20
 	DLT_RIO                           = 0x7c
+	DLT_RTAC_SERIAL                   = 0xfa
 	DLT_SCCP                          = 0x8e
+	DLT_SCTP                          = 0xf8
 	DLT_SITA                          = 0xc4
 	DLT_SLIP                          = 0x8
 	DLT_SLIP_BSDOS                    = 0xf
+	DLT_STANAG_5066_D_PDU             = 0xed
 	DLT_SUNATM                        = 0x7b
 	DLT_SYMANTEC_FIREWALL             = 0x63
 	DLT_TZSP                          = 0x80
 	DLT_USB                           = 0xba
+	DLT_USBPCAP                       = 0xf9
+	DLT_USB_FREEBSD                   = 0xba
 	DLT_USB_LINUX                     = 0xbd
+	DLT_USB_LINUX_MMAPPED             = 0xdc
+	DLT_USER0                         = 0x93
+	DLT_USER1                         = 0x94
+	DLT_USER10                        = 0x9d
+	DLT_USER11                        = 0x9e
+	DLT_USER12                        = 0x9f
+	DLT_USER13                        = 0xa0
+	DLT_USER14                        = 0xa1
+	DLT_USER15                        = 0xa2
+	DLT_USER2                         = 0x95
+	DLT_USER3                         = 0x96
+	DLT_USER4                         = 0x97
+	DLT_USER5                         = 0x98
+	DLT_USER6                         = 0x99
+	DLT_USER7                         = 0x9a
+	DLT_USER8                         = 0x9b
+	DLT_USER9                         = 0x9c
+	DLT_WATTSTOPPER_DLM               = 0x107
+	DLT_WIHART                        = 0xdf
+	DLT_WIRESHARK_UPPER_PDU           = 0xfc
 	DLT_X2E_SERIAL                    = 0xd5
 	DLT_X2E_XORAYA                    = 0xd6
+	DLT_ZWAVE_R1_R2                   = 0x105
+	DLT_ZWAVE_R3                      = 0x106
 	DT_BLK                            = 0x6
 	DT_CHR                            = 0x2
 	DT_DBF                            = 0xf
@@ -323,10 +404,11 @@
 	EV_EOF                            = 0x8000
 	EV_ERROR                          = 0x4000
 	EV_FLAG1                          = 0x2000
+	EV_HUP                            = 0x800
 	EV_NODATA                         = 0x1000
 	EV_ONESHOT                        = 0x10
 	EV_RECEIPT                        = 0x40
-	EV_SYSFLAGS                       = 0xf000
+	EV_SYSFLAGS                       = 0xf800
 	EXTA                              = 0x4b00
 	EXTB                              = 0x9600
 	EXTEXIT_LWP                       = 0x10000
@@ -365,8 +447,9 @@
 	IFF_ALLMULTI                      = 0x200
 	IFF_ALTPHYS                       = 0x4000
 	IFF_BROADCAST                     = 0x2
-	IFF_CANTCHANGE                    = 0x118e72
+	IFF_CANTCHANGE                    = 0x318e72
 	IFF_DEBUG                         = 0x4
+	IFF_IDIRECT                       = 0x200000
 	IFF_LINK0                         = 0x1000
 	IFF_LINK1                         = 0x2000
 	IFF_LINK2                         = 0x4000
@@ -441,7 +524,6 @@
 	IFT_EPLRS                         = 0x57
 	IFT_ESCON                         = 0x49
 	IFT_ETHER                         = 0x6
-	IFT_FAITH                         = 0xf2
 	IFT_FAST                          = 0x7d
 	IFT_FASTETHER                     = 0x3e
 	IFT_FASTETHERFX                   = 0x45
@@ -614,6 +696,7 @@
 	IN_CLASSD_NET                     = 0xf0000000
 	IN_CLASSD_NSHIFT                  = 0x1c
 	IN_LOOPBACKNET                    = 0x7f
+	IN_RFC3021_MASK                   = 0xfffffffe
 	IPPROTO_3PC                       = 0x22
 	IPPROTO_ADFS                      = 0x44
 	IPPROTO_AH                        = 0x33
@@ -735,7 +818,6 @@
 	IPV6_DEFHLIM                      = 0x40
 	IPV6_DONTFRAG                     = 0x3e
 	IPV6_DSTOPTS                      = 0x32
-	IPV6_FAITH                        = 0x1d
 	IPV6_FLOWINFO_MASK                = 0xffffff0f
 	IPV6_FLOWLABEL_MASK               = 0xffff0f00
 	IPV6_FRAGTTL                      = 0x78
@@ -747,7 +829,6 @@
 	IPV6_HLIMDEC                      = 0x1
 	IPV6_HOPLIMIT                     = 0x2f
 	IPV6_HOPOPTS                      = 0x31
-	IPV6_IPSEC_POLICY                 = 0x1c
 	IPV6_JOIN_GROUP                   = 0xc
 	IPV6_LEAVE_GROUP                  = 0xd
 	IPV6_MAXHLIM                      = 0xff
@@ -795,16 +876,22 @@
 	IP_DUMMYNET_DEL                   = 0x3d
 	IP_DUMMYNET_FLUSH                 = 0x3e
 	IP_DUMMYNET_GET                   = 0x40
-	IP_FAITH                          = 0x16
 	IP_FW_ADD                         = 0x32
 	IP_FW_DEL                         = 0x33
 	IP_FW_FLUSH                       = 0x34
 	IP_FW_GET                         = 0x36
 	IP_FW_RESETLOG                    = 0x37
+	IP_FW_TBL_ADD                     = 0x2a
+	IP_FW_TBL_CREATE                  = 0x28
+	IP_FW_TBL_DEL                     = 0x2b
+	IP_FW_TBL_DESTROY                 = 0x29
+	IP_FW_TBL_EXPIRE                  = 0x2f
+	IP_FW_TBL_FLUSH                   = 0x2c
+	IP_FW_TBL_GET                     = 0x2d
+	IP_FW_TBL_ZERO                    = 0x2e
 	IP_FW_X                           = 0x31
 	IP_FW_ZERO                        = 0x35
 	IP_HDRINCL                        = 0x2
-	IP_IPSEC_POLICY                   = 0x15
 	IP_MAXPACKET                      = 0xffff
 	IP_MAX_MEMBERSHIPS                = 0x14
 	IP_MF                             = 0x2000
@@ -1080,12 +1167,10 @@
 	RTM_MISS                          = 0x7
 	RTM_NEWADDR                       = 0xc
 	RTM_NEWMADDR                      = 0xf
-	RTM_OLDADD                        = 0x9
-	RTM_OLDDEL                        = 0xa
 	RTM_REDIRECT                      = 0x6
 	RTM_RESOLVE                       = 0xb
 	RTM_RTTUNIT                       = 0xf4240
-	RTM_VERSION                       = 0x6
+	RTM_VERSION                       = 0x7
 	RTV_EXPIRE                        = 0x4
 	RTV_HOPCOUNT                      = 0x2
 	RTV_IWCAPSEGS                     = 0x400
@@ -1106,13 +1191,13 @@
 	SHUT_RDWR                         = 0x2
 	SHUT_WR                           = 0x1
 	SIOCADDMULTI                      = 0x80206931
-	SIOCADDRT                         = 0x8040720a
 	SIOCAIFADDR                       = 0x8040691a
+	SIOCAIFGROUP                      = 0x80286987
 	SIOCALIFADDR                      = 0x8118691b
 	SIOCATMARK                        = 0x40047307
 	SIOCDELMULTI                      = 0x80206932
-	SIOCDELRT                         = 0x8040720b
 	SIOCDIFADDR                       = 0x80206919
+	SIOCDIFGROUP                      = 0x80286989
 	SIOCDIFPHYADDR                    = 0x80206949
 	SIOCDLIFADDR                      = 0x8118691d
 	SIOCGDRVSPEC                      = 0xc028697b
@@ -1120,6 +1205,7 @@
 	SIOCGETVIFCNT                     = 0xc028720f
 	SIOCGHIWAT                        = 0x40047301
 	SIOCGIFADDR                       = 0xc0206921
+	SIOCGIFALIAS                      = 0xc0406929
 	SIOCGIFBRDADDR                    = 0xc0206923
 	SIOCGIFCAP                        = 0xc020691f
 	SIOCGIFCONF                       = 0xc0106924
@@ -1128,6 +1214,7 @@
 	SIOCGIFFLAGS                      = 0xc0206911
 	SIOCGIFGENERIC                    = 0xc020693a
 	SIOCGIFGMEMB                      = 0xc028698a
+	SIOCGIFGROUP                      = 0xc0286988
 	SIOCGIFINDEX                      = 0xc0206920
 	SIOCGIFMEDIA                      = 0xc0306938
 	SIOCGIFMETRIC                     = 0xc0206917
@@ -1194,6 +1281,7 @@
 	SO_RCVBUF                         = 0x1002
 	SO_RCVLOWAT                       = 0x1004
 	SO_RCVTIMEO                       = 0x1006
+	SO_RERROR                         = 0x2000
 	SO_REUSEADDR                      = 0x4
 	SO_REUSEPORT                      = 0x200
 	SO_SNDBUF                         = 0x1001
@@ -1233,6 +1321,9 @@
 	S_IXGRP                           = 0x8
 	S_IXOTH                           = 0x1
 	S_IXUSR                           = 0x40
+	TAB0                              = 0x0
+	TAB3                              = 0x4
+	TABDLY                            = 0x4
 	TCIFLUSH                          = 0x1
 	TCIOFF                            = 0x3
 	TCIOFLUSH                         = 0x3
@@ -1259,6 +1350,8 @@
 	TCP_NOPUSH                        = 0x4
 	TCP_SIGNATURE_ENABLE              = 0x10
 	TCSAFLUSH                         = 0x2
+	TIMER_ABSTIME                     = 0x1
+	TIMER_RELTIME                     = 0x0
 	TIOCCBRK                          = 0x2000747a
 	TIOCCDTR                          = 0x20007478
 	TIOCCONS                          = 0x80047462
@@ -1272,7 +1365,6 @@
 	TIOCGETD                          = 0x4004741a
 	TIOCGPGRP                         = 0x40047477
 	TIOCGSID                          = 0x40047463
-	TIOCGSIZE                         = 0x40087468
 	TIOCGWINSZ                        = 0x40087468
 	TIOCISPTMASTER                    = 0x20007455
 	TIOCMBIC                          = 0x8004746b
@@ -1317,7 +1409,6 @@
 	TIOCSETD                          = 0x8004741b
 	TIOCSIG                           = 0x2000745f
 	TIOCSPGRP                         = 0x80047476
-	TIOCSSIZE                         = 0x80087467
 	TIOCSTART                         = 0x2000746e
 	TIOCSTAT                          = 0x20007465
 	TIOCSTI                           = 0x80017472
@@ -1326,6 +1417,8 @@
 	TIOCTIMESTAMP                     = 0x40107459
 	TIOCUCNTL                         = 0x80047466
 	TOSTOP                            = 0x400000
+	UTIME_NOW                         = -0x1
+	UTIME_OMIT                        = -0x2
 	VCHECKPT                          = 0x13
 	VDISCARD                          = 0xf
 	VDSUSP                            = 0xb
@@ -1350,9 +1443,12 @@
 	VWERASE                           = 0x4
 	WCONTINUED                        = 0x4
 	WCOREFLAG                         = 0x80
+	WEXITED                           = 0x10
 	WLINUXCLONE                       = 0x80000000
 	WNOHANG                           = 0x1
-	WSTOPPED                          = 0x7f
+	WNOWAIT                           = 0x8
+	WSTOPPED                          = 0x2
+	WTRAPPED                          = 0x20
 	WUNTRACED                         = 0x2
 )
 
@@ -1452,11 +1548,6 @@
 	ETIMEDOUT       = syscall.Errno(0x3c)
 	ETOOMANYREFS    = syscall.Errno(0x3b)
 	ETXTBSY         = syscall.Errno(0x1a)
-	EUNUSED94       = syscall.Errno(0x5e)
-	EUNUSED95       = syscall.Errno(0x5f)
-	EUNUSED96       = syscall.Errno(0x60)
-	EUNUSED97       = syscall.Errno(0x61)
-	EUNUSED98       = syscall.Errno(0x62)
 	EUSERS          = syscall.Errno(0x44)
 	EWOULDBLOCK     = syscall.Errno(0x23)
 	EXDEV           = syscall.Errno(0x12)
@@ -1600,12 +1691,7 @@
 	{91, "ENOLINK", "link has been severed"},
 	{92, "EPROTO", "protocol error"},
 	{93, "ENOMEDIUM", "no medium found"},
-	{94, "EUNUSED94", "unknown error: 94"},
-	{95, "EUNUSED95", "unknown error: 95"},
-	{96, "EUNUSED96", "unknown error: 96"},
-	{97, "EUNUSED97", "unknown error: 97"},
-	{98, "EUNUSED98", "unknown error: 98"},
-	{99, "ELAST", "unknown error: 99"},
+	{99, "EASYNC", "unknown error: 99"},
 }
 
 // Signal table
diff --git a/unix/zsyscall_dragonfly_amd64.go b/unix/zsyscall_dragonfly_amd64.go
index fe1fdd7..aebfe51 100644
--- a/unix/zsyscall_dragonfly_amd64.go
+++ b/unix/zsyscall_dragonfly_amd64.go
@@ -214,22 +214,6 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) {
-	var _p0 unsafe.Pointer
-	if len(mib) > 0 {
-		_p0 = unsafe.Pointer(&mib[0])
-	} else {
-		_p0 = unsafe.Pointer(&_zero)
-	}
-	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	if e1 != 0 {
-		err = errnoErr(e1)
-	}
-	return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func utimes(path string, timeval *[2]Timeval) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)
@@ -439,6 +423,22 @@
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) {
+	var _p0 unsafe.Pointer
+	if len(mib) > 0 {
+		_p0 = unsafe.Pointer(&mib[0])
+	} else {
+		_p0 = unsafe.Pointer(&_zero)
+	}
+	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func Access(path string, mode uint32) (err error) {
 	var _p0 *byte
 	_p0, err = BytePtrFromString(path)
diff --git a/unix/zsysnum_dragonfly_amd64.go b/unix/zsysnum_dragonfly_amd64.go
index 464c9a9..9912c6e 100644
--- a/unix/zsysnum_dragonfly_amd64.go
+++ b/unix/zsysnum_dragonfly_amd64.go
@@ -6,129 +6,125 @@
 package unix
 
 const (
-	// SYS_NOSYS = 0;  // { int nosys(void); } syscall nosys_args int
-	SYS_EXIT          = 1   // { void exit(int rval); }
-	SYS_FORK          = 2   // { int fork(void); }
-	SYS_READ          = 3   // { ssize_t read(int fd, void *buf, size_t nbyte); }
-	SYS_WRITE         = 4   // { ssize_t write(int fd, const void *buf, size_t nbyte); }
-	SYS_OPEN          = 5   // { int open(char *path, int flags, int mode); }
-	SYS_CLOSE         = 6   // { int close(int fd); }
-	SYS_WAIT4         = 7   // { int wait4(int pid, int *status, int options, struct rusage *rusage); } wait4 wait_args int
-	SYS_LINK          = 9   // { int link(char *path, char *link); }
-	SYS_UNLINK        = 10  // { int unlink(char *path); }
-	SYS_CHDIR         = 12  // { int chdir(char *path); }
-	SYS_FCHDIR        = 13  // { int fchdir(int fd); }
-	SYS_MKNOD         = 14  // { int mknod(char *path, int mode, int dev); }
-	SYS_CHMOD         = 15  // { int chmod(char *path, int mode); }
-	SYS_CHOWN         = 16  // { int chown(char *path, int uid, int gid); }
-	SYS_OBREAK        = 17  // { int obreak(char *nsize); } break obreak_args int
-	SYS_GETFSSTAT     = 18  // { int getfsstat(struct statfs *buf, long bufsize, int flags); }
-	SYS_GETPID        = 20  // { pid_t getpid(void); }
-	SYS_MOUNT         = 21  // { int mount(char *type, char *path, int flags, caddr_t data); }
-	SYS_UNMOUNT       = 22  // { int unmount(char *path, int flags); }
-	SYS_SETUID        = 23  // { int setuid(uid_t uid); }
-	SYS_GETUID        = 24  // { uid_t getuid(void); }
-	SYS_GETEUID       = 25  // { uid_t geteuid(void); }
-	SYS_PTRACE        = 26  // { int ptrace(int req, pid_t pid, caddr_t addr, int data); }
-	SYS_RECVMSG       = 27  // { int recvmsg(int s, struct msghdr *msg, int flags); }
-	SYS_SENDMSG       = 28  // { int sendmsg(int s, caddr_t msg, int flags); }
-	SYS_RECVFROM      = 29  // { int recvfrom(int s, caddr_t buf, size_t len, int flags, caddr_t from, int *fromlenaddr); }
-	SYS_ACCEPT        = 30  // { int accept(int s, caddr_t name, int *anamelen); }
-	SYS_GETPEERNAME   = 31  // { int getpeername(int fdes, caddr_t asa, int *alen); }
-	SYS_GETSOCKNAME   = 32  // { int getsockname(int fdes, caddr_t asa, int *alen); }
-	SYS_ACCESS        = 33  // { int access(char *path, int flags); }
-	SYS_CHFLAGS       = 34  // { int chflags(char *path, int flags); }
-	SYS_FCHFLAGS      = 35  // { int fchflags(int fd, int flags); }
-	SYS_SYNC          = 36  // { int sync(void); }
-	SYS_KILL          = 37  // { int kill(int pid, int signum); }
-	SYS_GETPPID       = 39  // { pid_t getppid(void); }
-	SYS_DUP           = 41  // { int dup(int fd); }
-	SYS_PIPE          = 42  // { int pipe(void); }
-	SYS_GETEGID       = 43  // { gid_t getegid(void); }
-	SYS_PROFIL        = 44  // { int profil(caddr_t samples, size_t size, size_t offset, u_int scale); }
-	SYS_KTRACE        = 45  // { int ktrace(const char *fname, int ops, int facs, int pid); }
-	SYS_GETGID        = 47  // { gid_t getgid(void); }
-	SYS_GETLOGIN      = 49  // { int getlogin(char *namebuf, u_int namelen); }
-	SYS_SETLOGIN      = 50  // { int setlogin(char *namebuf); }
-	SYS_ACCT          = 51  // { int acct(char *path); }
-	SYS_SIGALTSTACK   = 53  // { int sigaltstack(stack_t *ss, stack_t *oss); }
-	SYS_IOCTL         = 54  // { int ioctl(int fd, u_long com, caddr_t data); }
-	SYS_REBOOT        = 55  // { int reboot(int opt); }
-	SYS_REVOKE        = 56  // { int revoke(char *path); }
-	SYS_SYMLINK       = 57  // { int symlink(char *path, char *link); }
-	SYS_READLINK      = 58  // { int readlink(char *path, char *buf, int count); }
-	SYS_EXECVE        = 59  // { int execve(char *fname, char **argv, char **envv); }
-	SYS_UMASK         = 60  // { int umask(int newmask); } umask umask_args int
-	SYS_CHROOT        = 61  // { int chroot(char *path); }
-	SYS_MSYNC         = 65  // { int msync(void *addr, size_t len, int flags); }
-	SYS_VFORK         = 66  // { pid_t vfork(void); }
-	SYS_SBRK          = 69  // { int sbrk(int incr); }
-	SYS_SSTK          = 70  // { int sstk(int incr); }
-	SYS_MUNMAP        = 73  // { int munmap(void *addr, size_t len); }
-	SYS_MPROTECT      = 74  // { int mprotect(void *addr, size_t len, int prot); }
-	SYS_MADVISE       = 75  // { int madvise(void *addr, size_t len, int behav); }
-	SYS_MINCORE       = 78  // { int mincore(const void *addr, size_t len, char *vec); }
-	SYS_GETGROUPS     = 79  // { int getgroups(u_int gidsetsize, gid_t *gidset); }
-	SYS_SETGROUPS     = 80  // { int setgroups(u_int gidsetsize, gid_t *gidset); }
-	SYS_GETPGRP       = 81  // { int getpgrp(void); }
-	SYS_SETPGID       = 82  // { int setpgid(int pid, int pgid); }
-	SYS_SETITIMER     = 83  // { int setitimer(u_int which, struct itimerval *itv, struct itimerval *oitv); }
-	SYS_SWAPON        = 85  // { int swapon(char *name); }
-	SYS_GETITIMER     = 86  // { int getitimer(u_int which, struct itimerval *itv); }
-	SYS_GETDTABLESIZE = 89  // { int getdtablesize(void); }
-	SYS_DUP2          = 90  // { int dup2(int from, int to); }
-	SYS_FCNTL         = 92  // { int fcntl(int fd, int cmd, long arg); }
-	SYS_SELECT        = 93  // { int select(int nd, fd_set *in, fd_set *ou, fd_set *ex, struct timeval *tv); }
-	SYS_FSYNC         = 95  // { int fsync(int fd); }
-	SYS_SETPRIORITY   = 96  // { int setpriority(int which, int who, int prio); }
-	SYS_SOCKET        = 97  // { int socket(int domain, int type, int protocol); }
-	SYS_CONNECT       = 98  // { int connect(int s, caddr_t name, int namelen); }
-	SYS_GETPRIORITY   = 100 // { int getpriority(int which, int who); }
-	SYS_BIND          = 104 // { int bind(int s, caddr_t name, int namelen); }
-	SYS_SETSOCKOPT    = 105 // { int setsockopt(int s, int level, int name, caddr_t val, int valsize); }
-	SYS_LISTEN        = 106 // { int listen(int s, int backlog); }
-	SYS_GETTIMEOFDAY  = 116 // { int gettimeofday(struct timeval *tp, struct timezone *tzp); }
-	SYS_GETRUSAGE     = 117 // { int getrusage(int who, struct rusage *rusage); }
-	SYS_GETSOCKOPT    = 118 // { int getsockopt(int s, int level, int name, caddr_t val, int *avalsize); }
-	SYS_READV         = 120 // { int readv(int fd, struct iovec *iovp, u_int iovcnt); }
-	SYS_WRITEV        = 121 // { int writev(int fd, struct iovec *iovp, u_int iovcnt); }
-	SYS_SETTIMEOFDAY  = 122 // { int settimeofday(struct timeval *tv, struct timezone *tzp); }
-	SYS_FCHOWN        = 123 // { int fchown(int fd, int uid, int gid); }
-	SYS_FCHMOD        = 124 // { int fchmod(int fd, int mode); }
-	SYS_SETREUID      = 126 // { int setreuid(int ruid, int euid); }
-	SYS_SETREGID      = 127 // { int setregid(int rgid, int egid); }
-	SYS_RENAME        = 128 // { int rename(char *from, char *to); }
-	SYS_FLOCK         = 131 // { int flock(int fd, int how); }
-	SYS_MKFIFO        = 132 // { int mkfifo(char *path, int mode); }
-	SYS_SENDTO        = 133 // { int sendto(int s, caddr_t buf, size_t len, int flags, caddr_t to, int tolen); }
-	SYS_SHUTDOWN      = 134 // { int shutdown(int s, int how); }
-	SYS_SOCKETPAIR    = 135 // { int socketpair(int domain, int type, int protocol, int *rsv); }
-	SYS_MKDIR         = 136 // { int mkdir(char *path, int mode); }
-	SYS_RMDIR         = 137 // { int rmdir(char *path); }
-	SYS_UTIMES        = 138 // { int utimes(char *path, struct timeval *tptr); }
-	SYS_ADJTIME       = 140 // { int adjtime(struct timeval *delta, struct timeval *olddelta); }
-	SYS_SETSID        = 147 // { int setsid(void); }
-	SYS_QUOTACTL      = 148 // { int quotactl(char *path, int cmd, int uid, caddr_t arg); }
-	SYS_STATFS        = 157 // { int statfs(char *path, struct statfs *buf); }
-	SYS_FSTATFS       = 158 // { int fstatfs(int fd, struct statfs *buf); }
-	SYS_GETFH         = 161 // { int getfh(char *fname, struct fhandle *fhp); }
-	SYS_GETDOMAINNAME = 162 // { int getdomainname(char *domainname, int len); }
-	SYS_SETDOMAINNAME = 163 // { int setdomainname(char *domainname, int len); }
-	SYS_UNAME         = 164 // { int uname(struct utsname *name); }
-	SYS_SYSARCH       = 165 // { int sysarch(int op, char *parms); }
-	SYS_RTPRIO        = 166 // { int rtprio(int function, pid_t pid, struct rtprio *rtp); }
-	SYS_EXTPREAD      = 173 // { ssize_t extpread(int fd, void *buf, size_t nbyte, int flags, off_t offset); }
-	SYS_EXTPWRITE     = 174 // { ssize_t extpwrite(int fd, const void *buf, size_t nbyte, int flags, off_t offset); }
-	SYS_NTP_ADJTIME   = 176 // { int ntp_adjtime(struct timex *tp); }
-	SYS_SETGID        = 181 // { int setgid(gid_t gid); }
-	SYS_SETEGID       = 182 // { int setegid(gid_t egid); }
-	SYS_SETEUID       = 183 // { int seteuid(uid_t euid); }
-	SYS_PATHCONF      = 191 // { int pathconf(char *path, int name); }
-	SYS_FPATHCONF     = 192 // { int fpathconf(int fd, int name); }
-	SYS_GETRLIMIT     = 194 // { int getrlimit(u_int which, struct rlimit *rlp); } getrlimit __getrlimit_args int
-	SYS_SETRLIMIT     = 195 // { int setrlimit(u_int which, struct rlimit *rlp); } setrlimit __setrlimit_args int
-	SYS_MMAP          = 197 // { caddr_t mmap(caddr_t addr, size_t len, int prot, int flags, int fd, int pad, off_t pos); }
-	// SYS_NOSYS = 198;  // { int nosys(void); } __syscall __syscall_args int
+	SYS_EXIT  = 1 // { void exit(int rval); }
+	SYS_FORK  = 2 // { int fork(void); }
+	SYS_READ  = 3 // { ssize_t read(int fd, void *buf, size_t nbyte); }
+	SYS_WRITE = 4 // { ssize_t write(int fd, const void *buf, size_t nbyte); }
+	SYS_OPEN  = 5 // { int open(char *path, int flags, int mode); }
+	SYS_CLOSE = 6 // { int close(int fd); }
+	SYS_WAIT4 = 7 // { int wait4(int pid, int *status, int options, struct rusage *rusage); } wait4 wait_args int
+	// SYS_NOSYS = 8;  // { int nosys(void); } __nosys nosys_args int
+	SYS_LINK                   = 9   // { int link(char *path, char *link); }
+	SYS_UNLINK                 = 10  // { int unlink(char *path); }
+	SYS_CHDIR                  = 12  // { int chdir(char *path); }
+	SYS_FCHDIR                 = 13  // { int fchdir(int fd); }
+	SYS_MKNOD                  = 14  // { int mknod(char *path, int mode, int dev); }
+	SYS_CHMOD                  = 15  // { int chmod(char *path, int mode); }
+	SYS_CHOWN                  = 16  // { int chown(char *path, int uid, int gid); }
+	SYS_OBREAK                 = 17  // { int obreak(char *nsize); } break obreak_args int
+	SYS_GETFSSTAT              = 18  // { int getfsstat(struct statfs *buf, long bufsize, int flags); }
+	SYS_GETPID                 = 20  // { pid_t getpid(void); }
+	SYS_MOUNT                  = 21  // { int mount(char *type, char *path, int flags, caddr_t data); }
+	SYS_UNMOUNT                = 22  // { int unmount(char *path, int flags); }
+	SYS_SETUID                 = 23  // { int setuid(uid_t uid); }
+	SYS_GETUID                 = 24  // { uid_t getuid(void); }
+	SYS_GETEUID                = 25  // { uid_t geteuid(void); }
+	SYS_PTRACE                 = 26  // { int ptrace(int req, pid_t pid, caddr_t addr, int data); }
+	SYS_RECVMSG                = 27  // { int recvmsg(int s, struct msghdr *msg, int flags); }
+	SYS_SENDMSG                = 28  // { int sendmsg(int s, caddr_t msg, int flags); }
+	SYS_RECVFROM               = 29  // { int recvfrom(int s, caddr_t buf, size_t len, int flags, caddr_t from, int *fromlenaddr); }
+	SYS_ACCEPT                 = 30  // { int accept(int s, caddr_t name, int *anamelen); }
+	SYS_GETPEERNAME            = 31  // { int getpeername(int fdes, caddr_t asa, int *alen); }
+	SYS_GETSOCKNAME            = 32  // { int getsockname(int fdes, caddr_t asa, int *alen); }
+	SYS_ACCESS                 = 33  // { int access(char *path, int flags); }
+	SYS_CHFLAGS                = 34  // { int chflags(const char *path, u_long flags); }
+	SYS_FCHFLAGS               = 35  // { int fchflags(int fd, u_long flags); }
+	SYS_SYNC                   = 36  // { int sync(void); }
+	SYS_KILL                   = 37  // { int kill(int pid, int signum); }
+	SYS_GETPPID                = 39  // { pid_t getppid(void); }
+	SYS_DUP                    = 41  // { int dup(int fd); }
+	SYS_PIPE                   = 42  // { int pipe(void); }
+	SYS_GETEGID                = 43  // { gid_t getegid(void); }
+	SYS_PROFIL                 = 44  // { int profil(caddr_t samples, size_t size, u_long offset, u_int scale); }
+	SYS_KTRACE                 = 45  // { int ktrace(const char *fname, int ops, int facs, int pid); }
+	SYS_GETGID                 = 47  // { gid_t getgid(void); }
+	SYS_GETLOGIN               = 49  // { int getlogin(char *namebuf, size_t namelen); }
+	SYS_SETLOGIN               = 50  // { int setlogin(char *namebuf); }
+	SYS_ACCT                   = 51  // { int acct(char *path); }
+	SYS_SIGALTSTACK            = 53  // { int sigaltstack(stack_t *ss, stack_t *oss); }
+	SYS_IOCTL                  = 54  // { int ioctl(int fd, u_long com, caddr_t data); }
+	SYS_REBOOT                 = 55  // { int reboot(int opt); }
+	SYS_REVOKE                 = 56  // { int revoke(char *path); }
+	SYS_SYMLINK                = 57  // { int symlink(char *path, char *link); }
+	SYS_READLINK               = 58  // { int readlink(char *path, char *buf, int count); }
+	SYS_EXECVE                 = 59  // { int execve(char *fname, char **argv, char **envv); }
+	SYS_UMASK                  = 60  // { int umask(int newmask); } umask umask_args int
+	SYS_CHROOT                 = 61  // { int chroot(char *path); }
+	SYS_MSYNC                  = 65  // { int msync(void *addr, size_t len, int flags); }
+	SYS_VFORK                  = 66  // { pid_t vfork(void); }
+	SYS_SBRK                   = 69  // { caddr_t sbrk(size_t incr); }
+	SYS_SSTK                   = 70  // { int sstk(size_t incr); }
+	SYS_MUNMAP                 = 73  // { int munmap(void *addr, size_t len); }
+	SYS_MPROTECT               = 74  // { int mprotect(void *addr, size_t len, int prot); }
+	SYS_MADVISE                = 75  // { int madvise(void *addr, size_t len, int behav); }
+	SYS_MINCORE                = 78  // { int mincore(const void *addr, size_t len, char *vec); }
+	SYS_GETGROUPS              = 79  // { int getgroups(u_int gidsetsize, gid_t *gidset); }
+	SYS_SETGROUPS              = 80  // { int setgroups(u_int gidsetsize, gid_t *gidset); }
+	SYS_GETPGRP                = 81  // { int getpgrp(void); }
+	SYS_SETPGID                = 82  // { int setpgid(int pid, int pgid); }
+	SYS_SETITIMER              = 83  // { int setitimer(u_int which, struct itimerval *itv, struct itimerval *oitv); }
+	SYS_SWAPON                 = 85  // { int swapon(char *name); }
+	SYS_GETITIMER              = 86  // { int getitimer(u_int which, struct itimerval *itv); }
+	SYS_GETDTABLESIZE          = 89  // { int getdtablesize(void); }
+	SYS_DUP2                   = 90  // { int dup2(int from, int to); }
+	SYS_FCNTL                  = 92  // { int fcntl(int fd, int cmd, long arg); }
+	SYS_SELECT                 = 93  // { int select(int nd, fd_set *in, fd_set *ou, fd_set *ex, struct timeval *tv); }
+	SYS_FSYNC                  = 95  // { int fsync(int fd); }
+	SYS_SETPRIORITY            = 96  // { int setpriority(int which, int who, int prio); }
+	SYS_SOCKET                 = 97  // { int socket(int domain, int type, int protocol); }
+	SYS_CONNECT                = 98  // { int connect(int s, caddr_t name, int namelen); }
+	SYS_GETPRIORITY            = 100 // { int getpriority(int which, int who); }
+	SYS_BIND                   = 104 // { int bind(int s, caddr_t name, int namelen); }
+	SYS_SETSOCKOPT             = 105 // { int setsockopt(int s, int level, int name, caddr_t val, int valsize); }
+	SYS_LISTEN                 = 106 // { int listen(int s, int backlog); }
+	SYS_GETTIMEOFDAY           = 116 // { int gettimeofday(struct timeval *tp, struct timezone *tzp); }
+	SYS_GETRUSAGE              = 117 // { int getrusage(int who, struct rusage *rusage); }
+	SYS_GETSOCKOPT             = 118 // { int getsockopt(int s, int level, int name, caddr_t val, int *avalsize); }
+	SYS_READV                  = 120 // { int readv(int fd, struct iovec *iovp, u_int iovcnt); }
+	SYS_WRITEV                 = 121 // { int writev(int fd, struct iovec *iovp, u_int iovcnt); }
+	SYS_SETTIMEOFDAY           = 122 // { int settimeofday(struct timeval *tv, struct timezone *tzp); }
+	SYS_FCHOWN                 = 123 // { int fchown(int fd, int uid, int gid); }
+	SYS_FCHMOD                 = 124 // { int fchmod(int fd, int mode); }
+	SYS_SETREUID               = 126 // { int setreuid(int ruid, int euid); }
+	SYS_SETREGID               = 127 // { int setregid(int rgid, int egid); }
+	SYS_RENAME                 = 128 // { int rename(char *from, char *to); }
+	SYS_FLOCK                  = 131 // { int flock(int fd, int how); }
+	SYS_MKFIFO                 = 132 // { int mkfifo(char *path, int mode); }
+	SYS_SENDTO                 = 133 // { int sendto(int s, caddr_t buf, size_t len, int flags, caddr_t to, int tolen); }
+	SYS_SHUTDOWN               = 134 // { int shutdown(int s, int how); }
+	SYS_SOCKETPAIR             = 135 // { int socketpair(int domain, int type, int protocol, int *rsv); }
+	SYS_MKDIR                  = 136 // { int mkdir(char *path, int mode); }
+	SYS_RMDIR                  = 137 // { int rmdir(char *path); }
+	SYS_UTIMES                 = 138 // { int utimes(char *path, struct timeval *tptr); }
+	SYS_ADJTIME                = 140 // { int adjtime(struct timeval *delta, struct timeval *olddelta); }
+	SYS_SETSID                 = 147 // { int setsid(void); }
+	SYS_QUOTACTL               = 148 // { int quotactl(char *path, int cmd, int uid, caddr_t arg); }
+	SYS_STATFS                 = 157 // { int statfs(char *path, struct statfs *buf); }
+	SYS_FSTATFS                = 158 // { int fstatfs(int fd, struct statfs *buf); }
+	SYS_GETFH                  = 161 // { int getfh(char *fname, struct fhandle *fhp); }
+	SYS_SYSARCH                = 165 // { int sysarch(int op, char *parms); }
+	SYS_RTPRIO                 = 166 // { int rtprio(int function, pid_t pid, struct rtprio *rtp); }
+	SYS_EXTPREAD               = 173 // { ssize_t extpread(int fd, void *buf, size_t nbyte, int flags, off_t offset); }
+	SYS_EXTPWRITE              = 174 // { ssize_t extpwrite(int fd, const void *buf, size_t nbyte, int flags, off_t offset); }
+	SYS_NTP_ADJTIME            = 176 // { int ntp_adjtime(struct timex *tp); }
+	SYS_SETGID                 = 181 // { int setgid(gid_t gid); }
+	SYS_SETEGID                = 182 // { int setegid(gid_t egid); }
+	SYS_SETEUID                = 183 // { int seteuid(uid_t euid); }
+	SYS_PATHCONF               = 191 // { int pathconf(char *path, int name); }
+	SYS_FPATHCONF              = 192 // { int fpathconf(int fd, int name); }
+	SYS_GETRLIMIT              = 194 // { int getrlimit(u_int which, struct rlimit *rlp); } getrlimit __getrlimit_args int
+	SYS_SETRLIMIT              = 195 // { int setrlimit(u_int which, struct rlimit *rlp); } setrlimit __setrlimit_args int
+	SYS_MMAP                   = 197 // { caddr_t mmap(caddr_t addr, size_t len, int prot, int flags, int fd, int pad, off_t pos); }
 	SYS_LSEEK                  = 199 // { off_t lseek(int fd, int pad, off_t offset, int whence); }
 	SYS_TRUNCATE               = 200 // { int truncate(char *path, int pad, off_t length); }
 	SYS_FTRUNCATE              = 201 // { int ftruncate(int fd, int pad, off_t length); }
@@ -161,8 +157,8 @@
 	SYS_LCHOWN                 = 254 // { int lchown(char *path, int uid, int gid); }
 	SYS_LCHMOD                 = 274 // { int lchmod(char *path, mode_t mode); }
 	SYS_LUTIMES                = 276 // { int lutimes(char *path, struct timeval *tptr); }
-	SYS_EXTPREADV              = 289 // { ssize_t extpreadv(int fd, struct iovec *iovp, u_int iovcnt, int flags, off_t offset); }
-	SYS_EXTPWRITEV             = 290 // { ssize_t extpwritev(int fd, struct iovec *iovp,u_int iovcnt, int flags, off_t offset); }
+	SYS_EXTPREADV              = 289 // { ssize_t extpreadv(int fd, const struct iovec *iovp, int iovcnt, int flags, off_t offset); }
+	SYS_EXTPWRITEV             = 290 // { ssize_t extpwritev(int fd, const struct iovec *iovp, int iovcnt, int flags, off_t offset); }
 	SYS_FHSTATFS               = 297 // { int fhstatfs(const struct fhandle *u_fhp, struct statfs *buf); }
 	SYS_FHOPEN                 = 298 // { int fhopen(const struct fhandle *u_fhp, int flags); }
 	SYS_MODNEXT                = 300 // { int modnext(int modid); }
@@ -225,7 +221,7 @@
 	SYS_KQUEUE                 = 362 // { int kqueue(void); }
 	SYS_KEVENT                 = 363 // { int kevent(int fd, const struct kevent *changelist, int nchanges, struct kevent *eventlist, int nevents, const struct timespec *timeout); }
 	SYS_KENV                   = 390 // { int kenv(int what, const char *name, char *value, int len); }
-	SYS_LCHFLAGS               = 391 // { int lchflags(char *path, int flags); }
+	SYS_LCHFLAGS               = 391 // { int lchflags(const char *path, u_long flags); }
 	SYS_UUIDGEN                = 392 // { int uuidgen(struct uuid *store, int count); }
 	SYS_SENDFILE               = 393 // { int sendfile(int fd, int s, off_t offset, size_t nbytes, struct sf_hdtr *hdtr, off_t *sbytes, int flags); }
 	SYS_VARSYM_SET             = 450 // { int varsym_set(int level, const char *name, const char *data); }
@@ -302,7 +298,7 @@
 	SYS_VMM_GUEST_CTL          = 534 // { int vmm_guest_ctl(int op, struct vmm_guest_options *options); }
 	SYS_VMM_GUEST_SYNC_ADDR    = 535 // { int vmm_guest_sync_addr(long *dstaddr, long *srcaddr); }
 	SYS_PROCCTL                = 536 // { int procctl(idtype_t idtype, id_t id, int cmd, void *data); }
-	SYS_CHFLAGSAT              = 537 // { int chflagsat(int fd, const char *path, int flags, int atflags);}
+	SYS_CHFLAGSAT              = 537 // { int chflagsat(int fd, const char *path, u_long flags, int atflags);}
 	SYS_PIPE2                  = 538 // { int pipe2(int *fildes, int flags); }
 	SYS_UTIMENSAT              = 539 // { int utimensat(int fd, const char *path, const struct timespec *ts, int flags); }
 	SYS_FUTIMENS               = 540 // { int futimens(int fd, const struct timespec *ts); }
@@ -312,4 +308,9 @@
 	SYS_LWP_SETAFFINITY        = 544 // { int lwp_setaffinity(pid_t pid, lwpid_t tid, const cpumask_t *mask); }
 	SYS_LWP_GETAFFINITY        = 545 // { int lwp_getaffinity(pid_t pid, lwpid_t tid, cpumask_t *mask); }
 	SYS_LWP_CREATE2            = 546 // { int lwp_create2(struct lwp_params *params, const cpumask_t *mask); }
+	SYS_GETCPUCLOCKID          = 547 // { int getcpuclockid(pid_t pid, lwpid_t lwp_id, clockid_t *clock_id); }
+	SYS_WAIT6                  = 548 // { int wait6(idtype_t idtype, id_t id, int *status, int options, struct __wrusage *wrusage, siginfo_t *info); }
+	SYS_LWP_GETNAME            = 549 // { int lwp_getname(lwpid_t tid, char *name, size_t len); }
+	SYS_GETRANDOM              = 550 // { ssize_t getrandom(void *buf, size_t len, unsigned flags); }
+	SYS___REALPATH             = 551 // { ssize_t __realpath(const char *path, char *buf, size_t len); }
 )
diff --git a/unix/ztypes_dragonfly_amd64.go b/unix/ztypes_dragonfly_amd64.go
index 71ea1d6..c4772df 100644
--- a/unix/ztypes_dragonfly_amd64.go
+++ b/unix/ztypes_dragonfly_amd64.go
@@ -70,11 +70,11 @@
 	Ctim    Timespec
 	Size    int64
 	Blocks  int64
-	Blksize uint32
+	_       uint32
 	Flags   uint32
 	Gen     uint32
 	Lspare  int32
-	Qspare1 int64
+	Blksize int64
 	Qspare2 int64
 }
 
@@ -91,17 +91,15 @@
 	Owner       uint32
 	Type        int32
 	Flags       int32
-	_           [4]byte
 	Syncwrites  int64
 	Asyncwrites int64
-	Fstypename  [16]int8
-	Mntonname   [80]int8
+	Fstypename  [16]byte
+	Mntonname   [80]byte
 	Syncreads   int64
 	Asyncreads  int64
 	Spares1     int16
-	Mntfromname [80]int8
+	Mntfromname [80]byte
 	Spares2     int16
-	_           [4]byte
 	Spare       [2]int64
 }
 
@@ -202,10 +200,8 @@
 type Msghdr struct {
 	Name       *byte
 	Namelen    uint32
-	_          [4]byte
 	Iov        *Iovec
 	Iovlen     int32
-	_          [4]byte
 	Control    *byte
 	Controllen uint32
 	Flags      int32
@@ -269,7 +265,7 @@
 const (
 	SizeofIfMsghdr         = 0xb0
 	SizeofIfData           = 0xa0
-	SizeofIfaMsghdr        = 0x14
+	SizeofIfaMsghdr        = 0x18
 	SizeofIfmaMsghdr       = 0x10
 	SizeofIfAnnounceMsghdr = 0x18
 	SizeofRtMsghdr         = 0x98
@@ -280,10 +276,9 @@
 	Msglen  uint16
 	Version uint8
 	Type    uint8
-	Addrs   int32
-	Flags   int32
 	Index   uint16
-	_       [2]byte
+	Flags   int32
+	Addrs   int32
 	Data    IfData
 }
 
@@ -294,7 +289,6 @@
 	Hdrlen     uint8
 	Recvquota  uint8
 	Xmitquota  uint8
-	_          [2]byte
 	Mtu        uint64
 	Metric     uint64
 	Link_state uint64
@@ -316,24 +310,23 @@
 }
 
 type IfaMsghdr struct {
-	Msglen  uint16
-	Version uint8
-	Type    uint8
-	Addrs   int32
-	Flags   int32
-	Index   uint16
-	_       [2]byte
-	Metric  int32
+	Msglen    uint16
+	Version   uint8
+	Type      uint8
+	Index     uint16
+	Flags     int32
+	Addrs     int32
+	Addrflags int32
+	Metric    int32
 }
 
 type IfmaMsghdr struct {
 	Msglen  uint16
 	Version uint8
 	Type    uint8
-	Addrs   int32
-	Flags   int32
 	Index   uint16
-	_       [2]byte
+	Flags   int32
+	Addrs   int32
 }
 
 type IfAnnounceMsghdr struct {
@@ -350,7 +343,6 @@
 	Version uint8
 	Type    uint8
 	Index   uint16
-	_       [2]byte
 	Flags   int32
 	Addrs   int32
 	Pid     int32
@@ -374,7 +366,6 @@
 	Hopcount  uint64
 	Mssopt    uint16
 	Pad       uint16
-	_         [4]byte
 	Msl       uint64
 	Iwmaxsegs uint64
 	Iwcapsegs uint64
@@ -400,7 +391,6 @@
 
 type BpfProgram struct {
 	Len   uint32
-	_     [4]byte
 	Insns *BpfInsn
 }